CHAPTER 4: THERMODYNAMIC CYCLES & SECOND LAW OF THERMODYNAMICS

Front

What does the Second Law of Thermodynamics state about heat transfer?

Back

Heat naturally flows from hot to cold without external influence

Front

What is the formula for thermal efficiency (η) of a heat engine?

Back

η=W_net.out/Q_in

Front

A heat engine receives 200 kJ of heat and rejects 80 kJ. What is its thermal efficiency?

Back

60%

Front

Which of the following is true for a Carnot cycle?

Back

It consists of four reversible processes

Front

What is the COP (Coefficient of Performance) formula for a refrigerator?

Back

COP_R=Q_L/W

Front

A Carnot engine operates between 600 K and 300 K. What is its thermal efficiency?

Back

50%

Front

What is the correct efficiency formula for an ideal Carnot cycle?

Back

η=(1−T_L/T_H)