Civil Engineering - UPSC Civil Service Exam Questions MCQs Part 14

1. Bricks are burnt at a temperature range of

A.
500° to 700°C

B.
700° to 900°C

C.
900° to 1200°C

D.
1200° to 1500°C

 Answer Option C

2. Drop panel is a structural component in :

A.
grid floor

B.
flat plate

C.
flat slab

D.
slab-beam system of floor

 Answer Option C

3. A ship is berthed in a chamber and lifted by principles of buoyancy. Such a chmber is called

A.
Dry dock

B.
Web dock

C.
Floating dock

D.
Refuge dock

 Answer Option C

4. Which one of the following pairs is not correctly matched ?

A.
Check valve - To check water flow in all directions

B.
Sluice valve - To control flow of water through pipe lines

C.
Air valve - To release the accumulated air

D.
Scour valve - To remove silt in a pipe line

 Answer Option A

5. The following refer to the stability analysis of an earth dam under different conditions :1. Stability of D/S slope during steady seepage.2. Stability of U/S slope during sudden drawdown.3. Stability of U/S and D/S slopes during construction.Of these statements :

A.
1 and 2 are correct

B.
1 and 3 are correct

C.
2 and 3 are correct

D.
1, 2 and 3 are correct

 Answer Option C

6. A bar AB, 4 cm is diameter and 4 m long is rigidly fixed at its ends. A torque of 12000 kg/cm is applied at a section of the bar, one metre from end A. The fixing coupled TA and TB (in kg. cm) at the supports A and B will be respectively

A. 9000, 6000

B. 3000, 9000

C. 6000, 9000

D. 9000, 3000

 Answer Option D

7. Consider the following assumptions of Bowditch method :1. Angular measurements are more precise than linear measurements.2. Linear measurements are more prescise than angular measurements.3. Erros in linear measurements are proportional to L.4. Correction to latitude or departure of any side = Total error in L (or D) x Length of that side / Perimeter of traverse.Which of these statements are correct ?

A. 1 and 4

B. 1, 2 and 3

C. 2, 3 and 4

D. 3 and 4

 Answer Option A

8. For the beam shown in the given figure, the collapse load P is given by

A.

B.

C.

D.

 Answer Option D

9. For a laminated spring, l = length, n = number of plates, width of each plate = b, thickness of each plate = t, central point load = W, what is the expression for the maximum bending stores ?

A. * 2

B.

C.

D.

 Answer Option D

10. Two particles of masses 21 gm and 28 gm are connected by a light inextensible string which passes over a fixed smooth pulley. The tension in the string in the ensuing motion will be

A. 7 gm. wt

B. 10 gm. wt

C. 12 gm. wt

D. 24 gm. wt

 Answer Option D

11. Which of the following measures are resorted to for strengthening masonry walls ?1. Provide cross walls.2. Pre-stressing.3. Provide gunite slab on the surface(s) of walls.4. Provide buttresses.Select the correct answer using the code given below :

A. 1, 3 and 4

B. 1 and 2

C. 2 and 3

D. 1, 2, 3 and 4

 Answer Option A

12. Which one of the following surveys is employed for collecting sufficient data in connection with sewage disposal and water supply works ?

A. Topographic survey

B. Cadastral survey

C. Geodetic survey

D. Cross-sectioning and profile levelling

 Answer Option D

13. Cost-benefit studies are essential to

A. assess the total cost of the work

B. ascertain the relevant escalation in prices

C. monitor the expenditure

D. evaluate the viability and worthwhileness of taking up the project

 Answer Option D

14. What is the value of flexural strength of M 25 concrete ?

A. 4.0 MPa

B. 3.5 MPa

C. 3.0 MPa

D. 1.75 MPa

 Answer Option B

15. The correct sequence of the increasing order of the disturbance to soil samples obtained from chunk, piston, split spoon and remolded sampler is

A. piston sampler, chunk sampler, split spoon sampler, remolded sampler

B. chunk sampler, piston sampler, split spoon sampler, remolded sampler

C. piston sampler, chunk sampler, remolded sampler, split spoon sampler

D. chunk sampler, piston sampler, remolded sampler, split spoon sampler

 Answer Option A

16. In an external focusing tachometer, the fixed interval between static hairs is 5 mm, the focal length of the objective is 25 cm, and the distance of the vertical axis of the instrument from the optical centre of the objective is 15 cm. Which one of the following is the set of constant of the tachometer ?

A. 30, 0.15

B. 30, 0.40

C. 50, 0.25

D. 50, 0.40

 Answer Option D

17. Which one of the following treatments is economically effective in the control of guinea worm disease ?

A. Chlorination

B. Filtration

C. Ozonation

D. Sedimentation

 Answer Option B

18. Which of the following data would be required for the design of progressive type computerised traffic signal system in a series of intersection on a busy street ?1. Volume of fast moving traffic 2. Volume of pedestrain traffic3. Volume of slow traffic 4. Approach speed of fast moving traffic.Select the correct answer using the codes given below :

A. 1, 2, 4 and 5

B. 1, 2, 3 and 4

C. 2, 3, and 5

D. 1, 3, 4 and 5

 Answer Option B

19. A sailor, standing on the deck of a ship, just sees the light beam from a lighthouse on the shore. If the height of the sailor's eye and of the light beam at the lighthouse, above the sea level, are 9 m and 25 m respectively, what is the distance between the sailor and the lighthouse ?

A. 29.8 km

B. 31.1 km

C. 31.9 km

D. 33.2 km

 Answer Option B

20. The displacement of a particle undergoing rectilinear motion along the x-axis is given by x = 2t3- 21t2 + 60t + 6 (m)The acceleration of the particle when its velocity is zero, is

A. 36 m/s2

B. ± 18 m/s2

C. 9 m/s2

D. - 9 m/s2

 Answer Option B

21. In a circular sewer of diameter D, if the depth of flow is D/4, what is the wetted perimeter equal to ?

A. πD/4

B. πD/2

C. πD/3

D. 2πD/3

 Answer Option C

22. The standard time meridian in India is 82°30'E. If the standard time at any instant is 20 hours 10 minutes, the local mean time for the place at a longitude of 20°E would be

A. 4h PM

B. 4h 10m PM

C. lh 20m PM

D. 0h 20m AM

 Answer Option A

23. With a vertical point load on the surface when considering the vertical plane passing through the load, the stress gets reduced by 52.3% at a depth of

A. 0.25 of unit length

B. 0.5 of unit length

C. 0.75 of unit length

D. 1 of unit length

 Answer Option C

24. Consider the following statementsThe main reinforcement in the counterfort in a counterfort retaining wall of R.C.C is provided on the :1. inclined face in front of counterfort.2. bottom face in. back counterfort.3. inclined face in back counterfort.4. bottom face in front counterfort.Select the correct answer using the codes given below :

A. 1 and 2

B. 2 and 3

C. 3 and 4

D. 2 and 4

 Answer Option C

25. In a free vortex, velocity

A. decreases with radius

B. increases with radius

C. is constant

D. varies inversely as the square of the radius

 Answer Option A

26. In the schematic flownet shown in the given figure the hydraulic potential at point A is

A. 5 m of water

B. 12 m of water

C. 15 m of water

D. 25 m of water

 Answer Option B

27. A 4-hour rainfall in a catchment of 250 km2 produces rainfall depths of 6.2 cm and 5.0 cm in successive 2-hour unit periods. Assuming the φ index of the soil to be 1.2 cm/hour, the run-off volume in ha-m will be

A. 16

B. 22

C. 1600

D. 2200

 Answer Option C

28. Consider the following statements :The critical path in a network plan of a project1. helps in planning efficient time schedule2. indicates the shortest path in time3. helps in crashing the project judiciously4. helps in encouraging discipline in execution.Of these statements :

A. 1, 3 and 4 are correct

B. 1, 2, 3 and 4 are correct

C. 1 and 4 are correct

D. 2 and 3 are correct

 Answer Option A

29. Which of the following pairs are correctly matched ?1. Alpha iron....non magnetic2. Beta iron....strongly magnetic3. Gamma iron....non-magnetic and capable of dissolving carbon.4. Delta iron....non-magnetic and absorbs very little carbon.Select the correct answer using the codes given below :

A. 3 and 4

B. 1 and 2

C. 1, 3 and 4

D. 2 and 4

 Answer Option A

30. The height of a hydraulic jump in a stilling pool was found to be 10 cm in a model with lp/lm = 36. The prototype jump height would be

A. 0.6 m

B. 3.6 m

C. 21.6m

D. indeterminable for want of adequate data

 Answer Option B

31. If the stress on the cross-section of a circular short column of diameter D is to be wholly compressive, the load should be applied within a concentric circle of diameter

A. D/2

B. D/8

C. D/4

D. D/6

 Answer Option C

32. What does higher standard deviation imply in cost analysis ?

A. Higher uncertainty

B. Lower uncertainty

C. Nothing to do with uncertainty

D. Extra costs are likely

 Answer Option D

33. Consider the following statements :The disease of dry not in timber is caused by :1. complete submergence in water.2. alternate wet and dry condition.3. lack of ventilation.Which of the statements given above is/are correct ?

A. 1 only

B. 3 only

C. 2 only

D. 2 and 3

 Answer Option B

34. A section of a flitched beam is shown in the given figure. The main role of the steel plate placed between the two timber sections is to

A. increase the axial resistance of the section

B. increase and density

C. increase shear and bending resistance of the section

D. avoid development of shear stress in the two timber sections

 Answer Option C

35. A velocity field with no components in the y and z directions is given by V = 6 + 2xy +t2The acceleration along the x-direction at a point (3, 1, 2), at time 2, is

A. 8 units

B. 16 units

C. 28 units

D. 36 units

 Answer Option D

36. For stream function ψ = 3x2 - y3, the magnitude of velocity at the point (2, 1) is

A. 12.37

B. 12

C. 13

D. 13.5

 Answer Option A

37. Consider the following statements about provision of sag rods :1. Sag rods reduce span length of purlin in the weak direction.2. Sag rods are installed in the plane of the roof.3. Ridge purlin is subject to vertical components of sag rods on either side of slope.Which of the statements given above are correct ?

A. 1, 2 and 3

B. 2 and 3

C. 1 and 2

D. 1 and 3

 Answer Option A

38. The smallest scale adopted for topographical surveys is

A. 1 : 25, 000

B. 1 : 50, 000

C. 1 : 2, 50, 000

D. 1 : 5, 00, 000

 Answer Option A

39. A shot of mass m penetrates a thickness t of a fixed plate of mass M. If the plate were free to move and the resistance supposed to be uniform, which one of the following is the thickness penetrated ?

A.

B.

C.

D.

 Answer Option A

40. Which one of the following gives the number of gate position in an airport ?

A.

B.

C.

D.

 Answer Option A

41. During the measurement of a line by chain or tape in slopes, if the length of the line is 'l' and the height difference between the ends of the line is 'h', then the correction to the measured length is more than by

A. zero

B.

C.

D.

 Answer Option B

42. Which one of the following represents the correct relationship between seepage pressure (ps), unit weight of water (γω) and hydraulic gradient (i), inside an earth dam ?

A. ps = i/γω

B. ps = i.γω

C. ps = i2.γω

D. ps = γω/i

 Answer Option B

43. Consider the following factors :1. Large number of loading cycles 2. Large variations in stress3. Large stress concentration. Those associated with fatigue would include

A. 1 and 2

B. 1 and 3

C. 2 and 3

D. 1, 2 and 3

 Answer Option A

44. As per I.S. 1904-1986 the permissible angular distortion with respect to steel sructures in isolated foundations resting on plastic clay is

A.

B.

C.

D.

 Answer Option C

45. Which one of the following statements about photogrammetric surveying is correct ? The relief displacement

A. decreases with increase in flying height

B. in negative for a point above datum

C. decreases as the distance of the object from the principal point increases

D. of the point is not affected by the tilt of the photograph.

 Answer Option A

46. A soil has liquid limit of 60%, plastic limit of 35% and shrinkage limit of 20% and it has a natural moisture content of 50%. The liquidity index of soil is

A. 1.5

B. 1.25

C. 0.6

D. 0.4

 Answer Option C

47. Which of the following statements about design period are true ?1. It is concerned with economy of investment.2. It takes into account aspects like life of durability and ease or difficulty of capacity increase of installations.3. It considers the frequency of occurrence of extremes of river flow.4. It is concerned with estimating future requirements.Select the correct answer using the codes given below :

A. 1, 2, 3 and 4

B. 2 and 3

C. 1, 2 and 4

D. 1, 3 and 4

 Answer Option C

48. Gypsum is used as an admixture in cement grouts for

A. accelerating the setting time

B. retarding the setting time

C. increasing the plasticity

D. reducing the grout shrinkage

 Answer Option B

49. A sand deposit has a porosity of 0.375 and a specific gravity of 2.6, the critical hydraulic gradient for the sand deposit is

A. 2.975

B. 2.225

C. 1

D. 0.75

 Answer Option C

50. If the actual observed value of standard penetration resistance, N is greater than 15 in a fine sand layer below water table, then the equivalent penetration resistance will be

A.

B.

C.

D.

 Answer Option C