INTERNAL COMBUSTION ENGINES QUIZ

A spark plug gap is kept from

0.4 to 0.9 mm

0.6 to 1.0 mm

0.3 to 0.7 mm

0.2 to 0.8 mm

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YOUR ANSWER : ?

Which is more viscous lube oil?

SAE 70

SAE 50

SEA 30

SAE 80

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Gaseous fuel guarantees are based on

Calorific value of oil

Mean heat value of oil

Low heat value of oil

High heat value of oil

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Number of working strokes per min. for a four stroke cycle engine are _________ the speed of the engine in r.p.m.

Four-times

Twice

Equal to

One-half

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In a cycle, the spark lasts roughly for

0.01 sec

0.001 sec

1 sec

0.1 sec

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If the compression ratio in I.C. engine increases, then its thermal efficiency will

Increase

Remain same

None of these

Decrease

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The air standard efficiency of an I.C. engine depends on

Fuel used

None of these

Speed of engine

Compression ratio

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High speed compression engines operate on

Otto cycle

Dual combustion cycle

All of these

Diesel cycle

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Diesel fuel, compared to petrol is

More difficult to ignite

Just about the same difficult to ignite

Less difficult to ignite

Highly ignitable

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Pick up the wrong statement about supercharging

There can be limited supercharging in petrol engines because of detonation

Supercharging at high altitudes is essential

Supercharging results in fuel economy

Supercharging reduces knocking in diesel engines

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