Ignition System MCQ Questions & Answers

1

Spark plug gaps are required in the range of

A) 0.02 to 0.6 mm B) 0.45 to 1.00 mm C) 0.90 to 2.00 mm D) 1.00 to 1.30 mm

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Answer & Solution

Answer: Option B

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2

What is the dwell time?

A) It is the time for which the contact breaker points remain closed B) It is the time for which the contact breaker points remain open C) The time during which inlet and exhaust valves open D) The time during which inlet and exhaust valves close

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Answer & Solution

Answer: Option A

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3

Preignition can be caused due to presence of . . . . . . . .

A) Excess lubricants in cylinder B) Gum in fuel C) Over-heated spark plug D) Higher volume of air in air fuel mixture

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Answer & Solution

Answer: Option C

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4

A signal generator in transistorized ignition system consist of

A) Ignition coil, permanent magnet and electronic control unit B) A signal rotor, permanent magnet and electronic control unit C) A signal rotor, a pick up coil and electronic control unit D) A signal rotor, a pick up coil and a permanent magnet

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Answer & Solution

Answer: Option D

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5

The voltage required to produce a spark between the spark points in spark plug is in the range

A) 2 to 4 kV B) 5 to 5.5 kV C) 6 to 10 kV D) 12 to 15 kV

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Answer & Solution

Answer: Option D

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6

The contact breaker points are generally made of

A) Plastic B) Steel C) Copper D) Tungsten

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Answer & Solution

Answer: Option D

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7

How is the frequency of firing in a two-stroke concerning the value of four-stroke engines?

A) Same as the value of four-stroke B) Twice the value of four-stroke C) Has no relationship with four-stroke D) Four times the value of four-stroke

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Answer & Solution

Answer: Option B

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8

Part load operation of a spark ignition engine is not affected by throttling the incoming charge.

A) True B) False

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Answer & Solution

Answer: Option B

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9

Which instrument is used for adjusting the ignition timing?

A) Accurate clock B) Tachometer C) Stopwatch D) Stroboscopic light

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Answer & Solution

Answer: Option D

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10

The function of the distributor is to distribute the ignition surges to the individual spark plug in the correct sequence and at the correct instants in time.

A) True B) False

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Answer & Solution

Answer: Option A

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Ignition System MCQ Questions & Answers | Automobile Engineering