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Internal Combustion Engines

Internal Combustion Engines
Iso-octane (C₈H₁₈) has octane number of

50
0
100
120

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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
Antiknock for compression ignition engines is

Hexadecane
Tetra ethyl lead
Amyl nitrate
Napthene

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Internal Combustion Engines
The pressure and temperature at the end of compression stroke in a petrol engine are of the order of

20-30 kg/cm² and 450-500°C
12-20 kg/cm² and 350-450°C
4-6 kg/cm² and 200-250°C
6-12 kg/cm² and 250-350°C

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Internal Combustion Engines
A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is

248 cm3
286 cm3
252 cm3
264 cm3

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

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

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