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GATE Latest Exam Pattern - GATE Sample Question with Solutions Page 6

(#M40156949) GATE QUESTION Engineering HM Keep an EYE

The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as


A. normal speed
B. unit speed
C. specific speed
D. none of these

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(#M40156947) GATE QUESTION Engineering HM Keep an EYE

In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.


A. True
B. False

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(#M40156946) GATE QUESTION Engineering HM Keep an EYE

The principle of jet propulsion is used in driving the ships and aeroplanes.


A. Correct
B. Incorrect

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(#M40156945) GATE QUESTION Engineering HM Keep an EYE

A hydraulic coupling belongs to the category of


A. power absorbing machines
B. power developing machines
C. energy transfer machines
D. energy generating machines

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(#M40156944) GATE QUESTION Engineering HM Keep an EYE

The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is


A. slow speed with radial flow at outlet
B. medium speed with radial flow at outlet
C. high speed with radial flow at outlet
D. high speed with axial flow at outlet

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(#M40156943) GATE QUESTION Engineering HM Keep an EYE

A Francis turbine is used when the available head of water is


A. 0 to 25 m
B. 25 m to 250 m
C. above 250 m
D. none of these

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(#M40156942) GATE QUESTION Engineering HM Keep an EYE

When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.


A. Agree
B. Disagree

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(#M40156941) GATE QUESTION Engineering HM Keep an EYE

A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the


A. kinetic head
B. velocity head
C. manometric head
D. static head

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(#M40156940) GATE QUESTION Engineering HM Keep an EYE

In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.


A. True
B. False

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(#M40156939) GATE QUESTION Engineering HM Keep an EYE

The maximum number of jets, generally, employed in an impulse turbine without jet interference are


A. two
B. four
C. six
D. eight

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