Which one is not a limitation of the Carnot cycle with air or gas as – McqOptions

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1.	Which one is not a limitation of the Carnot cycle with air or gas as refrigerant?
A.	It has low efficiency when working between two fixed temperature limits
B.	Machine has to run at high and low speeds during adiabatic and isothermal process. Such variation of speed is not possible
C.	Extreme pressure and large volume are developed
D.	It is not possible to carry out isothermal heat transfer process in practice
Answer» B. Machine has to run at high and low speeds during adiabatic and isothermal process. Such variation of speed is not possible

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