Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads

Internal Combustion Engines
Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads

The small difference in cooling water temperature or in internal friction has a disproportionate effect

The friction is high

The friction is unpredictable

The engine is rarely operated

The small difference in cooling water temperature or in internal friction has a disproportionate effect

The friction is high

The friction is unpredictable

The engine is rarely operated

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Internal Combustion Engines
The size of inlet valve of an engine in comparison to exhaust valve is

More

More/less depending on capacity of engine

Same

Less

More

More/less depending on capacity of engine

Same

Less

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Internal Combustion Engines
The maximum temperature in the I.C. engine cylinder is of the order of

2000-2500Â°C

1000-1500Â°C

1500-2000Â°C

500-1000Â°C

2000-2500Â°C

1000-1500Â°C

1500-2000Â°C

500-1000Â°C

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Internal Combustion Engines
The brake power of a diesel engine, keeping other parameters constant, can be increased by

Increasing the pressure of intake air

Decreasing the pressure of intake air

Increasing the temperature of intake air

Decreasing the density of intake air

Increasing the pressure of intake air

Decreasing the pressure of intake air

Increasing the temperature of intake air

Decreasing the density of intake air

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Internal Combustion Engines
The mechanical efficiency (Î·m) of the engine is given by

Î·m = (B.P Ã— I.P)/100

Î·m = B.P/I.P

Î·m = I.P/B.P

None of these

Î·m = (B.P Ã— I.P)/100

Î·m = B.P/I.P

Î·m = I.P/B.P

None of these

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Internal Combustion Engines
Flash point of fuel oil is

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

Temperature at which it catches fire without external aid

Temperature at which it solidifies or congeals

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

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

Temperature at which it catches fire without external aid

Temperature at which it solidifies or congeals

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

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Internal Combustion Engines

Internal Combustion Engines Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads

Internal Combustion Engines The size of inlet valve of an engine in comparison to exhaust valve is

Internal Combustion Engines The maximum temperature in the I.C. engine cylinder is of the order of

Internal Combustion Engines The brake power of a diesel engine, keeping other parameters constant, can be increased by

Internal Combustion Engines The mechanical efficiency (Î·m) of the engine is given by

Internal Combustion Engines Flash point of fuel oil is

Internal Combustion Engines
Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads

Internal Combustion Engines
The size of inlet valve of an engine in comparison to exhaust valve is

Internal Combustion Engines
The maximum temperature in the I.C. engine cylinder is of the order of

Internal Combustion Engines
The brake power of a diesel engine, keeping other parameters constant, can be increased by

Internal Combustion Engines
The mechanical efficiency (Î·m) of the engine is given by

Internal Combustion Engines
Flash point of fuel oil is