APTRANSCO Assistant Engineer Telecom Model Paper

1.For reciprocal network, ABCD parameters are related as
(A ) A = D      (B)  B = C   (C) AD – BC = 1    (D) AD + BC = 1
2. For a short circuited transmission line, reflection coefficient is equal to
(A) zero       (B) infinity       (C) –1        (D) +1
3. An analog signal is band-limited to 4kHz, sampled at the Nyquist rate and the samples are quantized into 4 levels. The quantized levels are assumed to be independent and equally probable. If we transmit two quantized samples per second, the information rate is ________ bits / second.
(A)1        (B) 2        (C) 3         (D) 4
Explanation:: Since two samples are transmitted and each sample has 2 bits of information,  then the information rate is 4 bits/sec.
4. The root locus plot for a system is given below. The open loop transfer function corresponding to this plot is given by

Answer::  (B)
Explanation:: ‘ x ‘ →  indicates pole
‘ O’ →  indicates zero  The point on the root locus when the number of poles and zeroes on the real axis
to the right side of that point must be odd
5. A system is defined by its impulse response  The system is 
  (A) stable and causal                 (B) causal but not stable                (C) stable but not causal             (D) unstable and non-causal
Explanation::
h(n)  is existing for n>2 ; so that h(n)=0;n<0 ⇒  causal

6. A digital-to-analog converter with a full-scale output voltage of 3.5 V has a resolution close to 14m V. Its bit size is
A) 4             B) 8            C) 16                D) 32
7. The output Y in the circuit below is always ‘1’  when

(A) two or more of the inputs P,Q,R are ‘0’
(B) two or more of the inputs P,Q,R are ‘1’
(C) any odd number of the inputs P,Q,R is ‘0’
(D) any odd number of the inputs P,Q,R is ‘1’ 
Explanation:: The output Y expression in the Ckt is Y= PQ +PR+ RQ   So that two or more inputs are ‘1’, Y is always ‘1’.
8.  For the function f(x) = x²e^-x , the maximum occurs when x is equal to
A) 2              B) 1            C) 0               D) -1 Correct
9. Drift current in the semiconductors depends upon  
(A) only the electric field    (B) only the carrier concentration gradient   (C) both the electric field and the carrier concentration  (D) both the electric field and the carrier concentration gradient 
Explanation :: Drift current, J E= σ
J= (nu_n + pu_p)qE   So that it depends on carrier concentration and electric field.
10. A Zener diode, when used in voltage stabilization circuits, is biased in 
(A) reverse bias region below the breakdown voltage
(B) reverse breakdown region 
(C) forward bias region 
(D) forward bias constant current mode
11.  The modes in a rectangular waveguide are denoted by TE_mn/TM_mn where m and n are the eigen numbers along the larger and smaller dimensions of the waveguide respectively. Which one of the following statements is TRUE?
(A) The TM  mode of the wave does not exist 
(B) The TE₁₀mode of the wave does not exist 
(C) The TM₁₀ and the TE₁₀ modes both exist and have the same cut-off frequencies
(D) The TM₁₀ and TM₀₁ modes both exist and have the same cut-off frequencies
 Explanation :: TM₁₀  mode doesn’t exist in rectangular waveguide.
12.  The Column-I lists the attributes and the Column-II lists the modulation systems. Match the attribute to the modulation system that best meets it

Column-I	Column-II
P Power efficient transmission of signals	1 Conventional AM
Q Most bandwidth efficient transmission of voice signals	2 FM
R Simplest receiver structure	3 VSB
S Bandwidth efficient transmission of signals with Significant dc component	4 SSB-SC

(A) P-4;Q-2;R-1;S-3         (B) P-2;Q-4;R-1;S-3           (C) P-3;Q-2;R-1;S-4            (D) P-2;Q-4;R-3;S-1
 Explanation :: Power efficient transmission →FM
Most bandwidth efficient → SSB-SC  Transmission of voice signal
Simplest receives structure → conventional AM  Bandwidth efficient transmission of → VSB  Signals with significant DC component
13. For the transfer function  G(jw)= 5 +jω , the corresponding Nyquist plot for positive frequency has the form

Answer::- (A)
Explanation :: As we increases real part ‘5’ is fixed only imaginary part increases.
14. The trigonometric Fourier series of an even function does not have the 
(A) dc term        (B) cosine terms          (C) sine terms   (D) odd harmonic terms
Explanation ::  f(t)  is even function, hence b_k=0 Where ‘ b_k ‘  is the coefficient of sine terms
15.  A silicon PN junction is forward biased with a constant current at room temperature. When the temperature is increased by 10ºC, the forward bias voltage across the PN junction
(A) increases by 60mV          (B) decreases by 60mV            (C) increases by 25mV         (D) decreases by 25mV
Explanation :: For Si forward bias voltage change by -2.5mv/ deg C
For 10⁰C increases, change will be 2.5*10= -25mV
16. The value of the integral where c is the circle Z=1is given by
(A) 0         (B) 1/10            (C) 4/5           (D) 1
17. Two D flip-flops are connected as a synchronous counter that goes through the following Q_BQ_A  sequence 00–> 11–> 01–> 10–> 00 …  The combination to the inputs D_{A &} D_B   are

Answer :: D
18. A transmission line of characteristic impedance 50W is terminated in a load impedance Z_{L ,}The VSWR of the line is measured as 5 and the first of the voltage maxima in the line is observed at a distance of λ/4  from the load. The value of Z_L is
(A) 10Ω   (B) 250 Ω  (C) (19.23 +j46.15) Ω   (D) (19.23-j46.15) Ω
19. When the output Y in the circuit below is ‘1’, it implies that data has

(A) changed from 0 to 1 (B) changed from 1 to 0 (C) changed in either direction (D) not changed
 Exp: – When data is ‘0’, Q is ‘0’  And Q’ is ‘1’ first flip flop   Data is changed to 1  Q is 1 → first ‘D’
Q’ is connected to 2nd flip flop,   So that Q2=1   So that the inputs of AND gate is ‘1’==> y = ’1′
20. In amplifier application, FET is operated in 
a)  The controlled resistor region       b) The controlled source region       c) The aval anche breakdown region  d) None
21. A helical antenna is used for satellite tracking because of its
a)  broad bandwidth    b) maneuverability  c) circular polarization   d) good front -to-back ratio
22. A₁ A₂ A₃ are ideal ammeters. If A₁ reads 5A, A₂ reads 12A, then A₃ should read

a)  7A b)        12A         c) 13A           d) 17A    
23. The steady state current through 1H inductance

a)  zero       b) 5A         c) 3A           d) 6A       
24. The total number of 128 8 RAM chips is needed to provide a memory capacity of 2048 bytes is:
a)  11        b) 16          c) 10            d) 8 
25. PLL can be used to demodulate
a)  DSB-SC signals  b) PCM signals  c) PAM signals  d) FM signals     
26. Compared to BJT, MOSFET enjoyi ng an advantage of
a)  Able to handle hi gh power    b) Ease of cont rol     c) Requires less power in driving it     d) None of these 
27. Which of the following noise becomes important at microwave frequencies?
a)  short noise     b) transit time noise    c) flicker noise    d) thermal noise  
28.

Answer :: D
29.

Answer :: A
30. DC-emphasis is used 
a)  to reduce overall modulation index
b) to attenuate l ow modul ation frequencies
c) to attenuate high modul ation frequencies
d) to attenuate mi d-band modulation frequencies.
31. A transmission li ne of 20 ohms characteristic impedance is connected to a load of 20+20j The normalized impedance is:
a) 400+400j     b) 20j        c) 40 +20j       d) 1+1j
32.

Answer :: A.
Expalnation :: s(t) —> step response, Therefore impulse response is

33.The drain of an n-channel MOSFET is shorted to the gate so that VGS = VDS. The threshold voltage (VT) of MOSFET is 1 V. If the drain current (ID) is 1 mA for VGS = 2V, then for VGS = 3V, ID is 
A) 2 mA        B) 3 mA      C) 9 mA         D) 4 mA
34.The 8085 assembly language instruction that stores the content of H and L registers into the memory locations 2050H and 2051H, respectively, is 
A) SPHL 2050         B) SPHL2051      C) SHLD 2050        D) STAX 2050
35. The cascade amplifier is a multistage configuration of
A) CC-CB         B) CE-CB      C) CB-CC      D) CE-CC
36.Consider the following statements S1 and S2. S1: The b of a bipolar transistor reduces if the base width is increased. S2: The b of a bipolar transistor increases if the doping concentration in the base is increased. Which one of the following is correct? 
A) S1 is FALSE and S2 is TRUE   B) Both S1 and S2 are TRUE     C) Both S1 and S2 are FALSE   D) S1 is TRUE and S2 is FALSE
37. Which interrupt has the highest priority?
A) INTR       B) TRAP         C) RST6.5     D) RST 5.5 – 7.5
38. BHE  of 8086 microprocessor signal is used to interface the
A) Even bank memory       B) Odd bank memory        C) I/O        D) DMA
39. What is the Address (SFR) for TCON, SCON, SBUF, PCON and PSW respectively?
A) 88H, 98H, 99H, 87H, 0D0H.        B) 98H, 99H, 87H, 88H, 0D0H        C) 0D0H, 87H, 88H, 99H, 98H        D) 87H, 88H, 0D0H, 98H, 99H
40. In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor 
A) 8/6         B) 12              C) 16              D) 8

APTRANSCO Assistant Engineer(AE)-Electrical Model Paper

1. A 50 kW dc shunt motor is loaded to draw rated armature current at any given speed. When driven (i) at half the rated speed by armature voltage control and (ii) at 1.5 times the rated speed by field control, the respective output powers delivered by the motor are approximately.
A) 25kW in (i) and 75kW in (ii) 

B) 25kW in (i) and 50kW in (ii)
C)  50kW in (i) and 75kW in (ii)

D) 50kW in (i) and 50kW in (ii)

2.  In the matrix equation Px = q, which of the following is a necessary condition for the existence of at least one solution for the unknown vector x:
A) Augmented matrix [Pq] must have the same rank as matrix P
C) Matrix P must be singular
B) Vector q must have only non-zero elements
D) Matrix P must be square

3. At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power factor at 0.97 lagging. If the capacitor goes out of serivce, the load power factor becomes
A)  0.85
B)   0.80 lag
C) 1.00
D) 0.90 lag

4. In  the  GH(s) plane,   the Nyquist plot of the  loop  transfer function G(s)H(s) = [(pi)e^-0.25]/s acesses through the negative real axis at the point
A) (-0.25, j0)
C)  (-l, j0)
B) (-0.5, j0)
D) (-2, j0)

5. For the scalar field u = x²/2 + y²/3, magnitude of the gradient at the point (1,3) is
A)  sqrt (13/9)

B)  sqrt (9/2)

C) sqrt (5)

D) 9/2

6. A digital-to-analog converter with a full-scale output voltage of 3.5 V has a resolution close to 14m V. Its bit size is
A) 4

B) 8
C) 16

D) 32

7. A single-phase half-controlled rectifier is driving a separately excited dc motor. The dc motor has a back emf constant of 0.5 V/rpm. The armature urrent is 5 A without any ripple. The armature resistance is 2 ohms. The converter is working from a 280 V, single phase ac source with a firing angle of 80°. Under this operating condition, the speed of the motor will be
A) 339 rpm

B) 359 rpm
C) 366 rpm

D) 386 rpm

8. In relation to the synchronous machines, which one of the following tatements is false?
A) In salient pole machines, the direct-axis synchronous reactance is greater than the quadrature-axis synchronous reactance
B) The damper bars help the synchronous motor self start

C) Short circuit ratio is the ratio of the field current required to produce the rated voltage on open circuit to the rated armature current
D) The V-curve of a synchronous motor represents the variation in the armature current with field excitation, at a given output power

 

19. The 8085 assembly language instruction that stores the content of H and L registers into the memory locations 2050H  and 2051H , respectively, is 
A) SPHL 2050H
B) SPHL2051H
C) SHLD 2050H
D) STAX 2050H

10. Two wattmeters, which are connected to measure the total power on a three phase system supplying a balanced load, read 10.5 kW and – 2.5 kW, respectively. The total power and the ower factor, respectively, are
A) 13.0 kW, 0.334
B) 13.0 kW, 0.684

C) 8.0 kW, 0.52 

D) 8.0 kW, 0.334

 

11. The insulation strength of an EHV transmission line is mainly governed by
A) load power factor
B) switching over-voltages

C) harmonics

D) corona

 

12. For the equation, s³-4s²+s+6=0, the number of roots in the left half of s-plane will be
A) zero
B) one
C) two

D) three

 

13. A dc potentiometer is designed to measure up to about 2 V with a slide wire of  800 mm. A standard cell of emf 1.18 V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of the test cell is
A) 1.00V
B) 1.34V
C) 1.50V

D) 1.70V

 

14. High Voltage DC (HVDC) transmission is mainly used for
A) bulk power transmission over very long distances
C) eliminating reactive power requirement in the operation
B) inter-connecting two systems with the same nominal frequency
D) minimizing harmonics at the converter stations

 

15. A bipolar junction transistor (BJT) is used as a power control switch by biasing it in the cut-off region (OFF state) or in the saturation region (ON state). In the ON state, for the BJT
A) both the base-emitter and base collector junctions are reverse biased
B) the base-emitter junction is reverse biased, and the base-collector junction is forward biased

C) the base-emitter junction is forward biased, and the base-collector junction is reverse biased

D) both the base-emitter and basecollector junctions are forward biased

 

16. The Q – meter works on the principle of
A) mutual inductance

B) self inductance
C) series resonance

D) parallel resonance

 

17. A 800 kV transmission line is having per phase line inductance of 1.1 mH/km and per phase line capacitance of 11.68 nF/km. Ignoring the length of the line, its ideal power transfer capability in MW is
A) 1204 MW

B) 1504 MW
C) 2085 MW 

D) 2606 MW

 

18. If the following program is executed in a icroprocessor, the number of instruction cycles it will take from START to HALT is
START MVI A, 14H ; Move 14H to register A

SHIFT   RLC            ; Rotate left without carry              

JNZ SHIFT ; Jump on non-zero to SHIFT
HALT

A) 4

B) 8
C) 13

D) 16

19. A moving iron ammeter produces a full scale torque of 240 uNm with a deflection of 120° at a current of 10 A. The rate of change of self inductance (uH/radian) of the instrument at full scale is

A) 2.0 uH/radian

B) 4.8 uH/radian
C) 12.0 uH/radian

D) 114.6 uH/radian

 

20. At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power factor at 0.97 lagging. If the capacitor goes out of serivce, the load power factor becomes
A)  0.85
B) 1.00
C)0.80 lag 

D) 0.90 lag

 

21. The conduction loss versus device current characteristic of a power MOSFET  is best approximated by
A) a parabola
B) a straight line
C) a rectangular hyperbola
D) an exponentially decaying function

 

22. The open loop transfer function of a unity feed back control system is given as G(s) = (as + 1)/s² .  The value of ‘a’ to give a phase margin of 45° is equal to  
A) 0.141
B) 0.441
C)0.841
D) 1.141

23. The armature resistance of a permanent magnet dc motor is 0.8 W. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be
A) 48.0%

B) 57.1%  

C)   59.2%
D) 88.8%

24. A single-phase, 230 V, 50 Hz, 4 pole, capacitor-start induction motor has the following stand-still impedances
Main winding Z_m   = 6.0 + j4.0 ohms 
Auxiliary winding Z_a  = 8.0 + j6.0 ohms,

The value of the starting capacitor required to produce 90° phase difference between the currents in the main and auxiliary windings will be
A) 176.84uF

B) 187.24 uF
C) 265.26 uF
D) 280.86 uF

 

25. A single-phase half-controlled rectifier is driving a separately excited dc otor. The dc motor has a back emf constant of 0.5 V/rpm. The armature current is 5 A without any ripple. The armature resistance is 2ohms. The converter is working from a 280 V, single phase ac source with a firing angle of 80°. Under this operating condition, the speed of the motor will be
A) 339 rpm

B) 359 rpm
C) 366 rpm

D) 386 rpm

 

26. A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt-amperes at 0.8 power factor. Suddenly a fault occurs reducing is electric power output by 40%. Neglect losses and assume constant power input to the shaft. The accelerating torque in the generator in MNm at the time of the fault will be
A) 1.528 

B) 1.018
C) 0.848 

D) 0.509

 

27. The Nyquist plot of loop transfer function G(s) H(s) of a closed loop control system passes through the point (-1, j0) in the G(s) H(s) plane. The phase margin of the system is
A) 0°
B) 45°
C) 90°

D) 180°

 

28. A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the number of poles required in the generator are
A) 6
B) 12
C) 16

D) 24

 

29. For the equation x(t)+3 x(t) +2x(t) = 5, the solution x (t) approaches which of  the following values as t tends to infinity ?
A) 0
B) 5
C) 25

D) 10

30. The following motor definitely has a permanent magnet rotor
A) DC commutator motor
B) Brushless dc motor
C) Stepper motor 

D) Reluctance motor

31.The current gain of a bipolar transistor drops at high frequencies because of
A) Transistor capacitances      

B) High current effects in the base
C) Parasitic inductive elements  

D) The early effect

 

32. The simultaneous application of signals x(t) and y(t) to the horizontal and vertical plates, respectively, of an oscilloscope, produces a vertical figure-of-8 display. If P and Q are constants, and x(t) = P sin (4t + 30), then y(t) is equal to
A) Q sin (4t – 30)
B) Q sin (2t + 15)
C) Q sin (8t + 60)

D) Q sin (4t + 30)

33. A 500 MW 3-phase Y-connected synchronous generator has a rated voltage of 21.5 kV at 0.85pf. The line current when operating at full load rated conditions ill be
A) 13.43 kA
B) 15.79 kA
C)23.25 kA 

D) 27.36 kA

 

34. Total instantaneous power supplied by a 3-phase ac supply to a balanced R-L load is
A) zero
B) constant
C) pulsating with zero average

D) pulsating with non-zero average

 

35. What are used to increase the range of ammeters.
A) Multipliers
B) Shunts
C) control Springs
D) Potential transformers

36. The number 1000 wouldappear just immediately after
A) FFFF (hex)
B) 1111 (binary)
C) 7777 (octal)
D) All of the above.

37. Among the logic families, the family which can be used at very high frequency greater than 100MHz in a 4 bit synchronous counter is

A) TTLAS

B) CMMOS

C) ECL

D) TTLLS

38. The frequency is measured by

A) Wheatstone bridge
B) hays bridge
C) Owens bridge
D) weins bridge

39. The most commonly used amplifier in  sample & hold circuits is

a) A unity gain non-inverting amplifier        

b) A unity gain inverting amplifier

c) An inverting amplifier with a gain of 10   

d) An inverting amplifiers with a gain of 100

40. Introducing a resistor in the emitter of a common amplifier stabilizes the dc operating point against variations in
a) Only the temperature     

b) only the β of the transistor
c) Both Temperature & β    

d) None of the above

ANSWERS ::

 

1	2	3	4	5	6	7	8	9	10
B	A	B	B	C	B	C	C	C	D

11	12	13	14	15	16	17	18	19	20
B	C	B	A	D	C	C	C	B	C

21	22	23	24	25	26	27	28	29	30
A	A	A	A	C	A	D	D	B	C

31	32	33	34	35	36	37	38	39	40
A	B	B	B	B	D	C	D	B	C

APTRANSCO AE/JLM/Jr.Assistants/Sub-Engineer Recruitment 2011-2012

The Government of Andhra pradesh has decided to recruit  all elibile candidates inorder to fill vacancies  Junior Lineman (JLM) ,Junior Assistant (LDC),Sub Engineers, Assistant Engineers (AE) in Andhra Pradesh Transmission corporation Recruitment 2011-2012 For 6263 Jobs Under Various Categories .Eligible Candidates can Apply Online @ http://aptransco.cgg.gov.in/
APTRANSCO has released the recruitment notification for the Candidates for the placement of Junior Linemen (JLM), Junior Assistant (LDC), Sub-Engineer and Assistant Engineer (AE).
The detailed jobs/posts/vacancies are :

Name of the Post	No. of Vacancies
Junior Lineman (JLM)	5070
Junior Assistant (LDC)	500
Sub Engineers	443
Assistant Engineers (AE)	250

There are a total of 6263 Vacancies  in the aptransco including vacancies in all the fields all the fields .

The full detailed Notification will be updated on this site & on the official website of the ap transco  on 15/12/2011

Syllabus for Written Test of AP Transco Assistant Engineer (Electrical,Telecom,Civil)

APTRANSCO AE Telecom Syllabus ::
Network Analysis : Kirchoff’s Laws, RC, RL & RLC Circuits, Initial conditions, Energy, Power, Instantaneous, max, average, RMS values of alternating currents, Phaser representation, transient and steady state analysis, Total response. Network analysis using Laplace Transforms, properties of Laplace transforms. Fourier Series: Continuous and discrete Fourier Transforms, z-transforms. Applications to signal Analysis. Convolution. Network Theorems and Applications. Two Port Parameters, Series, Parallel and Cascade connections of two port networks, Z, Y, ABCD Parameters, Network Functions, Poles and Zeros. Driving point and Transfer Functions, Image Parameters, Conventional LP, HP, BP, Band Stop Filters. Composite Filters, T, ╥ & Lattice Networks, Attenuators and Equalizers.
Electronic Devices & Circuits: PN Junction, PNP, NPN Transistors. Biasing, Tunnel Diode, FET, UJT,SCR Characteristics, Various CB,CE,CC transistor Amplifiers – Analysis & Performance. RC coupled and push pull amplifiers, compensation techniques, Feedback, Negative feedback, oscillator Circuits, Phase Shift Oscillator.
Digital Circuits: Wave Shaping, multivibrators, Sweep Generators, Counters, logic Gates and Circuits, Number Systems, Codes, Error Detection and Correction. Sequential Circuits, Integrated Circuits OP Amps-Applications, IC Comparator Circuits, A/D, D/A Converters.
Linear Control System: Open loop, Closed loop system, Signal Flow Graphs, Stability, Routh – Hurwitz and Nyquist Criterion, Bode plots, Gain-phase Margin, Lead-Lag compensation Techniques.
Transmission Lines & Antennas: Transmission line equation, Primary and Secondary Parameters, Propagation constants, Open and Short Circuited Lines, Standing Waves, Reflection Coefficient, VSWR, Line as Circuit element, Impedance Matching.
Maxwell’s equations and Field Theory: Various Laws & Theorems in Electromagnetism, Plane Waves, Boundary Conditions, Concept of Radiation, Half wave Dipole, Antenna Arrays, Communication Antennas – performance Characteristics.
Wave guides and Components: Reciprocal & non Reciprocal Wave guide components, Couplers, Tees, Microwave Sources, Microwave Communication, Link Design.
Basics of Micro Processors & Micro Controllers: Architecture and Assemblers, memory Devices.
Communication systems: Modulation, All types of Modulation techniques, SNR, Analog & Digital Communication techniques, multiplexes, Demodulators, Radio Receivers & Transmitters – Characteristics & Basics of Fibre Optics Communication and Satellite Communication Systems.
APTRANSCO AE Electrical Syllabus ::
Electric Circuits:
Network graph, KCL, KVL, node and mesh analysis, star/ delta transformation; electromagnetic induction; mutual induction; ac fundamentals; harmonics, transient response of dc and ac networks; sinusoidal steady-state analysis, resonance, ideal current and voltage sources, Thevenin’s, Norton’s, Superposition and Maximum Power Transfer theorems, two-port networks, three phase circuits, power measurement .

Electrical Machines:
Single phase transformer – equivalent circuit, phasor diagram, tests, regulation and efficiency; three phase transformers – connections, parallel operation; auto-transformer; DC machines – types, windings, generator/ motor characteristics, armature reaction and commutation, starting and speed control of motors; three phase induction motors – principles, types, performance characteristics, starting and speed control; single phase induction motors; synchronous machines – performance, regulation and parallel operation of generators, motor starting, characteristics and applications .

Power Systems:
Basic power generation concepts; transmission line models and performance; underground cable, string insulators; corona; distribution systems; per-unit quantities; bus impedance and admittance matrices; load flow; voltage control; power factor correction; economic operation; symmetrical components; fault analysis; principles of over-current, differential and distance protection; protection of alternator, transformer, transmission lines neutral earthing, solid state relays and digital protection; circuit breakers; system stability concepts, swing curves and equal area criterion

Utilization & Control Systems:
Principles of feedback; transfer function; block diagrams; steady-state errors; Routh and Nyquist techniques; Bode plots; root loci; lag, lead and lead-lag compensation; Heating – resistance, induction, dielectric; Welding – spot, seam and butt; Electric traction – speed-time curves, tractive effort;

Measurements:
Bridges and potentiometers; PMMC, moving iron, dynamometer and induction type instruments; measurement of voltage, current, power, energy and power factor; digital voltmeters and multi-meters; phase, time and frequency measurement; Q-meters; oscilloscopes;

Analog and Digital Electronics:
Characteristics of diodes, BJT, FET; amplifiers -biasing, equivalent circuit and frequency response; oscillators and feedback amplifiers; Combinational and sequential logic circuits; multiplexer; Schmitt trigger; A/D and D/A converters; 8-bit microprocessor basics, architecture, programming and interfacing.

Power Electronics and Drives:
Semiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs – static characteristics and principles of operation; triggering circuits; phase control rectifiers; bridge converters – fully controlled and half controlled; principles of choppers and inverters; basic concepts of adjustable speed dc and ac drives.
APTRANSCO AE Civil Syllabus ::
Strength of Materials: Simple stresses and strains.  Hooke’s  law.  Stress-strain curve for mild steel, elastic constants, compound bars, temperature stresses, strain energy, resilience, impact loading, SFD and BMD for simple cantilever and overhanging beams. Centre of gravity and moment of inertia, bending and shear stress distributions.  Theory of pure torsion, helical spring, thin  and thick cylinders, analysis of trusses by method of joints and method of sections, combined direct and bending stresses, column and struts, deflection of beams-double integration, moment area and conjugate beam methods.
Reinforced Concrete: Basic reinforcing materials, tests on cement and aggregates. Structural concrete and its grades, workability tests and concrete mix design.  Singly and  doubly reinforced beams, working stress design of rectangular and flanged beams shear bond, development length and torsion in beams, one-way and two-way slabs, axially and eccentrically loaded columns, isolated and combined footings.  Basic concepts of limit state design and its applications to the design of beams, slabs and columns.
Steel Structures: Grades of steels, design of simple and compound beams, riveted and welded joints, riveted and welded connections’-eccentric framed and seated, simple and compound columns, slab and gusseted bases, grillage foundations, roof trusses, plastic analysis – plastic bending of beams, shape factor, plastic analysis theorems, and analysis of fixed, propped cantilever beams by static and kinematic methods.
Fluid Mechanics & Machinery : Fluid properties, pressure measurements, manometers, forces on plane and curved surfaces, center of pressure, principle of buoyancy, stability of floating and submerged bodies, metacentre, Kinematics of fluid flow, equation of continuity.  Euler’s and Bernoulli’s equations, Impulse-momentum, flow measuring device s – orifices and mouth pieces, notches and weirs, flow through pipes, open channel flow, impact of jets – stationery and moving vanes (flat and curved), radial vanes, hydraulic turbines, pumps and machinery.
Soil Mechanics: Physical properties of soils, classification and identification, permeability, capillarity, seepage, compaction, shear strength, Earth pressure, slope stability.
Foundation Engineering: Stress distribution in soils, bearing capacity, settlement analysis, pile foundation, Coffer dams, Caissons, Dewatering,  Bracing  for excavations, site investigations, New mark charts, Machine foundation.

Mahanagar Telephone Nigam Limited (MTNL)

Mahanagar Telephone Nigam Limited (MTNL)
(A Govt. of India Enterprise)

MTNL invites applications from bright, result oriented, energetic and qualified experienced professionals of Indian origin for the posts of Senior Management Trainee in Telecom and Marketing :

• Senior Management Trainees (Telecom) : 30 posts
• Senior Management Trainees (Marketing) : 10 posts

Age : 30 years

Pay Scale : Rs.29100-54500

Application Fee : Rs.1000/- (Rs.500/-  for SC/ST/PH) in the form of DD in favour of Mahanagar Telephone Nigam Limited payable at New Delhi.

How to Apply : Application in the prescribed format should be send on or before 26/12/2011  to Post Box No. 7049, New Delhi - 110002.

For further information and application form format kindly view http://mtnl.net.in/1.tiff , http://mtnl.net.in/2.tiff and http://mtnl.net.in/3.tiff

National Mineral Development Corporation (NMDC) Limited

National Mineral Development Corporation (NMDC) Limited
(A Govt of India Enterprise)
“Khanij Bhavan”, 10-3-311/A, Masab Tank, Hyderabad-500173

NMDC is looking for suitable persons for following 35  posts its iron ore mines in states of Chhattisgarh, Karnataka and MP in following areas : 

• Civil : Dy. Manager (E2)/ Asst. Manager (E1)
• Chemical : Dy. Manager (E2)/ Asst. Manager (E1)
• Materials : Dy. Manager (E2)/ Assistant Manager (E1)
• Mining : Dy. Manager (E2)/ Assistant Manager (E1)
• Raj Bhasha : Dy. Manager (E2)/ Assistant Manager (E1)

How to Apply : Interested candidates may send their biodata with IPO/DD of Rs.100 (No fee for SC/ST candidates) along with copies of certificates to Assistant General Manager (Personnel) (R&P), NMDC Ltd., 10-3-311/A, “Khanij Bhavan”, Castle Hills, Masab Tank, Hyderabad – 500173 so as to reach this office on or before 19/12/2011.

 Please visit http://www.nmdc.co.in/nmdccareers for more information and application format. (advt. no. 03/2011)

BSNL MADHYA PRADESH JTO RECRUITMENT

Bharat Sanchar Nigam Limited (BSNL)
(A Government of India Enterprise)
O/o Chief General Manager,  M.P.Telecom Circle, Bhopal-462015 (MP)

Recruitment of Junior Telecom Officers for persons with disabilities (PWD). Special recruitment Drive


BSNL  MP will recruit Junior Telecom Officers (JTOs) through Special Recruitment Drive (SRD) for Persons with Disability (PWD) in the IDA pay scale of Rs. 16400-40500. :

• Junior Telecom. Officers (JTOs) : 06  posts (Telecom-5, Civil-2), Pay Scale : Rs. 16400-40500 (IDA Pattern), Age : 30 years. Relaxation For PWD candidates upto 10 years for OC candidate; 15 years for SC/ST and 13 years for OBC, Qualification :  Bachelor of Engineering/ Bachelor of Technology or equivalent Engineering degree in any of the following disciplines from a recognized engineering college / university: Telecommunication/ Electronics/ Radio/ Computer/ Electrical./  IT (Information Technolog)/ Instrumentation/ Civil/ Electrical

Last Date : Application in the prescribed format should be send on or before 12/12/2011 to    The DGM (HR), O/o the CGM Telecom, BSNL, M.P.Telecom Circle, BSNL Bhawan, 2nd floor, Room No. 213, Hoshangabad Road, Bhopal-462015

Please view http://mp.bsnl.co.in/images/jtosrd2011.pdf  for details and application format. 

BSNL BIHAR JTO RECRUITMENT

Bharat Sanchar Nigam Limited (BSNL)
(A Government of India Enterprise)
O/o Chief General Manager, Bihar  Telecom Circle, Patna Bihar 
 
Recruitment of Junior Telecom Officers for persons with disabilities (PWD). Special recruitment Drive


BSNL  Bihar will recruit Junior Telecom Officers (JTOs) through Special Recruitment Drive (SRD) for Persons with Disability (PWD) in the IDA pay scale of Rs. 16400-40500. :

• Junior Telecom. Officers (JTOs) : 06 posts, Pay Scale : Rs. 16400-40500 (IDA Pattern), Age : 30 years. Relaxation For PWD candidates upto 10 years for OC candidate; 15 years for SC/ST and 13 years for OBC, Qualification :  Bachelor of Engineering/ Bachelor of Technology or equivalent Engineering degree in any of the following disciplines from a recognized engineering college / university: Telecommunication/ Electronics/ Radio/ Computer/ Electrical./  IT (Information Technolog)/ Instrumentation/ Civil/ Electrical

Last Date : Application in the prescribed format should be send on or before 12/12/2011 to  Deputy General Manager (Admin), O/o CGM Telecom, 3rd floor, Sanchar Sadan, Budh Marg, Patna - 1 (Bihar) 

 Please view https://docs.google.com/viewer?url=http://210.212.17.241/SpecialSchemes/JTO-SRD-2011.pdf&embedded=true&chrome=true&pli=1  for details and application format. 

BSNL GUJARAT JTO RECRUITMENT

Bharat Sanchar Nigam Limited (BSNL)
(A Government of India Enterprise)
O/o Chief General Manager,  Gujarat Circle, Bharat Sanchar Nigam Ltd. [BSNL]

Recruitment of Junior Telecom Officers for persons with disabilities (PWD). Special recruitment Drive


BSNL  Gujarat will recruit Junior Telecom Officers (JTOs) through Special Recruitment Drive (SRD) for Persons with Disability (PWD) in the IDA pay scale of Rs. 16400-40500. :

• Junior Telecom. Officers (JTOs) : 25  posts (Telecom-5, Civil-2), Pay Scale : Rs. 16400-40500 (IDA Pattern), Age : 30 years. Relaxation For PWD candidates upto 10 years for OC candidate; 15 years for SC/ST and 13 years for OBC, Qualification :  Bachelor of Engineering/ Bachelor of Technology or equivalent Engineering degree in any of the following disciplines from a recognized engineering college / university: Telecommunication/ Electronics/ Radio/ Computer/ Electrical./  IT (Information Technolog)/ Instrumentation/ Civil/ Electrical

Last Date : Application in the prescribed format should be send on or before 12/12/2011.
Please visit http://www.gujarat.bsnl.co.in/News/Marketing_News.aspx  for details and application format. 

M.P. Power Generating Company Limited Recruitment

M.P. Power Generating Company Limited
Recruitment in Various Cadres
Advertisement No .01 Dated 26 -11-2011

M.P. Power Generating Company Limited, a successor power generating company of MPSEB intends to induct around 186 Executive Trainee, 19 Accounts Officer, 24 Shift chemist and 135 Plant Assistant (ITI) Trainee, in various disciplines indicated below

1. Executive Trainee : 229 Posts
• Pay: Rs. 15600 + other allowances after successful complettion of training
• Disciplines :
  Mechanical - 114 Electrical - 37 Electronics - 35 Chemistry - 24 Finance & Accounts - 19

2. Plant Assistant (ITI) : 135 Posts
• Pay: Rs. 5200 + other allowances after successful complettion of training
• Disciplines :
  Mechanical - 80 Electrical - 55

Last Date for receiving application : 15.12.2011

Application Fee : Demand Draft/Banker Cheque of Rs. 1000/- issued in favour of Sr.Accounts Officer (COG&HS) MPPGCL , payable at Jabalpur. No Fee for for SC/ ST/PD

For Further Detail, Application Form, Please Visit http://www.mppgenco.nic.in/careers.htm

BSNL JTO RECRUITMENT

Bharat Sanchar Nigam Limited (BSNL)
(A Government of India Enterprise)
O/o Chief General Manager, U.P. (West) Telecom Circle, Shastri Nagar, 
Telephone Exchange, Tej Garhi Chauk, Meerut (UP)
 
Recruitment of Junior Telecom Officers for persons with disabilities (PWD). Special recruitment Drive


BSNL  UP West will recruit Junior Telecom Officers (JTOs) through Special Recruitment Drive (SRD) for Persons with Disability (PWD) in the IDA pay scale of Rs. 16400-40500. :

• Junior Telecom. Officers (JTOs) : 03 posts, Pay Scale : Rs. 16400-40500 (IDA Pattern), Age : 30 years. Relaxation For PWD candidates upto 10 years for OC candidate; 15 years for SC/ST and 13 years for OBC, Qualification :  Bachelor of Engineering/ Bachelor of Technology or equivalent Engineering degree in any of the following disciplines from a recognized engineering college / university: Telecommunication/ Electronics/ Radio/ Computer/ Electrical./  IT (Information Technolog)/ Instrumentation/ Civil/ Electrical

Last Date : Application in the prescribed format should be send on or before 12/12/2011 to  Deputy General Manager (HR&Admn.), O/o CGMT, U.P.(W) Telecom Circle, BSNL, Ist floor Shastri Nagar Telephone Exchange, Tejgarhi Chauk, Meerut-250004  (UP)

 Please view http://www.upw.bsnl.co.in/upw-rectt-jto-srd-2011.pdf  for details and application format. 

ISRO RECRUITMENT

Indian Space Research Organisation [ISRO].
Liquid Propulsion Systems Centre (LPSC)

• Technical Assistant (Mechanical)-11 Posts
• Technical Assistant (Electronics)-05 Posts
• Technical Assistant (Automobiles)-02 Posts
• Technical Assistant (Civil)-01 Post
• Technical Assistant (Air Conditioning)-01 Post
• Technical Assistant (Electrical)-01 Post
• Technical Assistant (Computer Science)-01 Post
• Technician ‘B’ (Electronics Mechanic) – 06 Post
• Technician ‘B’ (Fitter) – 04 Posts
• Technician ‘B’ (Welder) – 01 Post
• Technician ‘B’ (Photographer) – 01 Post
• Technician ‘B’ (Carpenter) – 01 Post
• Technician ‘B’ (Plumber) – 06 Posts

Last Date: 9th Dec 2011
For details visit the link below:
http://recruit.lpsc.gov.in/common/advt.jsp

IOCL OPERATORS RECRUITMENT

BHEL RECRUITMENT

Bharat Heavy Electricals Limited (BHEL)
(Government of India Undertaking) 
HRM Department, Building 24, Bharat Heavy Electricals Limited, Tiruchirappalli - 620014

BHEL Tiruchirappalli a major Manufacturing unit with a workforce of over 11,000 employees is currently looking for Security Personnel (Males only) for its Units at Tiruchirapalli and Thirumayam in the following posts :

• Sub-Inspector Gr.III (Security) : 173 posts
• Sub-Inspector Gr.III (Fire) : 63 posts
• Age : 32 years for General Candidates as on 01/11/2011 
• Pay Scale : Rs.11700 - 23000

How to Apply : Apply Online at BHEL Tiruchirappalli website  up to 30/11/2011.

Please visit  http://careers.bhel.in/recruitmentsec  for all the details and a link to apply online.

BEL RECRUITMENT

BHARAT ELECTRONICS LIMITED (BEL)
(A Govt. of India Enterprise)
SBU , Bangalore

Bharat Electronics Limited (BEL), a Navratana company and India’s premier professional electronics company,  requires the following  Engineering professionals on contract basis for its Military Radars SBU of Bangalore Complex  : 

• Electronics & Communication/ Mechanical Engineers : 15 posts
• (12 Electronics and Communication Engineering & 3 Mechanical Engineering), 
• Age : 25 years

Appplication Fee :  Crossed Demand Draft drawn on any Scheduled Bank (preferably State Bank of India) for Rs.500/- (DD of Rs. 200/- in case of SC/ST/PWD candidates) in favour of Bharat Electronics Limited, Bangalore.

How to Apply :  Applications in the prescribed format filled in application should be mailed to
hrmr@bel.co.in latest by 23/11/2011.

Please view  http://bel-india.com/images/itm-pdfs/8-Nov-2011-MR.pdf for more information and application form  is available at http://bel-india.com/images/itm-pdfs/8-Nov-2011-MR-app-form.pdf

NTPC Diploma Trainees 2011 Written test Pattern

NTPC Diploma Trainees All India Written Test (For all Regions) is scheduled to be held on 20.11.2011 (Sunday – Time: 10 AM to 12 Noon). The test can be taken in Hindi or English. The Exam Paper will be in two parts. Part-I will be Knowledge Test and will consist of 70 multiple-choice questions of the relevant 4 disciplines (Civil/ Electrical/ Mechanical/ C&I) as advertised. Part-II will be Aptitude Test and will consist of 50 multiple-choice questions on English, quantitative aptitude & Reasoning. Negative Marking: 1/4th mark will be deducted for each wrong answered question.

NTPC Official Website: http://diploma.ntpccareers.net/

Click her for NTPC Diploma Trainee Syllabus 2011 (Civil/ Electrical/ Mechanical/ C&I)

Click here to Download NTPC Diploma Trainees 2011 Admit Cards

BSNL Junior Telecom Officers (JTO) Exam 2009 Paper

1. One of the following statement which is true for relative dielectric constant is -
a) It is dimensionless
b) It is not equal to unity for vacuum
c) It’s value for all substances is less than one
d) None
Answer is :- It is dimensionless

2. Pure metals generally have-
a) high conductivity and low temperature coefficient
b) high conductivity and large temperature coefficient
c) low conductivity and zero temperature coefficient
d) low conductivity and high temperature coefficient
Answer is :- high conductivity and large temperature coefficient

3. For small size, high frequency coils, the most common core material is
a) Air
b) Ferrite
c) Powdered ion
d) Steel
Answer is :- Air

4. For an abrupt junction Varactor diode, the dependence of device capacitance (C) on applied reverse bias (V) is given by-
a) C a V1/3
b) C a V-1/3
c) C a V1/2
d) C a V-1/2
Answer is :- C a V-1/3

5. A superconductor is a-
a) A material showing perfect conductivity and Meissner effect below a critical temperature
b) A conductor having zero resistance
c) A perfect conductor with highest dimagnetic susceptibility
d) A perfect conductor which becomes resistive when the current density through it exceeds a critical value
Answer is :-A material showing perfect conductivity and Meissner effect below a critical temperature

6. When a semiconductor based temperature transducer has a temperature coefficient of –2500 mV/0C then this transducer is indeed a-
a) Thermistor
b) Forward biased pn junction diode
c) Reverse biased pn junction diode
d) FET
Answer is :- Forward biased pn junction diode

7. The location of lightning arrestor is -
a) Near the transformer
b) Near the circuit breaker
c) Away from the transformer
d) None
Answer is :- Near the transformer

8. Time constant of an RC circuit increases if the value of the resistance is -
a) Increased
b) Decreased
c) Neither a nor b
d) Both a and b
Answer is :- Increased

9. Intrinsic semiconductors are those which -
a) Are available locally
b) Are made of the semiconductor material in its purest from
c) Have more electrons than holes
d) Have zero energy gaps
Answer is :- Are made of the semiconductor material in its purest from

10. The primary control on drain current in a JFET is exerted by -
a) Channel resistance
b) Size of depletion regions
c) Voltage drop across channel
d) Gate reverse bias
Answer is :- Gate reverse bias

11. The electrical conductivity of metals which is expressed in ohm-1 m-1 is of the order of -
a) 1010
b) 105
c) 10-4
d) 10-6
Answer is :- 105

12. When biased correctly, a zener diode –
a) acts as a fixed resistance
b) has a constant voltage across it
c) has a constant current passing through it
d) never overheats
Answer is :- has a constant voltage across it

13. The current amplification factor adc is given by –
a) IC/IE
b) IC/IB
c) IB/IC
d) IB/IC
Answer is :- IC/IE

14. Compared to bipolars, FETs have-
a) high input impedance
b) low input impedance
c) same input impedance
d) none
Answer is :- high input impedance

15. The source-drain channel of JFET is -
a) ohmic
b) bilateral
c) unilateral
d) both a and b
Answer is :- both a and b

16. diac is equivalent to a -
a) Pair of SCRs
b) Pair of four layer SCRs
c) Diode and two resistors
d) Triac width
Answer is :- Pair of four layer SCRs

17. When a sample of N type semiconductor has electron density of 6.25 ´ 1011 /cm3 at 300K and if the intrinsic concentration of carriers in this sample is 2.5 ´ 1013/cm3 then the hole density will be –
a) 106/cm3
b) 103/ cm3
c) 1010/ cm3
d) 1012/ cm3
Answer is :- 103/ cm3

18. The statement ‘In any network of linear impedances, the current flowing at any point is equal to the algebraic sum of the currents caused to flow at that point by each of the sources of emf taken separately with all other emf’s reduced to zero’ represents -
a) Kirchhoff’s law
b) Norton’s theorem
c) Thevenin’s theorem
d) Superposition theorem
Answer is :- Superposition theorem

19. One of the following modes which has the characteristics of attenuation becoming less as the frequency is increased and is attractive at icrowave frequencies of circular cylindrical wave guides is –
a) TE1 mode
b) TM01 mode
c) TE01 mode
d) Higher order mode
Answer is :- TE01 mode

20. A two-port network is symmetrical if –
a) z11z22 – z12z21 = 1
b) h11h22 – h12h21 = 1
c) AD – BC = 1
d) y11y22 – y12y21 = 1
Answer is :-AD – BC = 1

21. For transmission line load matching over a range of frequencies, it is best to use a-
a) balun
b) broad band directional coupler
c) double stub
d) single stub of adjustable position
Answer is :- double stub

22. The poles and zeros of a driving point function of a network are simple and interlace on the negative real axis with a pole closest to the origin. It can be realised -
a) by an LC network
b) as an RC driving point impedance
c) as an RC driving point admittance
d) only by an RLC network
Answer is:- only by an RLC network

23. Poles and zeros of a driving point function of a network are simple and interlace on the jw axis. The network consists of elements –
a) R and C
b) L and C
c) R and L
d) R, L and C
Answer is :- L and C

24. For a two port reciprocal network, the output open circuit voltage divided by the input current is equal to –
a) B
b) Z12
c) —
d) h12
Answer is :- Z12

25. In a short electric doublet the radiation properties are so that-
a) The induction field diminishes as the square root of the distance and is only appreciable in the vicinity of the conductor.
b) In the radiation, magnetic field is minimum when the current is maximum.
c) The radiation resistance of a short doublet antenna is extremely high.
d) Mean rate of power through a unit area of spherical sphere surrounding this doublet is proportional to the square of the elemental length, other factors remaining constant.
Answer is :-Mean rate of power through a unit area of spherical sphere surrounding this doublet is proportional to the square of the elemental length, other factors remaining constant.

26. The frequency modulated (FM) radio frequency range is nearly -
a) 250 –300 MHz
b) 150 – 200 MHz
c) 90 – 105 MHz
d) 30-70 MHz
Answer is :-90 – 105 MHz

Cement Corporation Of India Limited

Cement Corporation Of India Limited
(A Govt. Of India Enterprise)
Regd. Office: Core-V, Scope Complex, 7-Lodhi Road
New Delhi-110 003

CCI is looking for the professionals, for the following positions on regular or deputation basis

1. Executive Director (Projects) / General Manager(Projects) / Addl.Gen. Manager(Projects) : 01 Post

2. Executive Director (Marketing) / General Manager(Marketing) / Addl.Gen.Manager(Marketing) : 01 Post

3. General Manager(Tech.) / Addl.Gen. Manager(Tech.). : 03 Posts

4. Addl.Gen.Mgr.(Maint.& Services) / Dy.Gen.Mgr.(Maint. & Services) / Sr.Manager.(Maint. & Services) : 01 Post

5. Dy. Gen.Mgr.(Projects) / Sr.Manager (Projects) / Manager (Projects) : 02 Posts

6. Dy.Gen.Mgr.(Materials Management) : 01 Post

7. Senior Manager (Materials Management) : 01 Post

8. Manager (Materials Management) : 01 Post

9. Manager(Mechanical) : 01 Post

Last Date for receipt of application : 25.11.2011

    Interested candidates may send their applications duly completed in all respects ordinary post in the cover super scribed Application for the post of _____ to Dy.General Manager (Personnel), Cement Corporation of India Ltd, Post Box No. 3061 , Lodhi Road Post Office , New Delhi-110003

For Experience, More Detail and Application Format, Please visit http://www.cementcorporation.co.in/UserFiles/files/RECTT_ADVT(1).pdf

POWER FINANCE CORPORATION LIMITED

POWER FINANCE CORPORATION LIMITED
(A Government of India Undertaking)
Urjanidhi,1 Barakhamba Lane, New Delhi-110 001.

PFC is looking for professionals in the following areas

1. Manager (Technical) : 01 Post

2. Dy.Manager (HR) : 01 Post

3. Dy.Manager (Finance) : 05 Posts

4. Asst. Manager (Technical) : 01 Post

5. Officer (MS) : 05 Posts

6. Officer (Technical) : 03 Posts

7. Jr. Accountant : 08 Posts

8. Translator (Hindi) : 01 Post

Last Date for receipt of application : 28.11.2011
05.12.2011 (For candidates from far-flung areas)

For More Detail and Application Form Download, Please visit http://www.pfcindia.com/Career_View.aspx

MPSC Asst Motor Vehicle Inspector Main Exam Solved Paper