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Question
Consider an engine that absorbs 130 cal of heat from a hot reservoir and delivers 30 cal heat to a cold reservoir in each cycle. The engine also consumes 2 J energy in each cycle to overcome friction. If the engine works at 90 cycles per minute, what will be the maximum power delivered to the load?
Consider an engine that absorbs 130 cal of heat from a hot reservoir and delivers 30 cal heat to a cold reservoir in each cycle. The engine also consumes 2 J energy in each cycle to overcome friction. If the engine works at 90 cycles per minute, what will be the maximum power delivered to the load?
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Solution
The correct option is C 627 W
Total workdone in one cycle=[(130−30)×4.2−2] J=(420−2) J=418 J
For 90 cycles; W=90×418 J
P=Wt=90×41860=627 W
Total workdone in one cycle=[(130−30)×4.2−2] J=(420−2) J=418 J
For 90 cycles; W=90×418 J
P=Wt=90×41860=627 W
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