Compressors MCQs | Page - 1

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Shivam • 8.86K Points
Tutor III

Q. 1 m of air at atmospheric condition weighs approximately

(A) 0.5 kg
(B) 1.0 kg
(C) 1.3 kg
(D) 2.2 kg
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Shivam • 8.86K Points
Tutor III

Q. A centrifugal compressor works on the principle of

(A) conversion of pressure energy into kinetic energy
(B) conversion of kinetic energy into pres¬sure energy
(C) centripetal action
(D) generating pressure directly
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Shivam • 8.86K Points
Tutor III

Q. A closed gas turbine in which fuel is burnt directly in the air is not possible because of

(A) high pressure ratio
(B) increasing gas temperature
(C) high specific volume
(D) paucity of 02.
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Shivam • 8.86K Points
Tutor III

Q. A compressor at high altitude will draw

(A) more power
(B) less power
(C) same power
(D) more/less power depending on other factors
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Shivam • 8.86K Points
Tutor III

Q. A gas turbine used in air craft should have

(A) high h.p. and low weight
(B) low weight and small frontal area
(C) small frontal area and high h.p.
(D) high speed and high h.p.
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Shivam • 8.86K Points
Tutor III

Q. A jet engine works on the principle of conservation of

(A) Mass
(B) Energy
(C) Flow
(D) Linear momentum
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Shivam • 8.86K Points
Tutor III

Q. A rocket engine for the combustion of its fuel

(A) carries its own oxygen
(B) uses surrounding air
(C) uses compressed atmospheric air
(D) does not require oxygen
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Shivam • 8.86K Points
Tutor III

Q. A rocket works with maximum overall efficiency when air craft velocity is equal to the

(A) jet velocity
(B) twice the jet velocity
(C) half the jet velocity
(D) average of the jet velocity
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Shivam • 8.86K Points
Tutor III

Q. A simple turbo-jet engine is basically

(A) a propeller system
(B) gas-turbine engine equipped with a propulsive nozzle and diffuse
(C) chemical rocket regine
(D) ram-jet engine
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Shivam • 8.86K Points
Tutor III

Q. Actual compression curve is

(A) same as isothermal
(B) same as adiabatic
(C) better than isothermal and adiabatic
(D) in between isothermal and adiabatic
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