Civil Engineering - GATE Exam Questions

21. 

A test plate 30 cm x 30 cm resting on a sand deposit settles by 10 mm under a certain loading intensity. A footing 150 cm x 200 cm resting on the same sand deposit and loaded to the same load intensity settles by

A. 2.0 mm
B. 27.8 mm
C. 3.02 mm
D. 50.0 mm

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

22. 

Cavitation is caused by

A. high velocity
B. low pressure
C. high pressure
D. high temperature

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

23. 

Flow at critical depth takes place in an open channel When

A. for a given specific energy, discharge is maximum
B. for a given discharge, specific energy is maximum
C. discharge is minimum for a given specific energy
D. discharge is maximum for a given specific force

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

24. 

Two completely penetrating wells are located L (in metres) apart, in homogeneous confined aquifer. The drawdown measured at the mid point between the two wells (at a distance of 0.5 L from both the wells) is 2.0 m when only the first well is being pumped at the steady rate of Q1 m3/sec. When both the wells are being pumped at identical steady rate of Q2 m3/sec, the drawdown measured at the same location is 8, 0 m. It may be assumed that the drawdown at the wells always remains at 10.0 m when being pumped and the radius of influence is larger than 0.5 L Q1/Q2 is equal to

A. 8/5
B. 4/3
C. 5/8
D. ln (L/2)

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

25. 

A footing 2 m x 1 m exerts a uniform pressure of 150 kN/m2 on the soil. Assuming a load dispersion of 2 vertical to 1 horizontal the average vertical stress (kN/m2) at 1.0 m below the footing is

A. 50
B. 75
C. 80
D. 100

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.