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Internal Combustion Engines

Internal Combustion Engines
Iso-octane (C₈H₁₈) has octane number of

120
50
100

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Internal Combustion Engines
The loud pulsating noise heard within the cylinder of an internal combustion engine is known as

Pre-ignition
Turbulence
Supercharging
Detonation

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Internal Combustion Engines
The firing order in an I.C. engine depends upon

Number of cylinders
Design of crankshaft
All of these
Arrangement of the cylinders

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Internal Combustion Engines
The mechanical efficiency (ηm) of the engine is given by

ηm = I.P/B.P
ηm = B.P/I.P
ηm = (B.P × I.P)/100
None of these

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

2V₁ / (V₀ + V₁)
V₁ / (V₀ + V₁)
V₀ / (V₀ + V₁)
2V₀ / (V₀ + V₁)

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Internal Combustion Engines
The increase in intake temperature of internal combustion engines will ___ efficiency.

Increase
None of the listed here
Decrease
Have no effect on

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MORE MCQ ON Internal Combustion Engines

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