All the reversible engines have the same efficiency.

All the reversible and irreversible engines have the same efficiency.

Irreversible engines have maximum efficiency.

All engines are designed as reversible in order to obtain maximum efficiency.

same

lower

higher

none of these

1/27th

1/93th

1/173th

1/273th

kJ

kJ/kg

kJ/m²

kJ/m³

Correct

Incorrect