Question Answers

An ideal gas (2.0 moles ) is carried round a cycle as shown. If the process b to c is isothermal and Cv = 3 cal/mol/L. Determine (a) workdone, (b) change in internal energy, (c) heat supplied (b) change in internal energy (c) heat supplied An ideal gas (2.0 moles ) is carried round a [...]

A Carnot’s engine with a perfect gas acting as the working substance, is operated backwards and is employed to freeze water at 0 C. The engine is driven by a 200 W electric motor. Find the amount of water frozen A Carnot's engine with a perfect gas acting as the working substance is operated backwards [...]

A refrigerator is devised by operating a Carnot’s heat engine in the reverse direction. If the inside temperature is -10 C and that outside 30 C, find its coefficient of performance. A refrigerator is devised by operating a Carnot's heat engine in the reverse direction. If the inside temperature is -10 C and that outside [...]

An ideal Carnot’s engine works between temperatures 127C and -73C. Find, which of the two processes, increasing the temperature of source by 50C, or decreasing the temperature of sink by 50C, would result An ideal Carnot's engine works between temperatures 127C and -73C. Find increasing the temperature of source by 50C or decreasing the temperature [...]

A Carnot’s heat engine works between the temperatures 427C and 27C. What amount of heat should it consume per second to deliver mechanical work at the rate of 1 KW? A Carnot's heat engine works between the temperatures 427C and 27C. What amount of heat should it consume per second to deliver mechanical work at [...]

A Carnot’s heat engine works with an ideal monatomic gas, and an adiabatic expansion ratio 2. Determine its efficiency. A Carnot's heat engine works with an ideal monatomic gas and an adiabatic expansion ratio 2. Determine its efficiency. September 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

A Carnot’s engine operates with an efficiency of 40% with its sink at 27C. By what amount should the temperature of the source be increased with an aim to increase the efficiency by 10%? A Carnot's engine operates with an efficiency of 40% with its sink at 27C. By what amount should the temperature of [...]

Calculate the thermal efficiency of a Carnot’s heat engine working between ice and steam point. Calculate the thermal efficiency of a Carnot's heat engine working between ice and steam point. September 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

A heat engine receives 50 Kcal of heat from the source per cycle, and operates with an efficiency of 20%. Determine the work obtained from the engine and the heat rejected to the sink, per cycle. A heat engine receives 50 Kcal of heat from the source per cycle and operates with an efficiency of [...]

A motorcycle engine delivers a power of 10 kW by consuming petrol at the rate of 2.4 kg/hour. Estimate the efficiency of the engine and the rate of heat rejection by the exhaust, if the calorific value of petrol is A motorcycle engine delivers a power of 10 kW by consuming petrol at the rate [...]