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When the spark is advanced, the work output is less as ____________

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When the spark is advanced, the work output is less as ____________

(a) the peak pressure is low

(b) the peak temperature is low

(c) additional work is required to compress the burning gas

(d) frictional losses increase

The question was asked by my college director while I was bunking the class.

My doubt is from Actual Cycle topic in division Fuel Air and Actual Cycles and their Analysis of IC Engine

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Correct option is (c) additional work is required to compress the burning gas

Best explanation: When the spark is advanced, the work output is less as additional work is required to compress the burning gas.

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