HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?

The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum

The pressure on the bottom of the wall is maximum

The pressure on the bottom of the wall is zero

The pressure on the wall at the liquid level is minimum

TRUE ANSWER : ?
YOUR ANSWER : ?

The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)

2gH

2g × √H

H × √(2g)

√(2gh)

TRUE ANSWER : ?
YOUR ANSWER : ?

For centrifugal pump impeller, the maximum value of the vane exit angle is

25° to 30°

10° to 15°

15° to 20°

20° to 25°

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YOUR ANSWER : ?

The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)

(1 - cos φ)/2

(1 - sin φ)/2

(1 + cos φ)/2

(1 + sin φ)/2

TRUE ANSWER : ?
YOUR ANSWER : ?

The working of which of the following hydraulic units is based on Pascal's law?

Hydraulic press

Jet pump

Hydraulic coupling

Air lift pump

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If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is

43892

43924

44078

27/8

TRUE ANSWER : ?
YOUR ANSWER : ?

A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc

1000 kg

10 kg

100 kg

1 kg

TRUE ANSWER : ?
YOUR ANSWER : ?

The pressure of fluid due to hammer blow is

Directly proportional to (density)1/2 of fluid

Inversely proportional to density of fluid

Inversely proportional to (density)1/2 of fluid

Directly proportional to density of fluid

TRUE ANSWER : ?
YOUR ANSWER : ?

High specific speed of turbine implies it is

Francis turbine

Impulse turbine

Propeller turbine

None of the listed here

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Which of the following pump is preferred for flood control and irrigation applications?

Axial flow pump

Mixed flow pump

Centrifugal pump

Reciprocating pump

TRUE ANSWER : ?
YOUR ANSWER : ?

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