1.

A Carnot's engine operates with a source at 500 K & sink at 375 K. The engine consumes 600 k cal of heat in one cycle, the heat rejected to sink per cycle is:

Answer»

250 K cal
350 k cal
450 k cal
550 k cal.

Solution :`T_(1)=500 K, T_(2), =375 K`.
`Q_(1)=600 K cal Q_(2)=?`
SINCE `(T_(1))/(T_(2))=(Q_(1))/(Q_(2)) rArr Q_(2)=(T_(2)Q_(1))/(T_(1))`
`Q_(2)=(375xx600)/(500)=450 K cal`
THUS, correct CHOICE is (c ).


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