371393
The efficiency of a Carnot engine which operates between the two temperatures \({T_1} = 500\;K\) and \({T_2} = 300\;K\) is
1 \(25\,\% \)
2 \(40\,\% \)
3 \(50\,\% \)
4 \(75\,\% \)
Explanation:
The efficiency of a Carnot engine is \(\eta=1-\dfrac{T_{2}}{T_{1}}\) Here, \({T_1} = 500\;K,\;{T_2} = 300\;K\) \(\therefore \eta = 1 - \frac{{300K}}{{500K}}\) \( = \frac{{200K}}{{500K}} = \frac{2}{5} = \frac{2}{5} \times 100\,\% = 40\,\% \)
KCET - 2015
PHXI12:THERMODYNAMICS
371394
A carnot engine has efficiency \(25 \%\). It operates between reservoirs of constant temperatures with temperature difference of \(80\;K\). What is the temperature of the cold reservoir?
371395
A carnot engine absorbs \(1000\;J\) of heat energy from a reservoir at \(127^\circ C\) and rejects \(600\;J\) of heat energy during each cycle. The efficiency of engine and temperature of sink will be:
371396
A carnot engine, having efficiency of \(\eta=\dfrac{1}{10}\) as heat engine, is used as a refrigerator. If the work done on the system is \(10\;J\), the amount of energy absorbed from the reservoir at lower temperature is
1 \(90\;J\)
2 \(99\;J\)
3 \(100\;J\)
4 \(1\;J\)
Explanation:
So \(90\;J\) heat is absorbed at lower temperature.
371393
The efficiency of a Carnot engine which operates between the two temperatures \({T_1} = 500\;K\) and \({T_2} = 300\;K\) is
1 \(25\,\% \)
2 \(40\,\% \)
3 \(50\,\% \)
4 \(75\,\% \)
Explanation:
The efficiency of a Carnot engine is \(\eta=1-\dfrac{T_{2}}{T_{1}}\) Here, \({T_1} = 500\;K,\;{T_2} = 300\;K\) \(\therefore \eta = 1 - \frac{{300K}}{{500K}}\) \( = \frac{{200K}}{{500K}} = \frac{2}{5} = \frac{2}{5} \times 100\,\% = 40\,\% \)
KCET - 2015
PHXI12:THERMODYNAMICS
371394
A carnot engine has efficiency \(25 \%\). It operates between reservoirs of constant temperatures with temperature difference of \(80\;K\). What is the temperature of the cold reservoir?
371395
A carnot engine absorbs \(1000\;J\) of heat energy from a reservoir at \(127^\circ C\) and rejects \(600\;J\) of heat energy during each cycle. The efficiency of engine and temperature of sink will be:
371396
A carnot engine, having efficiency of \(\eta=\dfrac{1}{10}\) as heat engine, is used as a refrigerator. If the work done on the system is \(10\;J\), the amount of energy absorbed from the reservoir at lower temperature is
1 \(90\;J\)
2 \(99\;J\)
3 \(100\;J\)
4 \(1\;J\)
Explanation:
So \(90\;J\) heat is absorbed at lower temperature.
371393
The efficiency of a Carnot engine which operates between the two temperatures \({T_1} = 500\;K\) and \({T_2} = 300\;K\) is
1 \(25\,\% \)
2 \(40\,\% \)
3 \(50\,\% \)
4 \(75\,\% \)
Explanation:
The efficiency of a Carnot engine is \(\eta=1-\dfrac{T_{2}}{T_{1}}\) Here, \({T_1} = 500\;K,\;{T_2} = 300\;K\) \(\therefore \eta = 1 - \frac{{300K}}{{500K}}\) \( = \frac{{200K}}{{500K}} = \frac{2}{5} = \frac{2}{5} \times 100\,\% = 40\,\% \)
KCET - 2015
PHXI12:THERMODYNAMICS
371394
A carnot engine has efficiency \(25 \%\). It operates between reservoirs of constant temperatures with temperature difference of \(80\;K\). What is the temperature of the cold reservoir?
371395
A carnot engine absorbs \(1000\;J\) of heat energy from a reservoir at \(127^\circ C\) and rejects \(600\;J\) of heat energy during each cycle. The efficiency of engine and temperature of sink will be:
371396
A carnot engine, having efficiency of \(\eta=\dfrac{1}{10}\) as heat engine, is used as a refrigerator. If the work done on the system is \(10\;J\), the amount of energy absorbed from the reservoir at lower temperature is
1 \(90\;J\)
2 \(99\;J\)
3 \(100\;J\)
4 \(1\;J\)
Explanation:
So \(90\;J\) heat is absorbed at lower temperature.
371393
The efficiency of a Carnot engine which operates between the two temperatures \({T_1} = 500\;K\) and \({T_2} = 300\;K\) is
1 \(25\,\% \)
2 \(40\,\% \)
3 \(50\,\% \)
4 \(75\,\% \)
Explanation:
The efficiency of a Carnot engine is \(\eta=1-\dfrac{T_{2}}{T_{1}}\) Here, \({T_1} = 500\;K,\;{T_2} = 300\;K\) \(\therefore \eta = 1 - \frac{{300K}}{{500K}}\) \( = \frac{{200K}}{{500K}} = \frac{2}{5} = \frac{2}{5} \times 100\,\% = 40\,\% \)
KCET - 2015
PHXI12:THERMODYNAMICS
371394
A carnot engine has efficiency \(25 \%\). It operates between reservoirs of constant temperatures with temperature difference of \(80\;K\). What is the temperature of the cold reservoir?
371395
A carnot engine absorbs \(1000\;J\) of heat energy from a reservoir at \(127^\circ C\) and rejects \(600\;J\) of heat energy during each cycle. The efficiency of engine and temperature of sink will be:
371396
A carnot engine, having efficiency of \(\eta=\dfrac{1}{10}\) as heat engine, is used as a refrigerator. If the work done on the system is \(10\;J\), the amount of energy absorbed from the reservoir at lower temperature is
1 \(90\;J\)
2 \(99\;J\)
3 \(100\;J\)
4 \(1\;J\)
Explanation:
So \(90\;J\) heat is absorbed at lower temperature.