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Internal Combustion Engines

Internal Combustion Engines
The magneto in an automobile is basically

Magnetic circuit
Capacitor
Transformer
D.C. generator

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Internal Combustion Engines
In a four stroke cycle engine, the sequence of operations is

Suction, compression, expansion and exhaust
Expansion, compression, suction and exhaust
Suction, expansion, compression and exhaust
Compression, expansion, suction and exhaust

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

V₀ / (V₀ + V₁)
2V₀ / (V₀ + V₁)
V₁ / (V₀ + V₁)
2V₁ / (V₀ + V₁)

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Internal Combustion Engines
The mechanical efficiency (ηm) of the engine is given by

None of these
ηm = I.P/B.P
ηm = B.P/I.P
ηm = (B.P × I.P)/100

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by

V₀/(V₀ + V₁)
V₁/(V₀ + V₁)
(V₀/V₁)/ [1 + (V₀/V₁)²]
[2(V₀/V₁)]/ [1 + (V₀/V₁)²]

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

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

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MORE MCQ ON Internal Combustion Engines

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