Hydraulics problems
- 1. The best side slope for most economical trapezoidal section, is
Options- A. 30°
- B. 45°
- C. 60°
- D. None of these. Discuss
Correct Answer: 60°
- 2. In an open tube, free surface of mercury remains
Options- A. horizontal
- B. curved upwards
- C. curved downwards
- D. none of these. Discuss
Correct Answer: curved downwards
- 3. Back water curve is caused if
Options- A. friction head loss is more than the bed slope
- B. pressure is due to weir in the channel
- C. there is an increase in width of the channel
- D. none of these. Discuss
Correct Answer: pressure is due to weir in the channel
- 4. If total head available at the inlet of pipe and f1 is the loss of head due to friction in the pipe, the maximum efficiency of transmission of power (?max) is
Options- A. 1/2
- B. 2/3
- C. 3/4
- D. 4/5 Discuss
Correct Answer: 2/3
- 5. Manometers are used to measure
Options- A. pressure in water channels, pipes etc.
- B. difference in pressure at two points
- C. atmospheric pressure
- D. very low pressure. Discuss
Correct Answer: pressure in water channels, pipes etc.
- 6. Discharge over an ogee weir remains the same as that of
Options- A. sharp crested weir
- B. triangular weir
- C. cippoletti weir
- D. drowned weir. Discuss
Correct Answer: cippoletti weir
- 7. An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to
Options- A. 1.25%
- B. 1.5%
- C. 2.0%.
- D. 2.5% Discuss
Correct Answer: 2.5%
- 8. The following is not a laminar flow
Options- A. Flow of oil in measuring instruments
- B. Flow in beds in ground water
- C. Rise of water in plants through roots
- D. Flow of blood in the arteries of human body
- E. Flow in water pipe lines. Discuss
Correct Answer: Flow in water pipe lines.
- 9. Which one of the following equation is applicable to unsteady flow in open channels :
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 10. The magnitude of water hammer in a pipe depends upon
Options- A. speed at which value is closed
- B. length of the pipe line
- C. elastic properties of the pipe material
- D. elastic properties of the following liquid
- E. all the above. Discuss
Correct Answer: all the above.
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