148611 The efficiency of a Carnot engine is $60 \%$. If the temperature of source is $127^{\circ} \mathrm{C}$. The sink must be maintained at

148615 Efficiency of engine working at $40^{\circ} \mathrm{C}$ and $20^{\circ} \mathrm{C}$ is

148617 The Carnot heat engine have an efficiency of $\mathbf{5 0} \%$. The temperature of sink is maintained at $500 \mathrm{~K}$. To increase the efficiency upto $80 \%$, the increment in the source temperature is

148618 The following figure shows a Carnot engine that works between temperatures $T_{1}=400 \mathrm{~K}$ and $T_{2}=200 \mathrm{~K}$ and drives a Carnot refrigeration that works between temperatures $T_{3}=350 \mathrm{~K}$ and $T_{4}=250 \mathrm{~K}$. The quantity $\frac{\mathrm{Q}_{3}}{\mathrm{Q}_{1}}$ will be

148611 The efficiency of a Carnot engine is $60 \%$. If the temperature of source is $127^{\circ} \mathrm{C}$. The sink must be maintained at

148615 Efficiency of engine working at $40^{\circ} \mathrm{C}$ and $20^{\circ} \mathrm{C}$ is

148617 The Carnot heat engine have an efficiency of $\mathbf{5 0} \%$. The temperature of sink is maintained at $500 \mathrm{~K}$. To increase the efficiency upto $80 \%$, the increment in the source temperature is

148618 The following figure shows a Carnot engine that works between temperatures $T_{1}=400 \mathrm{~K}$ and $T_{2}=200 \mathrm{~K}$ and drives a Carnot refrigeration that works between temperatures $T_{3}=350 \mathrm{~K}$ and $T_{4}=250 \mathrm{~K}$. The quantity $\frac{\mathrm{Q}_{3}}{\mathrm{Q}_{1}}$ will be

148611 The efficiency of a Carnot engine is $60 \%$. If the temperature of source is $127^{\circ} \mathrm{C}$. The sink must be maintained at

148615 Efficiency of engine working at $40^{\circ} \mathrm{C}$ and $20^{\circ} \mathrm{C}$ is

148617 The Carnot heat engine have an efficiency of $\mathbf{5 0} \%$. The temperature of sink is maintained at $500 \mathrm{~K}$. To increase the efficiency upto $80 \%$, the increment in the source temperature is

148618 The following figure shows a Carnot engine that works between temperatures $T_{1}=400 \mathrm{~K}$ and $T_{2}=200 \mathrm{~K}$ and drives a Carnot refrigeration that works between temperatures $T_{3}=350 \mathrm{~K}$ and $T_{4}=250 \mathrm{~K}$. The quantity $\frac{\mathrm{Q}_{3}}{\mathrm{Q}_{1}}$ will be

148611 The efficiency of a Carnot engine is $60 \%$. If the temperature of source is $127^{\circ} \mathrm{C}$. The sink must be maintained at

148615 Efficiency of engine working at $40^{\circ} \mathrm{C}$ and $20^{\circ} \mathrm{C}$ is

148617 The Carnot heat engine have an efficiency of $\mathbf{5 0} \%$. The temperature of sink is maintained at $500 \mathrm{~K}$. To increase the efficiency upto $80 \%$, the increment in the source temperature is

148618 The following figure shows a Carnot engine that works between temperatures $T_{1}=400 \mathrm{~K}$ and $T_{2}=200 \mathrm{~K}$ and drives a Carnot refrigeration that works between temperatures $T_{3}=350 \mathrm{~K}$ and $T_{4}=250 \mathrm{~K}$. The quantity $\frac{\mathrm{Q}_{3}}{\mathrm{Q}_{1}}$ will be