In a two stage heat engine a quantity of heat Q_(1) is absorbed at a temperature T work W_(1) is done and a quantity of heat Q_(2) expelled at a lower temperature T_(2) by the first state. The second state absorbs the heat expelld by the first, does work W_(2) and expels a quanity of heat Q_(3) at a lower temperature T_(2) Calculate the effiency of the combination engine.

In a two stage heat engine a quantity of heat Q_(1) is absorbed at a t

1.	In a two stage heat engine a quantity of heat Q_(1) is absorbed at a temperature T work W_(1) is done and a quantity of heat Q_(2) expelled at a lower temperature T_(2) by the first state. The second state absorbs the heat expelld by the first, does work W_(2) and expels a quanity of heat Q_(3) at a lower temperature T_(2) Calculate the effiency of the combination engine.
Answer» ANSWER :`1-(T_(3))/(T_(1))`