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Consider a carnot cycle operating betwee...

Consider a carnot cycle operating between source tempeature 750 K and sink temperature 350 K producing 1.25 J KJ of mechanical work per cycle, the heat transferred to the engine by the reservers

A

1.34 KJ

B

2.34 KJ

C

3.34 KJ

D

4.34 KJ

Text Solution

Verified by Experts

The correct Answer is:
B
Here `t_(1)=750 K,t_(2)=350 K`,
W=1.25 Kj =1250 J
Now efficiency
`eta=1-(T_(2))/(T_(1))=1-(350)/(750)=(400)/(750)=(8)/(15)`
As `eta=(W)/(Q_(1))`
`therefore Q_(1)=(W)/(eta)=(1250)/(8//15)=(1250)/(8)xx15=2343.75 J = 2.34 KJ`
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