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Internal Combustion Engines

Internal Combustion Engines
High speed compression engines operate on

Diesel cycle
All of these
Otto cycle
Dual combustion cycle

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Internal Combustion Engines
The object of supercharging the engine is

To reduce space occupied by the engine
All of these
To reduce mass of the engine per brake power
To increase the power output of an engine when greater power is required

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Internal Combustion Engines
The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed

80°C
240°C
120°C
180°C

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Internal Combustion Engines
The ratio of the brake power to the indicated power is called

Mechanical efficiency
Indicated thermal efficiency
Volumetric efficiency
Overall efficiency

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Internal Combustion Engines
Which of the following fuel has little tendency towards detonation?

Normal heptane
Benzene
Alcohol
Iso-octane

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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 buoyancy
Centre of gravity
Metacentre
Centre of pressure

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