# 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.

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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

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

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

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

Brake Power = (2×π×N×T)/60

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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

$C\quad +\quad { O }_{ 2 }\quad \rightarrow \quad { CO }_{ 2 }$
Here 12 kg pf C reacts with 32 kg of ${ O }_{ 2 }$, and produces 44 kg ${ CO }_{ 2 }$