CIVIL ENGINEERING PRACTICE QUESTIONS

1. Consider the following statements:
The use of super plasticizers as admixture
1. Increases compressive strength of concrete
2. Permits lower water-cement ratio, thereby strength is increased
3. Reduces the setting time of concrete
4. Permits lower cement content, thereby strength is increased
Which of the statements given above is/are correct?
(a) I and 3 only
(b) 3 and 4 only
(c) 1,3and4only
(d) 2 only
Ans. (d)

2. Consider the following statements:
Curing of concrete is necessary because
1. Concrete needs more water for chemical reaction
2. It is necessary to protect the water initially mixed in concrete from being lost during evaporation
3. Penetration of surrounding water increases the strength of concrete
Which of the statements given above is/are correct?
(a) 1, 2 and 3
(b) 1 and 3 only
(c) 2 only
(d) 3 only
Ans. (c)

3. Match List-I with List-II and select the correct answer using the code given below the Lists:
List-I List-II
A. Absorption and surface moisture in 1. Interferes with hydration of cement
aggregates
B. Deleterious material 2. Improves work-ability of mix
C. Grading of aggregate 3. Ensures durability of all types of structures
D. Chemical stability 4. Affects the mix proportions
Code:
A B C D
(a) 3 1 2 4
(b) 4 2 1 3
(c) 3 2 1 4
(d) 4 1 2 3
Ans. (d)

4. Why are bricks soaked in water before using in brick masonry?
(a) For removing dust
(b) For reducing air voids
(c) For preventing depletion of moisture from mortar
(d) For reducing efflorescence
Ans. (c)

5. Which type of brick masonry bond is provided for heavy loads on masonry?
(a) English bond
(b) Zigzag bond
(c) Single Flemish bond
(d) Double Flemish bond
Ans. (a)

6. Consider the following, types of cements:
1. Portland pulverized fuel ash cement
2. High alumina cement.
3. Ordinary Portland cement
4. Rapid hardening cement
Which one of the following is the correct sequence of the above cement in terms of their
increasing rate of strength gain?
(a) 2-3-4-1
(b) 1-3-4-2
(c) 2-1-3-4
(d) 3-1-2-4
Ans. (c)

7. Ultimate strength of cement is influenced by which one of the following?
(a) Tricalcium silicate
(b) Dicalcium silicate
(c) Tricalcium aluminate
(d) Tetracalcium alumino ferrite
Ans. (b)

8. Why is lime added to cement slurry for the topcoat of plastering?
(a) To improve the strength of plaster
(b) To stiffen the plaster
(c) To smoothen the plaster for ease of spread
(d) To make the plaster non-shrinkable
Ans. (d)

9. What is the number of plastic hinges which will cause the overall total collapse of a structure?
(a) One more than the order of statical indeterminacy
(b) Equal to order of statical indeterminacy
(c) One less than the order of statical indeterminacy
(d) Not determinable
Ans. (a)

10. What is/are the use(s) of influence lines?
(a) To study the effect of moving loads on the structure
(b) To calculate the value of stress function with the critical load condition
(c) To find the position of live load for a maximum value of particular stress function
(d) Towards all the above purposes
Ans. (d)

11. What is the variation of influence line for stress function in a statically determinate structure?
(a) Parabolic
(b) Bilinear
(c) Linear
(d) Uniformly rectangular
Ans. (c)

12. What is the maximum permissible longitudinal pitch in staggered riveted compression joints?
(a) 500 mm
(b) 400mm
(c) 300mm
(d) 100mm
Ans. (c)

13. A concentrated load W moves on the span of a three-hinged arch. The horizontal thrust at the supports is maximum when the load is at which one of the following?
(a) The springing
(b) One-sixth of the span from one end
(c) Quarter span
(d) The crown
Ans. (d)

14. Which one of the following is the correct statement?
In a gusseted base, when the end of the column is machined for complete bearing on the base plate, the axial load is assumed to be transferred to the base plate
(a) Fully by direct bearing
(b) Fully through the fastenings
(c) 50% by direct bearing and 50% through fastenings
(d) 75% by direct bearing and 25% through fastenings
Ans. (c)

15. A tractor-trailer assembly has a gross weight of 25 tonnes. When moving over a level road, its rolling resistance is 42 kg per tonne. It is moved up a road of 5% grade. What is the required tractive effort?
(a) 1050.5kg
(b) 1060.5kg
(c) 1085kg
(d) 1102.5kg
Ans. (d)

16. Which one of the following shovel excavators is considered most efficient in loading
carriers?
(a) Dipper shovel
(b) Dragline
(c) Backhoe
(d) Clamshell
Ans. (c)

17. Bottom-dump wagons are suitable for handling which of the following?
(a) Wet sticky clay
(b) Sand and gravel
(c) Quarry rocks
(d) Any type of material
Ans. (b)

18. Vibratory rollers are more useful for compacting which of the following?
(a) Sandy soils
(b) Salty soils
(c) Clayey soils
(d) Mixed soils
Ans. (a)

19. The displacement method is also referred to as which one of the following?
(a) Minimum strain energy method
(b) Maxwell-Mohr method
(c) Consistent deformation method
(d) Slope-deflection method
Ans. (d)

20. A beam .carries a uniformly distributed load throughout its length. In which of the following configurations will the strain energy be maximum?
(a) Cantilever
(b) Simply supported beam
(c) Propped cantilever
(d) Fixed beam
Ans. (a)

21. Which one of the following statements is correct?
(a) In slope-deflection method, the forces are taken as unknowns
(b) In slope-deflection method, the joint rotations are taken as unknowns
(c) Slope-deflection method is not applicable for beams and frames having-settlement at supports
(d) Slope-deflection method is also known as force method
Ans. (b)

22. When the effect of wind or earthquake load is considered in the design of rivets and bolts for steel structures, by what percentage the permissible stresses may be exceeded?
(a) 15%
(b) 25%
(c) 33.33%
(d) 50%
Ans. (c)

23. The working range of a crane is limited horizontally for maximum lift only by
(a) Boom length
(b) Length of hoist cable
(c) Length of jib
(d) Counter weight
Ans. (c)

24. What is a tendon profile, in which the eccentricity is proportional to the bending moment caused by any loading on a rigidly supported indeterminate structure, at all cross-sections?
(a) Cable profile
(b) Resultant profile
(c) Concordant profile
(d) Reduced profile
Ans. (c)

25. When power shovels are operated under different site conditions (in terms of material handled), what is the correct sequence in the increasing order of the output for the following materials?
1. Well-blasted rock
2. Hard and tough clay
3. Poorly blasted rock
4. Moist loam or sane
Select the correct answer using the code given below:
Code:
(a) 1-2-3-4
(b) 1-4-3-2
(c) 4-2-3-1
(d) 4-3-1-2
Ans. (c)

26. For three-dimensional movement of a weight, which one of the following is most suitable?
(a) Chain hoist
(b) Winch
(c) Crane
(d) Jack
Ans. (c)

27. Match List-I with List-II and select the correct answer using the code given below the Lists:
List-I (Crane) List-II (Suitable for)
A. Tower crane 1. Hydraulic structures
B. Floating crane 2. High industrial plant
C. Mobile crane 3. Longitudinal and lateral movements of load
D. Gantry crane 4. Railway electrification
Code:
A B C D
(a) 2 1 4 3
(b) 3 4 1 2
(c) 2 4 1 3
(d) 3 1 4 2
Ans. (a)

28. How are concrete mixers specified?
(a) By the number of cement bags used in a batch
(b) By the nominal volume of concrete that can be mixed in a batch
(c) By the volume of water used
(d) By the volume of aggregate used
Ans. (b)

29. What is the minimum width of roadway for a six-lane high-level bridge constructed for the use of road traffic only?
(a) 21.5 m
(b) 22.5 m
(c) 24.0 m
(d) 25.5 m
Ans. (a)

30. Consider the following statements related to interchanges:
1. In diamond interchange there is the possibility of illegal wrong-way turns.
2. Diamond interchange is far superior to cloverleaf design.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither I nor 2
Ans. (a)

31. If a road surface is adequately supperelevated on horizontal curve, which one of the following is the proper distribution of pressure on the vehicle wheels?
(a) Pressure on both outer and inner wheels is equal
(b) Pressure on inner wheels is more than the outer wheels
(c) Pressure on inner wheels is less than the outer wheels
(d) Pressure on front wheels is thrice the pressure on rear wheels
Ans. (a)

32. Match List-I with List-II and select the correct answer using the code given below the lists:
List-I List-II
(Type of Construction) (Binder Content Generally Specified)
A: Bituminous macadam 1. 8—15%
B. Dense bituminous macadam 2. 3—15%
C. Bituminous concrete 3. 4—4.5%
D. Bitumen mastic 4. 4.5—6.0%
Code:
A B C D
(a) 2 1 4 3
(b) 4 3 2 1
(c) 2 3 4 1
(d) 4 1 2 3
Ans. (c)

33. If the mean temperature of Sun’s surface is 6000 K and λm of its radiation is 0.5 μm, what is the mean temperature of Earth’s surface for which λm is 10.0 μm, according to Wien’s Displacement Law in Remote Sensing Concept?
(a) 25°C
(b) 28°C
(c) 27°C
(d) 30°C
Ans. (c)

34. Match List-I with List-II and select the correct answer using the code given below the lists:
List-I (Term) List-II (Definition)
A. Apparent solar day 1. The time interval between two successive upper transits of the first point of Aries over the same meridian
B. Sidereal day 2. Time interval between two successive lower transits of the centre of the Sun across the same meridian
C. Tropical year 3. Time interval between two successive passages of the Sun over the meridian of any one of the fixed stars
D. Sidereal year 4. Time interval between two successive vernal equinoxes
Code:
A B C D
(a) 1 2 3 4
(b) 2 1 4 3
(c) 2 1 3 4
(d) 1 2 4 3
Ans. (b)

25. Which one of the following is the correct statement?
A streamlined body is one for which the
(a) Skin friction is zero.
(b) Thickness of the body is less than 1/100 of its length.
(c) Corners are rounded off.
(d) Separation occurs, if at all, at the farthest downstream part of the body
Ans. (d)

36. A flat plate with a sharp leading edge is placed along a free stream of fluid flow. Local Reynolds number at 3 cm from the leading edge is 105. What is the thickness of the boundary layer?
(a) 0.47mm
(b) 0.35 mm
(c) 0.23mm
(d) 0.12mm
Ans. (a)

37. During a flood in a stream of width 200 m (taken as rectangular section), the gauge reading was found to rise by 18 cm per hour. What would be the difference in discharges at two sections, each 250 m on either side of the gauge station?
(a) 10 m3/s less at downstream section
(b) 7.5 m3/s less at downstream section
(c) 5 m3/s less at downstream section
(d) 5 m3/s more at downstream section
Ans. (c)

38. If the stream function PHI = 3x3 — y3, what is the magnitude of velocity at point (2, 2)?
(a) 9
(b) 13
(c) 15
(d) 17
Ans. (d)

39. The weight of aggregate having specific gravity 2.65, completely filled into a cylinder of volume 0.003 m3 is 5.2 kg. What is the value of the angularity index of aggregate (approximately) as given by Murdock?
(a) 1
(b) 0.34
(c) 0.15
(d) 0.05
Ans. (b)

40. Which one of the following criteria is used for obtaining the value of modulus of subgrade reaction from plate bearing test data?
(a) Slope of pressure settlement graph
(b) Pressure corresponding to the settlement 1.25 mm
(c) Deflection corresponding to a pressure of 1.25 kg/ cm2
(d) Pressure corresponding to the settlement of 1.50 mm
Ans. (b)