Civil Engineering MCQ test

Civil Engineering MCQ test
Multiple choice questions Civil Engineering
Free MCQ Civil Engineering Practice test

1. Consider the following statements:

1. The hydraulic head at a point in the soil includes piezometric head as well as datum head.

2. Piping in soil occurs when effective pressure becomes equal to zero.

3. Piping in soil occurs when soil is highly porous.

Which of the above statements is/are correct?

A. 1, 2 and 3

B. 1 and 2 only

C. 2 and 3 only

D. 2 only

Ans: C

2. Considerable loss of shear due to shock for disturbance is orbited by

A. Under-consolidated clays -

B. Normally consolidated clays

C. Over-consolidated clays

D. Organic soil

Ans: A

3. Consider the following statements:

In aerial photogrammetry the ‘filter’ is placed in front of the lens to

1. reduce the effect of atmospheric haze. -

2. protect the lens from dust.

3. Provide uniform light distribution over the format.

Which of the above statements is/are correct?

A. 1 and 2 only

B. 2 only

C. 1 and 3 only

 D. 1, 2 and 3

Ans: A

4. A. partially open sluice gate is suddenly raised to its full opening. The resulting surge waves at the gate are

A. a positive wave travels towards, the gate from the upstream side while a negative wave travels downstream from the gate

B. a positive wave travels from the gate onto the upstream side while a positive wave travels downstream from the gate.

C. a negative wave travels from the gate or to the upstream side while a positive wave travels downstream from the gate

D. a negative wave travels towards the gate from the upstream side whereas a positive wave travels downstream from the gate

Ans: C

5. Consider the following statements; Apparent cohesion in sands is exhibited mainly due to

1. Reduction in density.

2. Increase in density.

3., Capillary moisture in pores.

Which of the above statements is/are correct?

A. 1, 2 and 3

B. 1 and 3 only

C. 2 and 3 only .

 D. 2 only

Ans: B

6. A catchment of area 200 ha has a runoff coefficient 0.5. A storm of duration larger than the time of concentration of the catchment and of intensity 3.6 cm/h causes a peak discharge (m³/s of

A. 5       

B.10

C.100    

D. 360

Ans: B

7 . Consider the following statements:

The coefficient of permeability k depends upon

1. . Void ratio of the soil.

2. Duration of flow.

3. Equivalent diameter of the soil grains.

4. Shape of the particle.

Which of the above statements are correct?

A. 1, 2, 3 and 4

B. 2 and 3 only

C. 1, 3 and 4 only

D. 3 and 4 only

Ans: C

8. Zigzag deposition and movement of sand on seabeach is called

A.Littoral drift   

B. Beach drift

C.Trough action               

D. Sedimentation

Ans: A

9.‘Iso-centre’ is the point

A. in which the tilted axis of the camera meets the vertical photograph

B. in which the bisector of the angle of tilt meets the vertical photograph

C. in air space, the location of the optical cer of the lens of the camera at the time’ of exposure

D. where the perpendicular from the nodal point meets the photograph

Ans: B

10. Calibration of a current meter which used in channel flow measurement done in a—

A. Wind tunnel

B. Water tunnel

C. Tank

D. None of these

Ans: C

11. A catchment consists of 30% area with runoff coefficient 0.40 with the remaining 70% area with runoff coefficient 0.60. The equivalent runoff coefficient will be

A.0.48  

B. 0.54

C.0.63   

D. 0.76

Ans: B

12. Ombrometer (pluviometer) is used to measure

A. Soil moisture stress of a plant

B. Rainfall depth

C. Leaf area

D. Root zone depth

Ans: B

13. Secondary clarifier of an activated sludge process must be designed for  effluent clarification and solids thickening, both of which relate directly to the

A. Surface area

B. Transport velocity due to sludge withdrawal

C. Gravity settling of solids relative to the water

D. Underflow solids concentration

Ans: B

14. Consider the following statements:

1. The yield of a retaining wall required to reach plastic equilibrium in active case is more than that in positive case.

2. Culman’s graphical method is a simplified version of the more general trial wedge method.

3. For a masonry gravity retaining wall Coulomb’s theory of earth pressure is preferred for designing.

Which of the above statements is/are correct?

A. 1, 2 and 3

B. 1 and 2 only

C. 2 and 3 only

D. 3 only

Ans: C

15. In the facultative pond systems, the aerobic  zone may get extended downwards due to

A. calm waters along with weak sunlight

B. mixing by wind action along with weak sunlight

C. mixing by wind action along with penetrations by sunlight

D. calm waters along with penetration by sunlight

Ans: C

16. The maximum height of a low gravity dam of elementary profile made of concrete of relative density 2.5 and safe allowable stress of foundation material 3.87 MPa without considering uplift force is about

A.113m

B. 217m

C.279m

D. 325 m

Ans: A

17. Consider the following statements:

1. Westergaard’s theory of stress distribution is more appropriate for soil deposits which exhibit large lateral strain.

2. Newmark’s influence chart can be used for the determination of vertical stress under any slope of a loaded area.

Which of the above statements is/are correct?

A.1 only               

B. 2 only

C. Both I and 2

D. Neither 1 nor 2

Ans: D

18. Consider the following devices as likely to concern with water hammer phenomenon in

their design/operation:

1. Hydraulic ram

2. Hydraulic accumulator

3. Penstock

4. Surge tank

5. Draft tube

Which of the above devices is/are so concerned?

A. 1,2,3,4 and 5

B. 1,3 and 4only

C. 2 and 3 only

D. 3 only

Ans: B

19. The wave height, in metres, generated on the surface of a reservoir, having a fetch length F = 30 km. due to wind blowing on the surface of the reservoir at a velocity of 30 km/hr. is

A.0.26 m             

B. 0.96 m

C.0.52 m              

D. 1.2 m

Ans: B

20. A ski-jump bucket is generally used as an energy dissipater  when the tail water

A. is greater than 1.1 times the required conjugate depth for the formation of hydraulic jump; and the river bed rock is ‘good’

B. depth is lesser than the depth required for the jump formation; and the bed of the river channel is composed of ‘sound’ rock

C. depth. is equal to the depth required for the jump formation, and the river bed rock is ‘good’

D. depth is 1.3 times the required for the jump formation, and the river bed is composed of ‘weak’ rock

Ans: B