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Internal Combustion Engines

Internal Combustion Engines
The ignition of the charge by some hot surface within the engine before the passage of spark is called

Ignition delay
Detonation
Auto-ignition
Pre-ignition

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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

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

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Internal Combustion Engines
The term scavenging is generally associated with

2-stroke cycle engines
4-stroke cycle engines
High efficiency engines
Aeroplane engines

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Internal Combustion Engines
A 75 cc engine has following parameter as 75 cc

Lube oil capacity
Cylinder volume
Swept volume
Fuel tank capacity

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Internal Combustion Engines
Supercharging is essential in

Gas turbines
Aircraft engines
Diesel engines
Petrol engines

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Internal Combustion Engines
The advancing of spark timing in spark ignition engines will ___ knocking tendency.

Reduce
Increase
None of the listed here
Not effect

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