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Standard XII
Chemistry
State and Path Variables, Functions
39.A carnot e...
Question
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
and
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
and
B
, where
T
A
=
900
K
and
T
B
=
500
K
.
A second Carnot engine
(
C
E
−
2
)
words between temperature reservoirs
B
and
C
, where
T
C
=
300
K
. In each cycle of
C
E
−
1
and
C
E
−
2
, all the heat rejected by
(
C
E
−
1
)
to reservoir
B
is used by
C
E
−
2
. For one cycle of operation, if the net
Q
absorbed by
C
E
−
1
from reservoir
A
is
150
M
J
, the net heat rejected to reservoir
C
by
C
E
−
2
(in
M
J
) is
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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