An ideal heat engine absorbs 84.5 kJ of heat and exhausts 71.8 kJ of heat in...

Question

Question

An ideal heat engine absorbs 84.5 kJ of heat and exhausts 71.8 kJ of heat in each cycle. What is the efficiency of the engine?

Tries 0/12

How much work is done in a cycle?

Answer 1

Answer #1

(a)

formula for efficiency is

e = 1- QC/QH

= 1- 71.8/84.5

= 0.15 or 15 %

(b)

W = e QH = 0.15029 (84.5 kJ) = 12.7 kJ

Answer 2

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