Fluid Mechanics

241.Gradually varying fluid flow is an example of _________ flow.

1. Non-steady uniform
2. Non-steady non-uniform
3. Steady uniform
4. Steady non-uniform

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242.Head developed by a centrifugal pump depends on its

1. Speed
2. Impeller diameter
3. Both (A) and (B)
4. Neither (A) nor (B)

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243.High specific speed of a pump implies that, it is a/an _________ pump.

1. Centrifugal
2. Mixed flow
3. Axial flow
4. None of these

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244.Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of _________ flow type.

1. Axial
2. Radial
3. Mixed
4. None of these

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245.Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will _________ the gas discharge pressure.

1. Increase
2. Decrease
3. Not change
4. Exponentially decrease

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246.Horsepower requirement for given pump capacity depends upon the

1. Specific gravity of the liquid
2. Suction lift
3. Discharge head
4. All (A), (B) and (C)

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247.Hot wire anemometer is used to measure the

1. Velocity of liquids
2. Temperature of liquids
3. Velocity of gases
4. Pressure of liquids

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248.Hydraulic _________ works on the principle of Pascal's law of transmission of fluid pressure.

1. Press
2. Turbine
3. Pump
4. Coupling

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249.Hydraulic diameter for non-circular ducts is equal to _________ times the area of flow divided by the perimeter.

1. Two
2. Three
3. Four
4. Eight

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250.Hydraulic intensifier is used for increasing the

1. Rate of velocity of liquid supply
2. Rate of flow through delivery pipeline of a pump
3. Intensity of pressure of the liquid
4. Momentum rate through delivery pipe

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