Discussion
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- Question
Which of the following pump is generally used to pump highly viscous fluid?
Options- A. Centrifugal pump
- B. Reciprocating pump
- C. Air lift pump
- D. Screw pump
- Correct Answer
- Screw pump
- 1. The power developed by a turbine is (where H = Head of water under which the turbine is working)
Options- A. directly proportional to H1/2
- B. inversely proportional to H1/2
- C. directly proportional to H3/2
- D. inversely proportional to H3/2 Discuss
- 2. The working of which of the following hydraulic units is based on Pascal's law?
Options- A. Air lift pump
- B. Jet pump
- C. Hydraulic coupling
- D. Hydraulic press Discuss
- 3. The ratio of the lateral strain to the linear strain is called
Options- A. modulus of elasticity
- B. modulus of rigidity
- C. bulk modulus
- D. Poisson's ratio Discuss
- 4. In a leaf spring, the length of all the leaves are equal.
Options- A. True
- B. False Discuss
- 5. The extension of a circular bar tapering uniformly from diameter d1 at one end to diameter d2 at the other end, and subjected to an axial pull of P is __________ the extension of a circular bar of diameter d1 d2 subjected to the same load P.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 6. A Pelton wheel working under a constant head and discharge, has maximum efficiency when the speed ratio is
Options- A. 0.26
- B. 0.36
- C. 0, 46
- D. 0.56 Discuss
- 7. The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship, will be maximum when the relative velocity of the jet and ship is equal to twice the velocity of the ship.
Options- A. Yes
- B. No Discuss
- 8. The flow ratio of Francis turbine is defined as the ratio of the
Options- A. velocity of flow at inlet to the theoretical jet velocity
- B. theoretical velocity of jet to the velocity of flow at inlet
- C. velocity of runner at inlet to the velocity of flow at inlet
- D. none of the above Discuss
- 9. A draft tube is used with impulse turbines.
Options- A. Yes
- B. No Discuss
- 10. The discharge through a reaction turbine __________ with the increase in unit speed.
Options- A. remains same
- B. increases
- C. decreases Discuss
Hydraulic Machines problems
Search Results
Correct Answer: directly proportional to H3/2
Correct Answer: Hydraulic press
Correct Answer: Poisson's ratio
Correct Answer: False
Correct Answer: equal to
Correct Answer: 0, 46
Correct Answer: Yes
Correct Answer: velocity of flow at inlet to the theoretical jet velocity
Correct Answer: No
Correct Answer: decreases
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