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Internal Combustion Engines

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

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

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Internal Combustion Engines
If the temperature of intake air in internal combustion engine increases, then its efficiency will

None of the listed here
Remain same
Decrease
Increase

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Internal Combustion Engines
The thermal efficiency of petrol and gas engines is about

0.15
0.5
0.3
0.7

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Internal Combustion Engines
The thermal efficiency of diesel engines is about

0.5
0.3
0.15
0.7

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Internal Combustion Engines
An hmh flame speed is obtained in diesel engine when air fuel ratio is

Chemically correct mixture
About 10% of rich mixture
About 35% of rich mixture
Uniform throughout the mixture

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Internal Combustion Engines
A spark plug gap is kept from

0.3 to 0.7 mm
0.4 to 0.9 mm
0.2 to 0.8 mm
0.6 to 1.0 mm

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MORE MCQ ON Internal Combustion Engines

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