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Heat Engines MCQs | Page - 48

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.

M

Mr. Dubey • 51.43K Points
Coach

Q. 471) Coking is

(A) In boiler furnace some coal becomes plastic and forms lumps or masses of coke
(B) Making cakes of coal out of fine powders
(C) Coal produced from burning of wood in inert atmosphere
(D) Free burning coals are known as coking coals
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Mr. Dubey • 51.43K Points
Coach

Q. 472) Shock effect in the nozzle generally occurs in

(A) Inlet
(B) Converging section
(C) Throat
(D) Diverging section
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Mr. Dubey • 51.43K Points
Coach

Q. 473) If engines of different horse power, rpm, cylinder dimensions are to be compared for their performance, the parameter of comparison could be

(A) Mean effective pressure
(B) Specific speed
(C) Exhaust temperature
(D) Fuel consumption
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Mr. Dubey • 51.43K Points
Coach

Q. 474) Ambassador car engine is

(A) F-type
(B) Overhead valve type
(C) Side valve type
(D) L-type
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Mr. Dubey • 51.43K Points
Coach

Q. 475) Which of the following chemical acts as anti-freeze?

(A) Naphtha
(B) Glycol
(C) Ethyl alcohol
(D) Lead acetate
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Mr. Dubey • 51.43K Points
Coach

Q. 476) A low pressure accumulator is generally used with which of the following turbine

(A) Mixed pressure turbine
(B) Back pressure turbine
(C) Impulse turbine
(D) Condensing turbine
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Mr. Dubey • 51.43K Points
Coach

Q. 477) Which is not the cause for loss of heat in boiler due to incomplete combustion?

(A) Under cooling of furnace at low ratings
(B) Improper secting of boiler
(C) Insufficient air supply
(D) Boiler drum uninsulated
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Mr. Dubey • 51.43K Points
Coach

Q. 478) Temporary hardness of water is caused by

(A) Bicarbonates of calcium and magnesium
(B) Sulphates of calcium and magnesium
(C) Chlorides of calcium and magnesium
(D) Nitrates of calcium and magnesium
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Mr. Dubey • 51.43K Points
Coach

Q. 479) Crankcase explosion occurs in

(A) Four stroke SI engines
(B) Four stroke Cl engines
(C) Two stroke Cl engines
(D) Two stroke SI engines
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Mr. Dubey • 51.43K Points
Coach

Q. 480) Which of the following offers best resistance to knocking in S.I. engines?

(A) Aromatics
(B) Paraffins
(C) Carbon dioxide
(D) Naphthenes
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