Thermal Physics Quiz: Key Concepts

Which of the following is an example of a thermodynamic cycle?

• Carnot cycle

• Newton's cycle

• Ohm's cycle

• Pascal's cycle

What is the primary function of a heat engine?

• To convert electrical energy into mechanical energy

• To convert thermal energy into mechanical work

• To convert mechanical energy into thermal energy

• To store thermal energy

Which of the following is a reversed heat cycle?

• Otto cycle

• Diesel cycle

• Refrigeration cycle

• Rankine cycle

What does COP stand for in the context of thermodynamics?

• Coefficient of Power

• Coefficient of Performance

• Coefficient of Pressure

• Coefficient of Potential

In a heat engine, what is the term used to describe the ratio of work output to heat input?

• Efficiency

• Power

• Entropy

• Capacity

Which of the following statements is true about the Carnot cycle?

• It is the most efficient cycle for converting heat into work.

• It is the least efficient cycle for converting heat into work.

• It operates only at absolute zero temperature.

• It is not a reversible cycle.

What is the typical unit of measurement for the Coefficient of Performance (COP) of a heat pump?

• Joules

• Watts

• It has no units

• Pascals

Which of the following describes a process where a heat engine operates in reverse?

• Heat transfer

• Refrigeration cycle

• Adiabatic process

• Isothermal process

If a heat engine absorbs 500 J of heat and does 300 J of work, what is its efficiency?

• 0.2

• 0.4

• 0.6

• 0.8

Which of the following is true for an ideal heat engine?

• It has 100% efficiency

• It operates without any energy loss

• It converts all input energy into work

• It cannot have 100% efficiency due to the second law of thermodynamics