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State and Path Variables, Functions

39.A carnot e...

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39.A carnot engine working as a refrigerator between 250K and 300K and 500 calorie of heat from the cold reservoir. Heat rejected by it to the hot reservoir is

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Q. A Carnot's engine works as a refrigerator between 250K and 300 K. If it receives 700 calories of heat from the reservoir at the lower temperature, then amount of heat rejected at the higher temperature is:

Q. A Carnot engine draws heat from a reservoir at 600 K and rejects heat to another reservoir at T K. This engine drives a reverse carnot refrigerator which absorbs heat from 200 K andrejects to T K. The total heat rejected to T K, if heat absorbed by the engine and refrigerator is same, is

Q. A Carnot's engine works as a refrigerator between

250 K

300 K

. If it receives

750 c a l

of heat from the reservoir at the lower temperature, the amount of heat rejected at the higher temperature is

Q. A Carnot engine

(C E - 1)

works between two temperature reservoirs

A

B

T_{A} = 900 K

T_{B} = 500 K .

A second Carnot engine

(C E - 2)

words between temperature reservoirs

B

C

T_{C} = 300 K

. In each cycle of

C E - 1

C E - 2

, all the heat rejected by

(C E - 1)

B

C E - 2

. For one cycle of operation, if the net

Q

C E - 1

A

150 M J

, the net heat rejected to reservoir

C

C E - 2

M J

Q. A carnot engine works as a refrigerator in between 250 K and 300 K. If it acquires 750 calories from heat source at low temperature, then what is the heat generated at higher temperature. (in calories) ?

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