Discussion
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- Question
If the pressure at the inlet of a pipe is 90 kg/cm2 and pressure drop over the pipe line is 10 kg/cm2, the efficiency of transmission, is
Options- A. 66.6%
- B. 77.7%
- C. 55.5%
- D. 88.8%.
- Correct Answer
- 88.8%.
- 1. The width of a weir with end contraction, is
Options- A. equal to the width of the channel
- B. less than the width of the channel
- C. half the width of the channel
- D. none of these. Discuss
- 2. The flow in open channel is said to be subcritical if the Froude number is
Options- A. less than 1.0
- B. equal to 1.0
- C. greater than 1.0
- D. none. Discuss
- 3. Pick up the incorrect statement from to following regarding triangular notch :
Options- A. For measuring low discharge, it gives more accurate result
- B. Only one reading (i.e. H) is required for computation of discharge
- C. Ventilation is necessary
- D. None of these. Discuss
- 4. For the two dimensional flow, the stream function is given by ? = 2xy. The velocity at a point (3, 4) is
Options- A. 6 m/sec
- B. 8 m/sec
- C. 10 m/sec
- D. 12 m/sec
- E. 15 m/sec. Discuss
- 5. The ratio of the percentage error in the discharge and percentage error in the measurement of head, over rectangular notch, is
Options- A. 1/2
- B. 2/3
- C. 3/2
- D. 3/4 Discuss
- 6. Centre of buoyancy is
Options- A. centroid of the floating body
- B. centroid of the fluid displaced
- C. centre of pressure of the displaced liquid
- D. none of these. Discuss
- 7. Total energy line is
Options- A. pressure head
- B. datum head
- C. kinetic head
- D. All the above. Discuss
- 8. A body of dimensions 1.5 m x 1.0 m x 2 m weighs 3000 kg in water. Its specific gravity is
Options- A. 0.8
- B. 0.9
- C. 1.0
- D. 1.1 Discuss
- 9. An orifice is called a large orifice if water head, is
Options- A. twice the diameter of the orifice
- B. thrice the diameter of the orifice
- C. four times the diameter of the orifice
- D. five times the diameter of the orifice. Discuss
- 10. In a two dimensional flow if the components of the velocity are u = ax ; v = by, the point where no motion occurs, is known as
Options- A. critical point
- B. neutral point
- C. stagnation point
- D. stationary point
- E. none of these. Discuss
Hydraulics problems
Search Results
Correct Answer: less than the width of the channel
Correct Answer: less than 1.0
Correct Answer: Ventilation is necessary
Correct Answer: 10 m/sec
Correct Answer: 3/2
Correct Answer: centroid of the fluid displaced
Correct Answer: All the above.
Correct Answer: 1.1
Correct Answer: five times the diameter of the orifice.
Correct Answer: stagnation point
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