An ideal heat engine operates between `177^@C` and `27^@C` If this engine takes `5xx10^5` Joule of heat from the source, how much work does it perform?

If a carnot engine operators between 27^@C and 127^@C then it’s efficiency is_____.

If a carnot engine is working between temperatures 27^@C and 227^@C , what is its efficiency ?

Total area of glass - planes of the window in a room is 10 m^2 and thickness is 2mm .Temperature outside and inside of the room are respectively 5^@ C and 20^@C . What is the amount of heat in calories flowing out of windows of the room per minute ? K for glass - 0.84 in mks system

A Carnot engine works between 1000 K and 250 K. It is required to increase the efficiency to 85% . By how much should the temperature (1) of the source alone be changed (2) sink alone be changed to get the desired result ?

A locomotive engine operates between a boiler temperature of 100^@C and an outside temperature of 40^@C . Calculate the maximum fraction of heat from the boiler that can be transformed into mechanical work.