Calculate the efficiency of an engine whose working substance absorbs 3000 J of heat from the source and rejects 2000 J of heat to the sink.

Calculate the efficiency of an engine whose working substance absorbs

1.	Calculate the efficiency of an engine whose working substance absorbs 3000 J of heat from the source and rejects 2000 J of heat to the sink.
Answer» Solution :Heat ABSORBED from the SOURE `= Q_(1) = 3000 J` Heat rejected to the SINK` = Q_(2) = 2000 J` Efficiency `= ETA ( Q_(1) - Q_(2))/( Q_(2))= ( 3000 - 2000)/( 2000) = 0.5 = 50%`