1.

An ideal gas heat engine operates in a carnot cycle between 227^@ C and 127^@ C. It absorbs 6 kcal at the higher temperature. The amount of heat (in kcal) converted into work is equal to _____

Answer»

1.2
4.8
3.5
1.6

Solution :Efficiency =`(T_1-T_2)/T_1`
`T_1`=227+273=500 K
`T_2`=127+273 = 400 K
`ETA=(500-400)/500=1/5`
`THEREFORE` Output work = `(eta)xx` INPUT heat = `1/5xx6`
=1.2 kcal


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