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Internal Combustion Engines

Internal Combustion Engines
Combustion in compression ignition engines is

Both (A) and (B)
Laminar
Heterogeneous
Homogeneous

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Internal Combustion Engines
The brake power of a diesel engine, keeping other parameters constant, can be increased by

Decreasing the pressure of intake air
Increasing the temperature of intake air
Increasing the pressure of intake air
Decreasing the density of intake air

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Internal Combustion Engines
Diesel fuel, compared to petrol is

More difficult to ignite
Highly ignitable
Less difficult to ignite
Just about the same difficult to ignite

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Internal Combustion Engines
Crankcase explosion in I.C. engines usually occurs as

First a mild explosion followed by a bi explosion
Both mild and big explosions occurs simultaneously
Never occurs
First a big explosion followed by a mil explosion

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Internal Combustion Engines
Iso-octane (C₈H₁₈) has octane number of

50
100
120
0

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Internal Combustion Engines
The output of a diesel engine can be increased without increasing the engine revolution or size in following way

Feeding more fuel
Scavenging
Heating incoming air
Supercharging

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MORE MCQ ON Internal Combustion Engines

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