Hydraulics problems
- 1. The velocity of the fluid particle at the centre of the pipe section, is
Options- A. minimum
- B. maximum
- C. equal throughout
- D. none of these. Discuss
Correct Answer: maximum
- 2. Due to decrease of diameter of the droplet, inside pressure intensity
Options- A. increases
- B. decreases
- C. remains unaffected
- D. None of these. Discuss
Correct Answer: increases
- 3. The main assumption of Bernoulli's equation is :
Options- A. The velocity of energy of liquid particle, across any cross-section of a pipe is uniform
- B. No external force except the gravity acts on the liquid
- C. There is no loss of energy of the liquid while flowing
- D. All the above. Discuss
Correct Answer: All the above.
- 4. The terminal velocity (v) of a sphere of radius r and specific weight W, which travels vertically downwards in a liquid of viscosity ? and specific weight W, is
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 5. The valve closure is said to be sudden if
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 6. The ratio of the inertia and gravitational force acting in any flow, ignoring other forces, is called
Options- A. Euler number
- B. Frode number
- C. Reynold number
- D. Weber number. Discuss
Correct Answer: Frode number
- 7. A rectangular channel 6 m wide and 3 m deep and having a bed slope as 1 in 2000 is running full. If Chezy's constant C = 54.8, pick up the correct specification of the channel from the following :
Options- A. hydraulic mean depth = 1.5 m
- B. Velocity of flow = 1.5 m/sec
- C. Rate of flow = 27 m3/sec
- D. All the above. Discuss
Correct Answer: All the above.
- 8. For most economical rectangular section of a channel, the depth is kept
Options- A. one-fourth of the width
- B. three times the hydraulic radius
- C. half the width
- D. hydraulic mean depth
- E. none of these. Discuss
Correct Answer: half the width
- 9. Hydraulic ram is a device
Options- A. for lifting water without an electric motor
- B. for accelerating water flow
- C. for lifting heavy loads
- D. none of these. Discuss
Correct Answer: for lifting water without an electric motor
- 10. When water flows over a rectangular suppressed weir, the negative pressure created beneath the nappe
Options- A. increases the discharge
- B. decreases the discharge
- C. does not effect the discharge
- D. none of these. Discuss
Correct Answer: increases the discharge
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