In a cyclic heat engine operating between a source temperature of 600C and a sink temperature of
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In a cyclic heat engine operating between a source temperature of 600°C and a sink temperature of 20°C , the least rate of heat rejection per kW net output of the engine is :
(a) 0.460 kW
(b) 0.505 kW
(c) 0.588 kW
(d) 0.650 kW
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