Sarthaks Test
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Consider a cycle followed by an engine (Fig. 12.6)

1 to 2 is isothermal

2 to 3 is adiabatic

3 to 1 is adiabatic

Such a process does not exist because

(a) heat is completely converted to mechanical energy in such a process, which is not possible.

(b) mechanical energy is completely converted to heat in this process,which is not possible.

(c) curves representing two adiabatic processes don’t intersect.

(d) curves representing an adiabatic process and an isothermal process don’t intersect

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(a) heat is completely converted to mechanical energy in such a process, which is not possible.

(c) curves representing two adiabatic processes don’t intersect.

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