Aheat engine operates between a hot reservoir at 2000°c and the atmosphere (cold reservoir) at 25°c. it produces 50 mw of power while rejecting 40 mw of waste heat. determine the maximum possible thermal efficiency of the engine in percent.

55.56%

Explanation:

Given data

Temprature of hot reservior =2000°c=2273k

Temprature of Cold reservior=25°c=298k

Power produced by engine=50MW

Heat rejected =40MW

we know that Effeciency(η) of heat engine=

Also we know that

heat supplied

Q_s=50+40=90MW

η=

η=

η=55.55%

the correct answer is c.stops after infancy and childhood.

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the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about