INTERNAL COMBUSTION ENGINES QUIZ

The specific fuel consumption per BHP hour for diesel engine is approximately

0.2 kg

0.25 kg

0.15 kg

0.3 kg

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A petrol engine has compression ratio from

10 to 15

25 to 40

6 to 10

15 to 25

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In case of gas turbines, the gaseous fuel consumption guarantees are based on

High heat value

Net calorific value

Calorific value

Low heat value

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In the crankcase method of scavenging, the air pressure is produced by

Supercharger

Centrifugal pump

Movement of engine piston

Natural aspirator

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

6-12 kg/cmÂ² and 250-350Â°C

20-30 kg/cmÂ² and 450-500Â°C

4-6 kg/cmÂ² and 200-250Â°C

12-20 kg/cmÂ² and 350-450Â°C

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The magneto in an automobile is basically

D.C. generator

Transformer

Capacitor

Magnetic circuit

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The theoretically correct mixture of air and petrol is

20 : 1

25 : 1

15 : 1

10 : 1

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

Less

Same

Variable

More

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The reference fuels for knock rating of spark ignition engines would include

Iso-octane and normal hexane

Normal octane and aniline

Iso-octane and alpha-methyl naphthalene

Normal heptane and iso-octane

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

To distribute current

To time the spark

To distribute spark

To distribute power

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