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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
Pre-ignition
Detonation
Auto-ignition

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Internal Combustion Engines
Theoretically, a four stroke cycle engine should develop _________ power as that of a two stroke cycle engine.

Same
Double
Four times
Half

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Internal Combustion Engines
Most high speed compression engines operate on

Dual combustion cycle
Otto cycle
Diesel cycle
Special type of air cycle

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Internal Combustion Engines
In order to eliminate knocking in compression ignition engines, there should be

Late auto-ignition
Low compression ratio
Short delay period
High self ignition temperature of fuel

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Internal Combustion Engines
Supercharging is the process of supplying the intake air to the engine cylinder at a density ___ the density of the surrounding atmosphere.

Equal to
Greater than
None of the listed here
Less than

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

10 : 1
25 : 1
15 : 1
20 : 1

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