Automotive Engine Design Mcqs

Q:

Anything which burns in the presence of ______ is known as combustion.

A) water B) fuel
C) air D) salt
 
Answer & Explanation Answer: C) air

Explanation: Fuel(solid, liquid or gas) always need oxygen to get combusted and the air is the only source for the availability of oxygen. Hence, anything which burns in the presence of air is known as combustion.

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Q:

What is the idling RPM of a motorcycle petrol engine?

A) 1200RPM B) 700RPM
C) 18000RPM D) 60RPM
 
Answer & Explanation Answer: A) 1200RPM

Explanation: Idling RPM of a petrol engine is 1200 and for diesel engines, it is 700, whereas 18000 RPM is maximum RPM for superbike and 60 doesn’t exist.

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Q:

What is an internal combustion engine?

A) An engine that absorbs power by burning air+ water in a closed chamber B) An engine that generates power by burning air+ fuel in a closed chamber
C) An engine that generates power by burning air+ fuel in an open chamber D) An engine that absorbs power by burning air+ water in an open chamber
 
Answer & Explanation Answer: B) An engine that generates power by burning air+ fuel in a closed chamber

Explanation: Internal combustion engines are the engine that generates power by burning air and fuel (petrol, diesel, kerosene, etc..) in a closed chamber. Nothing can burn in the presence of water because water is a fire extinguisher.

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