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Internal Combustion Engines

Internal Combustion Engines
The thermal efficiency of diesel engines is about

0.15
0.5
0.7
0.3

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Internal Combustion Engines
A higher compression ratio causes

Any one of these
Pre-ignition
Increase in detonation
Acceleration in the rate of combustion

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Internal Combustion Engines
In loop scavenging, the top of the piston is

Contoured
Slanted
Flat
Depressed

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Internal Combustion Engines
If the speed of the engine is increased, the indicated power will

Decrease
Remain same
None of these
Increase

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Internal Combustion Engines
The compression ignition engines are governed by

Hit and miss governing
Qualitative governing
Quantitative governing
Combination of (B) and (C)

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Internal Combustion Engines
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have

Kinematic similarity
None of these
Dynamic similarity
Geometric similarity

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