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IC Engines - Interview Questions and Answers

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16. Scavenging air in diesel engine means
A. air used for combustion sent under pres-sure
B. forced air for cooling cylinder
C. burnt air containing products of com-bastion
D. air used for forcing burnt gases out of engine's cylinder during the exhaust period
E. air fuel mixture.
Explanation:
17. Combustion in compression ignition engines is
A. homogeneous
B. heterogeneous
C. both (a) and (b)
D. laminar
E. turbulent.
Explanation:
18. The output of a diesel engine can be increased without increasing the engine revolution or size in following way
A. feeding more fuel
B. increasing flywheel size
C. heating incoming air
D. scavenging
E. supercharging.
Explanation:
19. The air-fuel ratio of the petrol engine is controlled by
A. fuel pump
B. governor
C. injector
D. carburettor
E. scavenging.
Explanation:
20. A 75 cc engine has following parameter as 75 cc
A. fuel tank capacity
B. lub oil capacity
C. swept volume
D. cylinder volume
E. clearance volume.
Explanation:
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