Which of the following statement is correct regarding normal cetane?

Internal Combustion Engines
Which of the following statement is correct regarding normal cetane?

Its chemical name is normal hexadecane

It is a standard fuel used for knock rating of diesel engines

It has long carbon chain structure

All of these

Its chemical name is normal hexadecane

It is a standard fuel used for knock rating of diesel engines

It has long carbon chain structure

All of these

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Internal Combustion Engines
A petrol engine has compression ratio from

6 to 10

10 to 15

25 to 40

15 to 25

6 to 10

10 to 15

25 to 40

15 to 25

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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

Cannot work as it is impossible

Best quality fuel is used

It is properly designed

Flywheel size is proper

Cannot work as it is impossible

Best quality fuel is used

It is properly designed

Flywheel size is proper

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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

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

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
Pick up the wrong statement about supercharging

Supercharging results in fuel economy

Supercharging at high altitudes is essential

There can be limited supercharging in petrol engines because of detonation

Supercharging reduces knocking in diesel engines

Supercharging results in fuel economy

Supercharging at high altitudes is essential

There can be limited supercharging in petrol engines because of detonation

Supercharging reduces knocking in diesel engines

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by

V₀/(V₀ + V₁)

(V₀/V₁)/ [1 + (V₀/V₁)²]

V₁/(V₀ + V₁)

[2(V₀/V₁)]/ [1 + (V₀/V₁)²]

V₀/(V₀ + V₁)

(V₀/V₁)/ [1 + (V₀/V₁)²]

V₁/(V₀ + V₁)

[2(V₀/V₁)]/ [1 + (V₀/V₁)²]

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Internal Combustion Engines

Internal Combustion Engines Which of the following statement is correct regarding normal cetane?

Internal Combustion Engines A petrol engine has compression ratio from

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 Pick up the wrong statement about supercharging

Internal Combustion Engines If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by

Internal Combustion Engines
Which of the following statement is correct regarding normal cetane?

Internal Combustion Engines
A petrol engine has compression ratio from

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
Pick up the wrong statement about supercharging

Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by