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Internal Combustion Engines

Internal Combustion Engines
A petrol engine, during suction stroke draws

Air only
Petrol only
None of these
A mixture of petrol and air

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Internal Combustion Engines
Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows

Increasing the compression ratio
Adherence to proper fuel specification
Avoidance of overloading
Using additives in the fuel

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

Overall efficiency
Indicated thermal efficiency
Volumetric efficiency
Mechanical efficiency

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Internal Combustion Engines
In a naturally aspirated diesel engine, the air is supplied by

A centrifugal blower
A supercharger
An injection tube
A vacuum chamber

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Internal Combustion Engines
A diesel engine is ___ as compared to petrol engine, both running at rated load.

Less efficient
Equally efficient
More efficient
None of the listed here

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Internal Combustion Engines
A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is

286 cm3
252 cm3
264 cm3
248 cm3

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