| 1. | In case of depressed nappe the pressure of air below the nappe is ? | |
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equal to atmospheric
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less than atmospheric
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more than atmospheric
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None of these
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View Answer
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Report Question| 2. | The type of turbine recommended for a head of 10 m is ? | |
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Francis turbine
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Kaplan
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Pelton wheel
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None of these
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| 3. | The head of water required for Pelton wheel is ? | |
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low
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medium
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high
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None of these
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| 4. | When can a piezometer not be used for pressure measurement in pipes ? | |
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The pressure difference is low
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The velocity is high
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The fluid in the pipe is highly viscous
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The fluid in the pipe is a gas
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| 5. | During the opening of a valve in a pipe line, the flow is ? | |
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steady
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unsteady
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uniform
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laminar
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| 6. | Flow occurring in a pipeline when a valve is being opened is ? | |
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steady
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unsteady
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laminar
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vortex
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| 7. | The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to ? | |
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1 Pa
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98.1 Pa
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981 Pa
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9810 Pa
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| 8. | The efficiency of a centrifugal pump is maximum when its blades are ? | |
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straight
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bent forward
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bent backward
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bent forward first, and then backward
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| 9. | Indicator diagram of a reciprocating pump is a graph between ? | |
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flow vs swept volume
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pressure in cylinder vs swept volume
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flow vs speed
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pressure vs speed
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| 10. | An impulse turbine ? | |
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operates submerged
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requires draft tube
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is most suited for low head applications
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operates by initial complete conversion to kinetic energy
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