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-2 section-1

Which engine emits more amounts of nitrogen oxides (NO_x)?

A) Spark ignition engine B) Compressed ignition engine C) Two stroke engine D) LPG engine

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Answer & Solution

Answer: Option B

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EGR combines with the exhaust residual left in the cylinder from the previous cycle to effectively reduce the . . . . . . . . . combustion temperature.

A) Minimum B) Maximum C) Unpredictable D) None of the mentioned

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Answer & Solution

Answer: Option B

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When scavenging is done, some of the air and fuel mix with the exhaust gases and are expelled out of the cylinder before the exhaust port closes.

A) True B) False

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Answer & Solution

Answer: Option A

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The main function of the intake manifold is that it

A) Cools the intake air to a suitable temperature B) Promotes the mixture of air and fuel C) Reduces intake noise D) Distributes intake air equally to the cylinders

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Answer & Solution

Answer: Option D

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EGR system recirculates a smallmetered amount of the inert exhaust gas back into the intake manifold:

A) To reduce the combustion temperature and lower the formation of N₂ B) To reduce peak combustion temperature and lower the formation of NO C) To increase peak combustion temperature and lower the formation of NO D) To reduce the exhaust gas temperature and lower the formation of particulate matter

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Answer & Solution

Answer: Option B

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A single soot particle may contain up to . . . . . . . . carbon spheres.

A) 600 B) 5000 C) 6000 D) 8000

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Answer & Solution

Answer: Option B

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The liquid-vapour separator is located in the

A) Fuel tank B) Carburettor C) Canister D) Purge valve

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Answer & Solution

Answer: Option A

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Why is the fumigation technique used?

A) To control HC B) To control NO_x C) To control CO D) To control smoke

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Answer & Solution

Answer: Option D

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How do we achieve near zero emission diesel engines?

A) Combo of PCV and EGR B) Combo of EGR and SCR C) Combo of PCV and 3 way catalytic connection D) Combo of DPF and EGR

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Answer & Solution

Answer: Option B

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Name the emission control technique when some amount of gases feed into the intake manifold of a running engine?

A) Exhaust gas recirculation B) Positive crank case ventilation C) Catalytic convention D) Selective catalytic reduction

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Answer & Solution

Answer: Option A

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