The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called

Internal Combustion Engines
The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called

Overall efficiency

Efficiency ratio

Relative efficiency

Net efficiency

Overall efficiency

Efficiency ratio

Relative efficiency

Net efficiency

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Internal Combustion Engines
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.

None of these

Increase

Decrease

Not effected

None of these

Increase

Decrease

Not effected

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Internal Combustion Engines
Pour point of fuel oil is the

Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

Indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off

Temperature at which it solidifies or congeals

It catches fire without external aid

Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

Indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off

Temperature at which it solidifies or congeals

It catches fire without external aid

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Internal Combustion Engines
It the temperature of intake air in IC engines is lowered, then its efficiency will

Increase up to certain limit and then decrease

Remain same

Increase

Decrease

Increase up to certain limit and then decrease

Remain same

Increase

Decrease

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Internal Combustion Engines
Engine pistons are usually made of aluminium alloy because it

Wear is less

Absorbs shocks

Is stronger

Is lighter

Wear is less

Absorbs shocks

Is stronger

Is lighter

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Internal Combustion Engines
The magneto in an automobile is basically

Transformer

Capacitor

D.C. generator

Magnetic circuit

Transformer

Capacitor

D.C. generator

Magnetic circuit

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Internal Combustion Engines

Internal Combustion Engines The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called

Internal Combustion Engines In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.

Internal Combustion Engines Pour point of fuel oil is the

Internal Combustion Engines It the temperature of intake air in IC engines is lowered, then its efficiency will

Internal Combustion Engines Engine pistons are usually made of aluminium alloy because it

Internal Combustion Engines The magneto in an automobile is basically

Internal Combustion Engines
The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called

Internal Combustion Engines
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.

Internal Combustion Engines
Pour point of fuel oil is the

Internal Combustion Engines
It the temperature of intake air in IC engines is lowered, then its efficiency will

Internal Combustion Engines
Engine pistons are usually made of aluminium alloy because it

Internal Combustion Engines
The magneto in an automobile is basically