IC Engine Objective Questions

IC engine Objective Questions

Here are a few important Automobile Engineering or IC Engine Objective Questions with Answers for IES, GATE, ISRO, DRDO Exams. You must practice these IC Engine Objective Questions before appearing for the exams.

Read More- Fluid Mechanics: Objective Questions

1. The method of determination of indicated power of multi-cylinder SI engine is by the use of-

A. Morse test

B. Heat Balance test

C. Motoring test

D. Prony brake test

Click for Answer/Explanation

Correct Answer is A

Morse test- Since frictional power can be easily calculated.

2. The presence of nitrogen in the process of combustion ensures that:

A. air is used for the combustion

B. incomplete combustion of fuels occur

C. complete combustion of a fuel occurs

D. dry products of combustion are analyzed

Click for Answer/Explanation

Correct Answer is A

Since it doesn’t take part in combustion, so it indicates that air is used for combustion.

3. For the same maximum pressure and heat input, the most efficient cycle is-

A. Diesel Cycle

B. Otto Cycle

C. Brayton Cycle

D. Diesel Cycle

Click for Answer/Explanation

Correct Answer is A

4. In a variable speed SI engine, the maximum torque occurs at the maximum-

A. Brake Power

B. Speed

C. Volumetric Efficiency

D. Indicated Power

Click for Answer/Explanation

Correct Answer is A

Brake Power = (2×π×N×T)/60

Read More- Manufacturing Science: Objective Questions

5. The amount of CO2 produced by 1 kg of carbon on complete combustion is-

A. 3/11 kg

B. 3/8 kg

C. 8/3 kg

D. 11/3

Click for Answer/Explanation

Correct Answer is D

C\quad +\quad { O }_{ 2 }\quad \rightarrow \quad { CO }_{ 2 }

Here 12 kg pf C reacts with 32 kg of { O }_{ 2 } , and produces 44 kg { CO }_{ 2 }

Hence, 1 kg of C ? 44/12 = 11/3

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