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Internal Combustion Engines

Internal Combustion Engines
The ignition quality of diesel oil is expressed by

Octane number
None of the listed here
Calorific value
Cetane number

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Internal Combustion Engines
A fuel of cetane number 40 has the same ignition quality as a mixture of

40% alpha methyl naphthalene and 60% cetane
40% petrol and 60% diesel
40% diesel and 60% petrol
40% cetane and 60% alpha methyl naphthalene

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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
Auto-ignition
Detonation

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

Higher viscosity
Low volatility
High self ignition temperature
All of these

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Internal Combustion Engines
A 5 BHP engine running at full load would consume diesel of the order of

5 kg/hr
1 kg/hr
3 kg/hr
0.3 kg/hr

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Internal Combustion Engines
In diesel engine, the compression ratio in comparison to expansion ratio is

Same
Less
More
Variable

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MORE MCQ ON Internal Combustion Engines

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