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Internal Combustion Engines

Internal Combustion Engines
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.

Increase
Not effected
None of these
Decrease

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Internal Combustion Engines
Diesel as compared to petrol is

Highly ignitable
None of these
More difficult to ignite
Less difficult to ignite

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Internal Combustion Engines
The knocking in diesel engines may be prevented by

All of these
Raising the compression ratio
Reducing the delay period
Increasing the inlet pressure of air

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Internal Combustion Engines
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as

Centre of gravity
Centre of buoyancy
Centre of pressure
Metacentre

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Internal Combustion Engines
The volumetric efficiency of a well designed engine may be

60 to 70%
40 to 60%
75 to 90%
30 to 40%

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Internal Combustion Engines
The maximum temperature in the I.C. engine cylinder is of the order of

500-1000°C
2000-2500°C
1500-2000°C
1000-1500°C

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MORE MCQ ON Internal Combustion Engines

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