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

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

2000 to 4000 volts

6000 to 10,000 volts

4000 to 6000 volts

10,000 to 12,000 volts

2000 to 4000 volts

6000 to 10,000 volts

4000 to 6000 volts

10,000 to 12,000 volts

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Internal Combustion Engines
Diesel engine can work on very lean air fuel ratio of the order of 30: 1. A petrol engine can also work on such a lean ratio provided

It is properly designed

Flywheel size is proper

Best quality fuel is used

Cannot work as it is impossible

It is properly designed

Flywheel size is proper

Best quality fuel is used

Cannot work as it is impossible

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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

Temperature at which it solidifies or congeals

It catches fire without external aid

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 solidifies or congeals

It catches fire without external aid

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

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Internal Combustion Engines
The theoretically correct mixture of air and petrol is

15 : 1

20 : 1

25 : 1

10 : 1

15 : 1

20 : 1

25 : 1

10 : 1

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Internal Combustion Engines
Scavenging is usually done to increase

Thermal efficiency

Fuel consumption

Speed

Power output

Thermal efficiency

Fuel consumption

Speed

Power output

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Internal Combustion Engines
In a four stroke cycle engine, the sequence of operations is

Suction, expansion, compression and exhaust

Suction, compression, expansion and exhaust

Expansion, compression, suction and exhaust

Compression, expansion, suction and exhaust

Suction, expansion, compression and exhaust

Suction, compression, expansion and exhaust

Expansion, compression, suction and exhaust

Compression, expansion, suction and exhaust

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Internal Combustion Engines

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

Internal Combustion Engines Diesel engine can work on very lean air fuel ratio of the order of 30: 1. A petrol engine can also work on such a lean ratio provided

Internal Combustion Engines Pour point of fuel oil is the

Internal Combustion Engines The theoretically correct mixture of air and petrol is

Internal Combustion Engines Scavenging is usually done to increase

Internal Combustion Engines In a four stroke cycle engine, the sequence of operations is

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

Internal Combustion Engines
Diesel engine can work on very lean air fuel ratio of the order of 30: 1. A petrol engine can also work on such a lean ratio provided

Internal Combustion Engines
Pour point of fuel oil is the

Internal Combustion Engines
The theoretically correct mixture of air and petrol is

Internal Combustion Engines
Scavenging is usually done to increase

Internal Combustion Engines
In a four stroke cycle engine, the sequence of operations is