A Carnot engine operates between `200^(@)C` and `20^(@)C`. Its maximum possible efficiency is:

A Carnot engine works between 120^(@)C and 30^(@)C . Calculate the efficiency. If the power produced by the engine is 400W , calculate the heat abosorbed from the source.

If a carnot engine works between 127^(@)C and 527^(@)C then its efficiency is

If a Carnot engine works between 127^@C and 727^@C , then its efficiency is

An ideal Carnot's engine works between 227^(@)C and 57^(@)C . The efficiency of the engine will be

The efficiency of a Carnot engine operating between temperatures of 100^(@)C and -23^(@)C will be

One of the most efficient engines ever developed operates between 2100 K and 700 K. Its actual efficiency is 40%. What percentage of its maximum possible efficiency is this?

A Carnot engine work as refrigerator in between 0^(@)C and 27^(@)C . How much energy is needed to freeze 10 kg ice at 0^(@)C /

One of the most efficient engines ever developed operated between 2100K and 700K. Its actual efficiency is 40%. What percentage of its maximum possible efficiency is this?

A Carnot's engine is made to work between 200^(@)C and 0^(@)C first and then between 0^(@)C and -200^(@)C . The ratio of efficiencies of the engine in the two cases is

A carnot engine works between 200^(@)C and 0^(@)C first and then between 0^(@)C and -200^(@)C . Compare the values of efficiencies in the two cases.