148518 A Carnot engine with efficiency $50 \%$ takes heat from a source at $600 \mathrm{~K}$, In order to increase the efficiency to $70 \%$, keeping the temperature of sink same, the new temperature of the source will be.

148519 A Carnot engine operating between two reservoirs has efficiency $1 / 3$. When the temperature of cold reservoir raised by $x$, its efficiency decreases to $1 / 6$. The value of $x$, if the temperature of hot reservoir is $99^{\circ} \mathrm{C}$, will be

148520 A Carnot engine whose low temperature reservoir is at $350 \mathrm{~K}$ has an efficiency of $50 \%$ It is desired to increase this to $60 \%$. If the temperature of the low temperature reservoir remains constant, then the temperature of high temperature reservoir must be increased by how many degrees?

148522 A Carnot engine operating between temperatures $T_{1}$ and $T_{2}$ has efficiency 0.2 . When $T_{2}$ is reduced by $50 \mathrm{~K}$, its efficiency increases to 0.4 . Then, $T_{1}$ and $T_{2}$ are respectively

148524 A Carnot engine whose efficiency is $40 \%$, receives heat at $500 \mathrm{~K}$. If the efficiency is to be $\mathbf{5 0 \%}$, the source temperature for the same exhaust temperature is

148518 A Carnot engine with efficiency $50 \%$ takes heat from a source at $600 \mathrm{~K}$, In order to increase the efficiency to $70 \%$, keeping the temperature of sink same, the new temperature of the source will be.

148519 A Carnot engine operating between two reservoirs has efficiency $1 / 3$. When the temperature of cold reservoir raised by $x$, its efficiency decreases to $1 / 6$. The value of $x$, if the temperature of hot reservoir is $99^{\circ} \mathrm{C}$, will be

148520 A Carnot engine whose low temperature reservoir is at $350 \mathrm{~K}$ has an efficiency of $50 \%$ It is desired to increase this to $60 \%$. If the temperature of the low temperature reservoir remains constant, then the temperature of high temperature reservoir must be increased by how many degrees?

148522 A Carnot engine operating between temperatures $T_{1}$ and $T_{2}$ has efficiency 0.2 . When $T_{2}$ is reduced by $50 \mathrm{~K}$, its efficiency increases to 0.4 . Then, $T_{1}$ and $T_{2}$ are respectively

148524 A Carnot engine whose efficiency is $40 \%$, receives heat at $500 \mathrm{~K}$. If the efficiency is to be $\mathbf{5 0 \%}$, the source temperature for the same exhaust temperature is

148518 A Carnot engine with efficiency $50 \%$ takes heat from a source at $600 \mathrm{~K}$, In order to increase the efficiency to $70 \%$, keeping the temperature of sink same, the new temperature of the source will be.

148519 A Carnot engine operating between two reservoirs has efficiency $1 / 3$. When the temperature of cold reservoir raised by $x$, its efficiency decreases to $1 / 6$. The value of $x$, if the temperature of hot reservoir is $99^{\circ} \mathrm{C}$, will be

148520 A Carnot engine whose low temperature reservoir is at $350 \mathrm{~K}$ has an efficiency of $50 \%$ It is desired to increase this to $60 \%$. If the temperature of the low temperature reservoir remains constant, then the temperature of high temperature reservoir must be increased by how many degrees?

148522 A Carnot engine operating between temperatures $T_{1}$ and $T_{2}$ has efficiency 0.2 . When $T_{2}$ is reduced by $50 \mathrm{~K}$, its efficiency increases to 0.4 . Then, $T_{1}$ and $T_{2}$ are respectively

148524 A Carnot engine whose efficiency is $40 \%$, receives heat at $500 \mathrm{~K}$. If the efficiency is to be $\mathbf{5 0 \%}$, the source temperature for the same exhaust temperature is

148518 A Carnot engine with efficiency $50 \%$ takes heat from a source at $600 \mathrm{~K}$, In order to increase the efficiency to $70 \%$, keeping the temperature of sink same, the new temperature of the source will be.

148519 A Carnot engine operating between two reservoirs has efficiency $1 / 3$. When the temperature of cold reservoir raised by $x$, its efficiency decreases to $1 / 6$. The value of $x$, if the temperature of hot reservoir is $99^{\circ} \mathrm{C}$, will be

148520 A Carnot engine whose low temperature reservoir is at $350 \mathrm{~K}$ has an efficiency of $50 \%$ It is desired to increase this to $60 \%$. If the temperature of the low temperature reservoir remains constant, then the temperature of high temperature reservoir must be increased by how many degrees?

148522 A Carnot engine operating between temperatures $T_{1}$ and $T_{2}$ has efficiency 0.2 . When $T_{2}$ is reduced by $50 \mathrm{~K}$, its efficiency increases to 0.4 . Then, $T_{1}$ and $T_{2}$ are respectively

148524 A Carnot engine whose efficiency is $40 \%$, receives heat at $500 \mathrm{~K}$. If the efficiency is to be $\mathbf{5 0 \%}$, the source temperature for the same exhaust temperature is

148518 A Carnot engine with efficiency $50 \%$ takes heat from a source at $600 \mathrm{~K}$, In order to increase the efficiency to $70 \%$, keeping the temperature of sink same, the new temperature of the source will be.

148519 A Carnot engine operating between two reservoirs has efficiency $1 / 3$. When the temperature of cold reservoir raised by $x$, its efficiency decreases to $1 / 6$. The value of $x$, if the temperature of hot reservoir is $99^{\circ} \mathrm{C}$, will be

148520 A Carnot engine whose low temperature reservoir is at $350 \mathrm{~K}$ has an efficiency of $50 \%$ It is desired to increase this to $60 \%$. If the temperature of the low temperature reservoir remains constant, then the temperature of high temperature reservoir must be increased by how many degrees?

148522 A Carnot engine operating between temperatures $T_{1}$ and $T_{2}$ has efficiency 0.2 . When $T_{2}$ is reduced by $50 \mathrm{~K}$, its efficiency increases to 0.4 . Then, $T_{1}$ and $T_{2}$ are respectively

148524 A Carnot engine whose efficiency is $40 \%$, receives heat at $500 \mathrm{~K}$. If the efficiency is to be $\mathbf{5 0 \%}$, the source temperature for the same exhaust temperature is