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(#M40156972) GATE QUESTION Mechanical Engineering HM Keep an EYE

The overall efficiency of an impulse turbine is the ratio of the actual power produced by the turbine to the energy actually supplied by the turbine.


A. Yes
B. No

Asked In Gate Jaspalsingh Parmar (9 years ago)

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(#M40156971) GATE QUESTION Mechanical Engineering HM Keep an EYE

Which of the following pump is generally used to pump highly viscous fluid?


A. Centrifugal pump
B. Reciprocating pump
C. Air lift pump
D. Screw pump

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(#M40156970) GATE QUESTION Mechanical Engineering HM Keep an EYE

A Pelton wheel with one nozzle is preferred for a specific speed between 35 to 60 r.p.m.


A. True
B. False

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(#M40156969) GATE QUESTION Engineering HM Keep an EYE

In a mixed flow reaction turbine, the flow of water is partly radial and partly axial.


A. Correct
B. Incorrect

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(#M40156968) GATE QUESTION Engineering HM Keep an EYE

The discharge through a reaction turbine __________ with the increase in unit speed.


A. remains same
B. increases
C. decreases

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(#M40156967) GATE QUESTION Engineering HM Keep an EYE

A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.


A. Correct
B. Incorrect

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(#M40156966) GATE QUESTION Engineering HM Keep an EYE

In order to avoid cavitation in centrifugal pumps


A. the suction pressure should be high
B. the delivery pressure should be high
C. the suction pressure should be low
D. the delivery pressure should be low

Asked In Gate Jaspalsingh Parmar (9 years ago)

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(#M40156965) GATE QUESTION Engineering HM Keep an EYE

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


A. Air lift pump
B. Jet pump
C. Hydraulic coupling
D. Hydraulic press

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(#M40156964) GATE QUESTION Engineering HM Keep an EYE

In an inward flow reaction turbine


A. the water flows parallel to the axis of the wheel
B. the water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
C. the water enters the wheel at the outer periphery and then flows towards the centre of the wheel
D. the flow of water is partly radial and partly axial

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(#M40156963) GATE QUESTION Engineering HM Keep an EYE

Overall efficiency of a centrifugal pump is the ratio of


A. energy available at the impeller to the energy supplied to the pump by the prime mover
B. actual workdone by the pump to the energy supplied to the pump by the prime mover
C. energy supplied to the pump to the energy available at the impeller
D. manometric head to the energy supplied by the impeller per kN of water

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