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Internal Combustion Engines

Internal Combustion Engines
The _________ engines can work on very lean mixture of fuel.

Compression ignition
Both (A) and (B)
None of these
Spark ignition

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Internal Combustion Engines
Which of the following statement is correct regarding normal cetane?

It has long carbon chain structure
All of these
Its chemical name is normal hexadecane
It is a standard fuel used for knock rating of diesel engines

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Internal Combustion Engines
The voltage required to produce a spark across the gap, between the sparking points is

6000 to 10,000 volts
2000 to 4000 volts
10,000 to 12,000 volts
4000 to 6000 volts

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Internal Combustion Engines
The maximum temperature in the I.C. engine cylinder is of the order of

1000-1500°C
500-1000°C
2000-2500°C
1500-2000°C

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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
A petrol engine has compression ratio from

15 to 25
25 to 40
6 to 10
10 to 15

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