Heat Engines MCQs | Page - 4

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 • 52.52K Points
Coach

Q. An optical pyrometer works on the principle of

(A) Expansion of fluids
(B) Mono-chromatic radiation
(C) Thermo-electric effect
(D) Total radiation
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M

Mr. Dubey • 52.52K Points
Coach

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

(A) 15 ; 1
(B) 20 ; 1
(C) 400 ; 1
(D) 60 ; 1
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M

Mr. Dubey • 52.52K Points
Coach

Q. The top ring nearest to the piston crown is known as

(A) Oil ring
(B) Scrapper ring
(C) Compression ring
(D) Groove ring
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M

Mr. Dubey • 52.52K Points
Coach

Q. The vapour pressure is related to the enthalpy of vaporization in

(A) Maxwell's equation
(B) Henry's law
(C) Dalton's law
(D) Clausius Clapeyron equation
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M

Mr. Dubey • 52.52K Points
Coach

Q. Flash point of a liquids is the temperature at which

(A) The fuel ignites with clearly visible flash
(B) Fuel vaporises at the prescribed rate
(C) The fuel emits vapours at a rate which produces an inflammable mixture with air
(D) The fuel ignites without a park
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M

Mr. Dubey • 52.52K Points
Coach

Q. According to kinetic theory of heat

(A) At absolute zero there is absolutely no vibration of molecules
(B) At low temperatures all bodies are in solid state
(C) 25 to 30
(D) Temperature should rise during boiling
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M

Mr. Dubey • 52.52K Points
Coach

Q. Regenerative feed heating of steam turbines is done primarily to

(A) Improve thermal efficiency of the condenser
(B) Increase the expansion range for steam in the turbine
(C) Improve overall efficiency of the plant
(D) Reduce pressure of steam in exhaust
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M

Mr. Dubey • 52.52K Points
Coach

Q. Ricardo's theory is associated with

(A) Steam turbines
(B) Wankel engines
(C) Internal combustion engines
(D) Closed cycle gas turbines
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M

Mr. Dubey • 52.52K Points
Coach

Q. A 'blue' flame is

(A) Non-radiant flame
(B) Radiant flame
(C) Super high temperature flame
(D) Ordinary flame in oil burners
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M

Mr. Dubey • 52.52K Points
Coach

Q. The thermal efficiency of a dual cycle engine with fixed compression ratio and fixed quantity of het and with increase in pressure ratio, will

(A) Increase
(B) Decrease
(C) Not change
(D) Depends on another factors
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