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Internal Combustion Engines

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

0.15
0.3
0.5
0.7

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Internal Combustion Engines
All heat engines utilize

Low heat value of oil
Calorific value of fuel
High heat value of oil
Net calorific value of oil

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Internal Combustion Engines
The ignition of the charge by some hot surface within the engine before the passage of spark is called

Pre-ignition
Detonation
Ignition delay
Auto-ignition

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Internal Combustion Engines
Stoichiometric ratio is

Chemically correct air-fuel ratio by volume
Chemically correct air-fuel ratio by weight
Actual air-fuel ratio for maximum efficiency
None of these

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Internal Combustion Engines
A diesel engine, during suction stroke, draws

Air only
None of these
Diesel only
A mixture of diesel and air

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Internal Combustion Engines
A diesel engine as compared to petrol engine (both running and rated load) is

Equally efficient
More efficient
Other factors will decide it
Less efficient

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MORE MCQ ON Internal Combustion Engines

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