Consider a cycle followed by an engine (Fig. 12.6)1 to 2 is isothermal

1.	Consider a cycle followed by an engine (Fig. 12.6)1 to 2 is isothermal2 to 3 is adiabatic3 to 1 is adiabaticSuch 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
Answer» (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.

Consider a cycle followed by an engine (Fig. 12.6)1 to 2 is isothermal2 to 3 is adiabatic3 to 1 is adiabaticSuch 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

Answer»

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

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