civil engineering MCQ

civil engineering MCQ
Free Free Mcqs For Civil Engineering
Solved multiple choice question of Civil Engineering
1. Consider the following statements:
1. The minimum value of group index for a soil be taken as zero.
2. The maximum possible value of group index for a soil is twenty.
Which of the above statement is/are correct?
A. Both 1 and 2
B. 1 only
C. 2 only ,
D. Neither 1 nor 2

Ans : A

2. A light-house is visible just above the horizon at a certain station at the sea level. Distance between the station and the lighthouse is 60 km. The height of the lighthouse is
A 243.5 m
B. 4.0 m
C. 287.4 m
D. 5.4 m

Ans : A

3. Consider the following statements:
The disadvantages of employing steel pipes in conveyance and distribution of water are, they
1. cannot withstand high negative pressures or vacuums that may be created in them, especially the combined’ effects of vacuum and external loads of backfill and traffic..
2. are easily affected by acidic or alkaline waters and even atmospheric agencies may produce adverse effects on them.
3. cannot be used for high pressures. (Generally not used for pressures above 7 kg/cm2)
Which of the above statements is/are correct?
A 1, 2 and 3
B. 1 and 2 only
C. 2 and 3 only
D. 1 only

Ans : B


4. Consider the following statements:
The moment of momentum equation in fluid dynamics can be used
1. To find the torque exerted on sprinklers by water.
2. To determine the force in a flow passage, when stream changes direction/ magnitude.
Which of the above statements is/are correct?
A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2

Ans : C


5. Garret’s diagrams are used to ?
A separate base flow from total runoff
B. correct inconsistency in rainfall data
C. determine reservoir capacity
D. design channels

Ans : D



6. Consider the following statements: The critical value of Reynolds number at which the boundary layer changes from laminar to turbulent depends upon
1. Turbulence in ambient flow
2. Surface roughness.
Which of the above statements is/are correct?
A. Neither 1 nor 2
B. 1 only
C. 2 only
D. Both 1 and 2

Ans : D


7. In a transit theodolite, error due to eccentricity of verniers is eliminated by reading
A both verniers
B. both right swing and left swing
C. right and left faces
D. different parts of main scale

Ans : A


8. An airplane is cruising at a speed of 800 km/ h at an. altitude where the air temperature is 0°C. The flight Mach number at this speed is nearly
A. 1.3
B. 0.67
C. 0.25
D. 2.4

Ans : B


9. Light reflecting devices used to guide the driver along the proper alignment are called A Rumble strips
B. Delineators
C. Attenuators
D. Litter bin

Ans : B


10. Consider the following statements:
In reciprocating pumps, the air vessels are used
1. To get continuous supply of liquid at a uniform rate.
2. To save the power required to drive the pump.
3. To run at much higher speed without any danger of separation



Which of the above statements are correct?
A. 1 and 2 only
B. 2 and 3 only
C. 1, 2 and 3
D. 2 and 3 only

Ans : C


11. Consider the following statements:
1. For a well graded sand, the coefficient of curvature should lie between 1 and 3.
2. A soil having uniformity coefficient smaller than about 2.0 is considered uniform.
Which of the above statements is/are correct?
A. Both 1 and 2
B. Neither 1 nor 2
C. 1 only
D. 2 only

Ans : A




12. A homogeneous earth dam is 43 m high with 3 m as free board and a 30 m long horizontal filter at the downstream end. The flownet drawn in the dam section consists of 5 flow channels and 15 potential drops. If the dam is 500 m long and the permeability of thc material of the dam is uniformly 3 x 10-3 m/s, the total discharge permeating through the body of the dam will be
A. 0.0004 m3/s
B. 0.0036 m3/s
C. 0.0039 m3/s
D. 0.20 m3/s

Ans : D


13. With a bit rate of 50 bps and a cycle time of 30 seconds, the total information content of a navigation data set is
A. 80 bits
B. 20 bits
C. 100 bits
D. 1500 bits

Ans : D


14. In a pipe network of municipal water supply, a parallel pipe is sometimes installed over a portion of the pipe mainly for ?
A. reducing water hammer pressure
B. decreasing the pumping power need
C. increasing the head available at’ the node
D. increasing the discharge

Ans : D


15. The discharge required for Rabi and Kharif crops are 0.4 m3/s and 0.3 m3/s respectively. The capacity and time factors are 0.8 and 0.5 respectively at each session. The design discharge of the distributary at its head is
A. 0.8 m3/s
B. 0.16 m3/s
C. 1.0 m3/s
D. 1.24 m3/s

Ans : C