Classify 4he folowing pasevertile and \"irreversible\". E^plain o you, answer. %

Question

Classify 4he folowing pasevertile and "irreversible". E^plain o you, answer. %' n"1"vote tkefact that heat can be transferred only fron, Lot ectto col..e Heatiog a gas at constaot voune with an externg/ heet Soorce. Cooling o gas at constant volome with an ex tern«l heat si»k Ver ver slow compression in a the ins ted ylhoder wilk, friction les pistor novement Rapid conpreien in thermally insulated cz'inder with frictio·less isto movenent spinning of a Propeller in an a^ia batic chamber with a mova ble frietionles pistoa. Heat transfer from a hot rzto fou a static wall

Explanation / Answer

a) Reversible. Because the gas the pressure decreases gradually as it looses its to its surroundings.

b)Reversible. Because the gas can be heated againg using an external heat source.

c)Reversible. Since it is well insulated and the piston is frictionless, the pressure is contained.

d)Irreversible.

e)Irreversible.

f)Irreversible since heat only transfer from hot bodies to cold and not the other way around.

g)Irreversible.

h)Irreversible

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