HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

The maximum discharge over a broad crested weir is

0.384 Cd × L × H1/2

1.71 Cd × L × H3/2

1.71 Cd × L × H1/2

0.384 Cd × L × H3/2

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Which of the following pump is successfully used for lifting water to the turbines?

Jet pump

Centrifugal pump

Air lift pump

Reciprocating pump

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Francis turbine is best suited for

Medium head application from 24 to 180 m

High head installation above 180 m

Low head installation up to 30 m

All types of heads

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According to fan laws, at constant pressure, the speed capacity and power vary

As square of density

Inversely as square root of density

Inversely as density

Directly as the air or gas density

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Which of the following is dimensionless?

Specific volume

Specific weight

Specific gravity

Specific speed

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The maximum number of jets generally employed in impulse turbine without jet interference is

4

6

12

8

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Slip of a reciprocating pump is defined as the

Product of theoretical discharge and the actual discharge

Difference of theoretical discharge and the actual discharge

Sum of actual discharge and the theoretical discharge

Ratio of actual discharge to the theoretical discharge

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The overall efficiency for a Pelton wheel lies between

0.85 to 0.90

0.75 to 0.85

0.65 to 0.75

0.50 to 0.65

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If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.

None of these

Dynamic similarity

Geometric similarity

Kinematic similarity

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The depth of the bucket for a Pelton wheel is generally _________ the diameter of jet.

Double

Equal to

1.8 times

1.2 times

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