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Internal Combustion Engines

Internal Combustion Engines
A diesel engine has compression ratio from

10 to 15
25 to 40
6 to 10
15 to 25

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Internal Combustion Engines
In the crankcase method of scavenging, the air pressure is produced by

Supercharger
Movement of engine piston
Natural aspirator
Centrifugal pump

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Internal Combustion Engines
Supercharging is essential in

Aircraft engines
Gas turbines
Diesel engines
Petrol engines

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Internal Combustion Engines
A fuel of cetane number 40 has the same ignition quality as a mixture of

40% petrol and 60% diesel
40% alpha methyl naphthalene and 60% cetane
40% diesel and 60% petrol
40% cetane and 60% alpha methyl naphthalene

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Internal Combustion Engines
Compression loss in I.C engines occurs due to

Clogged air inlet slots
All of these
Leaking piston rings
Use of thick head gasket

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

Overall efficiency
Volumetric efficiency
Indicated thermal efficiency
Mechanical efficiency

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MORE MCQ ON Internal Combustion Engines

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