Air Pollution and its Control in Automobile MCQ Questions & Answers

Air Pollution and its Control in Automobile MCQ Questions & Answers | Automobile Engineering

Learn and Practice Air Pollution and its Control in Automobile MCQ Questions & Answers are Available for Automobile Engineering Students to Clear GATE Exams, Technical Interviews, Competitive Examinations, and Other Entrance Exams. The Air Pollution and its Control in Automobile Chapter is Especially Important for Automobile Engineering and GATE Students. Page-1 section-2

H₂ emissions occur under . . . . . . . . operating conditions.

A) Rich B) Lean C) Constant D) None of the mentioned

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Answer & Solution

Answer: Option A

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What does the blue smoke in diesel engine indicate?

A) Unburnt oil B) HC C) NO_x D) CO

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Answer & Solution

Answer: Option A

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The electronic control unit outputs a signal

A) Directly to the throttle valve control motor B) To the accelerator pedal position sensor C) To the driver unit D) To the throttle position sensor

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Answer & Solution

Answer: Option C

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Three-way catalytic converters reduce the emission of CO, HC, and soot.

A) True B) False

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Answer & Solution

Answer: Option B

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The primary condition that results in the emission of CO in large quantities is

A) Insufficient air during combustion B) Lean air-fuel ratio during engine operation C) Low temperature combustion D) High temperature combustion

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Answer & Solution

Answer: Option A

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What is the acronym for DPF in exhaust emission system?

A) Diesel pressure filter B) Diesel primary filter C) Diesel particulate filter D) Direct particulate filter

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Answer & Solution

Answer: Option C

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. . . . . . . . is the principal ingredient used in commercial catalysts to remove NO.

A) Aluminium B) Rhodium C) Platinum D) None of the above

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Answer & Solution

Answer: Option B

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Which pollutant is released more from diesel engine during weak compression?

A) CO B) Particulate matter C) HC D) NO_x

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Answer & Solution

Answer: Option B

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The function of the throttle valve control motor is to

A) Open and close the throttle valve in the throttle body B) Assists the throttle cable in controlling throttle opening C) Sends a signal to the ECU indicating fuel consumption D) Signals the driver unit when the throttle valve is opening and closing

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Answer & Solution

Answer: Option A

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The blowby HC emissions are about 30% of the total HC emission from the engine.

A) True B) False

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Answer & Solution

Answer: Option B

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