In a four stroke cycle petrol engine, the charge is ignited at

Internal Combustion Engines
In a four stroke cycle petrol engine, the charge is ignited at

30° before bottom dead center

30° after bottom dead center

30° before top dead center

30° after top dead center

30° before bottom dead center

30° after bottom dead center

30° before top dead center

30° after top dead center

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Internal Combustion Engines
The voltage required to produce a spark across the gap, between the sparking points is

10,000 to 12,000 volts

6000 to 10,000 volts

2000 to 4000 volts

4000 to 6000 volts

10,000 to 12,000 volts

6000 to 10,000 volts

2000 to 4000 volts

4000 to 6000 volts

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

Î·m = (B.P Ã— I.P)/100

Î·m = I.P/B.P

Î·m = B.P/I.P

None of these

Î·m = (B.P Ã— I.P)/100

Î·m = I.P/B.P

Î·m = B.P/I.P

None of these

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Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

0

120

100

50

0

120

100

50

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Internal Combustion Engines
Scavenging air in diesel engine means

Air used for combustion sent under pressure

Air used for forcing burnt gases out of engine's cylinder during the exhaust period

Forced air for cooling cylinder

Burnt air containing products of combustion

Air used for combustion sent under pressure

Air used for forcing burnt gases out of engine's cylinder during the exhaust period

Forced air for cooling cylinder

Burnt air containing products of combustion

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Internal Combustion Engines

Internal Combustion Engines In a four stroke cycle petrol engine, the charge is ignited at

Internal Combustion Engines The voltage required to produce a spark across the gap, between the sparking points is

Internal Combustion Engines Pour point of fuel oil is the

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

Internal Combustion Engines Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

Internal Combustion Engines Scavenging air in diesel engine means

Internal Combustion Engines
In a four stroke cycle petrol engine, the charge is ignited at

Internal Combustion Engines
The voltage required to produce a spark across the gap, between the sparking points is

Internal Combustion Engines
Pour point of fuel oil is the

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

Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

Internal Combustion Engines
Scavenging air in diesel engine means