| 1. | Dynamic similarity is said to exist between the model and the prototype, if both of them ? | |
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have identical velocities
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are equal in size and shape
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are identical in shape, but differ only in size
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none of the above
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Report Question| 2. | The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as ? | |
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manometric efficiency
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mechanical efficiency
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overall efficiency
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volumetric efficiency
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| 3. | Which of the following pump is generally used to pump highly viscous fluid ? | |
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Centrifugal pump
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Reciprocating pump
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Air lift pump
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Screw pump
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| 4. | In the above question, the saving in case of a double acting reciprocating pump is ? | |
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39.2 %
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48.8 %
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84.8 %
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88.4 %
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| 5. | Which of the following pump is successfully used for lifting water to the boilers ? | |
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Centrifugal pump
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Reciprocating pump
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Jet pump
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Air-lift pump
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| 6. | Kinematic similarity is said to exist between the model and the prototype, if both of them ? | |
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have identical velocities
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are equal in size and shape
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are identical in shape, but differ only in size
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have identical forces
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| 7. | For centrifugal pump impeller, the maximum value of the vane exit angle is ? | |
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10° to 15°
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15° to 20°
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20° to 25°
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25° to 30°
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| 8. | The maximum hydraulic efficiency of an impulse turbine is ? | |
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(1 + cos ?) / 2
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(1 - cos ?) / 2
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(1 + sin ?) / 2
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(1 - sin ?) / 2
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| 9. | The initial setting time of rapid hardening cement should not be less than ? | |
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30 min
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1 hour
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4 hours
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8 hours
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| 10. | The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as ? | |
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normal speed
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unit speed
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specific speed
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none of these
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