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Heat Engines MCQs | Page - 31

Dear candidates you will find MCQ questions of Heat Engines here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.43K Points
Coach

Q. 301) Thermal efficiency of a standard Otto cycle for a compression ratio 5.5, will be

(A) 100%
(B) 47.50%
(C) 20%
(D) 50%
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Mr. Dubey • 51.43K Points
Coach

Q. 302) The calorific value of methane can be determined by

(A) Bomb calorimeter
(B) Bunsen's calorimeter
(C) Orsat's apparatus
(D) None of the above
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Mr. Dubey • 51.43K Points
Coach

Q. 303) The fact that the product of pressure and volume of a fixed amount of gas is approximately a constant value is known as

(A) Charle's law
(B) Gay Lusac's law
(C) Dalton's law
(D) None of the above
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Mr. Dubey • 51.43K Points
Coach

Q. 304) Air fuel ratio for a jet engine is of the order of

(A) 60;1
(B) 15;1
(C) 600;1
(D) 20;1
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Mr. Dubey • 51.43K Points
Coach

Q. 305) A steam nozzle is said to be choked when

(A) Pressure at throat is equal to steam supply pressure
(B) Throat gets clogged
(C) Flow is at maximum value of critical exit pressure
(D) Pressure at throat is less than the exit pressure
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Mr. Dubey • 51.43K Points
Coach

Q. 306) In a four stroke cycle the minimum temperature inside the engine cylinder occurs

(A) At the end of exhaust stroke
(B) At the end of suction stroke
(C) At the end of compression stroke
(D) At the beginning of exhaust stroke
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Mr. Dubey • 51.43K Points
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Q. 307) According to Charle's law

(A) At constant pressure the volume of a gas is proportional to its absolute temperature
(B) At constant temperature, pressure is proportional to temperature
(C) At constant temperature, pressure of a gas is proportional to its volume
(D) At constant volume the absolute pressure is proportional to the temperature
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Mr. Dubey • 51.43K Points
Coach

Q. 308) Prony brakes are used for testing

(A) Slow speed engines
(B) High speed engines
(C) Engines with small flywheel
(D) Small engines
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Mr. Dubey • 51.43K Points
Coach

Q. 309) In wet dry lubrication of diesel engines

(A) Oil is splashed
(B) Oil is splashed and pumped to various points
(C) Oil is pumped to various points
(D) All of the above
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Mr. Dubey • 51.43K Points
Coach

Q. 310) In a velocity compounded impulse turbine, while steam flows through the second row of moving blades

(A) The velocity increases
(B) The velocity reduces
(C) Both velocity as well as pressure increase
(D) The velocity remains constant
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