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Internal Combustion Engines

Internal Combustion Engines
The colour of exhaust from diesel engine is generally

Bluish
Violet
White
Black

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Internal Combustion Engines
The increase of efficiency of a compression ignition engine, as the load decreases, is due to

Quantitative governing
Qualitative governing
Hit and miss governing
Higher maximum temperature

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Internal Combustion Engines
A carburettor is used to supply

Air and diesel
Petrol and lubricating oil
Petrol, air and lubricating oil
Petrol and air

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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

[2(V₀/V₁)]/ [1 + (V₀/V₁)²]
V₁/(V₀ + V₁)
V₀/(V₀ + V₁)
(V₀/V₁)/ [1 + (V₀/V₁)²]

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Internal Combustion Engines
The effective inhibitor of pre-ignition is

Water
Lead
None of these
Alcohol

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Internal Combustion Engines
The object of providing masked inlet valve in the air passage of compression ignition engines is to

Enhance flow rate
Induce secondary turbulence
Induce primary swirl
Control air flow

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