A refrigerator whose coefficient of performance is 5 extracts heat from the cooling compartment at the rate of 250 J per cycle. How mush electric energy is spend per cycle ? How much heat per cycle is discharged to the room ?

A refrigerator whose coefficient of performance is 5 extracts heat fro

1.	A refrigerator whose coefficient of performance is 5 extracts heat from the cooling compartment at the rate of 250 J per cycle. How mush electric energy is spend per cycle ? How much heat per cycle is discharged to the room ?
Answer» <html><body><p></p>Solution :`beta = (Q_(2))/(W)` <br/> `:. W = (Q_(2))/(beta) = (250)/(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>) = <a href="https://interviewquestions.tuteehub.com/tag/50-322056" style="font-weight:bold;" target="_blank" title="Click to know more about 50">50</a> J` <br/> `:.` Electric energy <a href="https://interviewquestions.tuteehub.com/tag/spent-1222060" style="font-weight:bold;" target="_blank" title="Click to know more about SPENT">SPENT</a> per cycle = 50 J <br/> Again, `Q_(1) = Q_(2) + W` <br/> or `Q_(1) = 250 + 50` or `Q_(1) = 300 J` <br/> `:.` <a href="https://interviewquestions.tuteehub.com/tag/heat-21102" style="font-weight:bold;" target="_blank" title="Click to know more about HEAT">HEAT</a> energy discharged per cycle to room = 300 J</body></html>