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Internal Combustion Engines

Internal Combustion Engines
The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is

Same
Less
More
More or less depending on power rating

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Internal Combustion Engines
The knocking in spark ignition engines can be reduced by

Increasing the engine speed
None of these
Both (A) and (B)
Retarding the spark

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Internal Combustion Engines
Supercharging is essential in

Petrol engines
Gas turbines
Diesel engines
Aircraft engines

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Internal Combustion Engines
The function of a distributor in a coil ignition system of I.C. engines is

To distribute current
To distribute spark
To time the spark
To distribute power

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Internal Combustion Engines
The probability of knocking in diesel engines is increased by

Low volatility
All of these
Higher viscosity
High self ignition temperature

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Internal Combustion Engines
In petrol engines, advancing of the spark timing will ___ the knocking tendency.

Not effect
Increase
Decrease
None of the listed here

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