The heat reservoir of an ideal carnot engine is at 800K and its sink is at 400K. The amount of heat taken in it in one second to produce useful mechanical work at the rate of 750J is

A Carnot engine takes in heat from a reservoir of heat at 427^(@)C . How many calories of heat must it take from the reservoir in order to procuce useful mechanical work at the rate of 357 watt ?

A reversible engine takes in heat from a reservoir of heat at 527^(@)C , and gives out to the sink at 127^(@)C How many calories per second must it take from the reservoir in order to produce useful mechanical work at the rate of 750 wat t ? 1 cal. = 4.2J .

A Carnot engine takes in heat from a reservoir of heat at 427^circC and gives out heat to sink at 77^circC . How many clories per second must it take from the reservoir in order to produce useful mechanical work at the rate of 357 W?

A reversible engine takes heat from a reservoir at 527^(@)C and gives out to the sink at 127^(@)C. The engine is required to perform useful mechanical work at the rate of 750 watt. The efficiency of the engine is

A reversible engine takes heat from a reservoir at 527^(@)C and gives out to the sink at 127^(@)C. The engine is required to perform useful mechanical work at the rate of 750 watt. The efficiency of the engine is

A carnot engine working between 300K and 400K has 800 j of useful work . The amount of heat enegy supplied to the engine from the source is

A Carnot engine working between 300 Kand 400 K has 800 J of useful work. The amount of heat energy supplied to the engine from the source is

A Carnot engine working between 300 Kand 400 K has 800 J of useful work. The amount of heat energy supplied to the engine from the source is

The hot reservoir for a Carnot engine has a temperature of 890 K, while the cold reservoir has a temperature of 670 K. The heat input for this engine is 4800 J. The 670 K reservoir also serves as the hot reservoir for a second Carnot engine. This second engine uses the rejected heat of the first engine as input and extracts additional work from it. The rejected heat from the second engine goes into a reservoir that has a temperature of 420 K. Find the total work delivered by the two engines.