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Heat Engines MCQs | Page - 45

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. 441) If in a compression ignition engine the noise level is to be reduced, the design features which will not be affected are

(A) Combustion system
(B) Exhaust muffling
(C) Intake muffling
(D) Fuel injection equipment
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M

Mr. Dubey • 51.43K Points
Coach

Q. 442) For dry saturated steam the value of adiabatic index n is taken as

(A) 1.135
(B) 1.41
(C) 1.35
(D) 25 to 30
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M

Mr. Dubey • 51.43K Points
Coach

Q. 443) In a petrol engine the mixture strength for maximum power is

(A) 1 ; 5
(B) Carbon dioxide
(C) 1 ; 30
(D) 1 ; 13
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M

Mr. Dubey • 51.43K Points
Coach

Q. 444) The main purpose of compounding in case of steam turbines is to

(A) Reduced speed of rotor
(B) Reduced exist losses
(C) Improve thermal efficiency
(D) All of the above
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M

Mr. Dubey • 51.43K Points
Coach

Q. 445) Which of the following is not the same as watt?

(A) Joule/sec
(B) Amperes/volt
(C) Ampere x volt
(D) (Ampere)2 x ohm
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M

Mr. Dubey • 51.43K Points
Coach

Q. 446) In an engine radiator, heat is transferred by

(A) Conduction
(B) Convection
(C) Radiation
(D) Conduction and convection
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M

Mr. Dubey • 51.43K Points
Coach

Q. 447) A rich mixture will have an air-fuel ratio

(A) Less than chemically correct
(B) More than chemically correct
(C) Chemically correct
(D) Any of the above
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M

Mr. Dubey • 51.43K Points
Coach

Q. 448) How many kg of air will contain one kg of oxygen?

(A) 6.65 kg
(B) 10 kg
(C) 4.35 kg
(D) 12.5 kg
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M

Mr. Dubey • 51.43K Points
Coach

Q. 449) Vapour lock is

(A) Seizure of supply of fuel in a diesel engine
(B) Serious restriction to the supply of fuel due to excessively rapid formation of vapour in S.I. engine
(C) Locking of carbourettor jets due to vapour formation
(D) Locking of jets due to impurities in petrol
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M

Mr. Dubey • 51.43K Points
Coach

Q. 450) Which of the following part is not common between a steam engine and a petrol engine?

(A) Crankshaft
(B) Connecting road
(C) Piston rings
(D) Muffler
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