Review EG 10 - 11

A visually engaging illustration representing thermodynamics concepts, featuring heat engines, energy transfer, and thermal equilibrium in a vibrant, educational style.

Thermodynamics Mastery Quiz

Test your understanding of thermodynamics principles with our engaging quiz! Designed for students and enthusiasts alike, this quiz covers key concepts such as heat engines, thermal equilibrium, and efficiency.

Challenge yourself with questions that include:

  • Energy transfer in closed systems
  • Behavior of water at varying temperatures
  • Real-world applications of thermodynamics
10 Questions2 MinutesCreated by CalculatingHeat42
In a closed system, what will occur if Object A and Object B have different temperatures?
Energy transfer
Increase in energy
Increase in temperature
Change in temperature
Three cups with the same amount of water are in a room with an ambient temperature of 25°C. Cups A, B and C have initial temperatures of 60°C, 50°C and 40°C, respectively. Which cup will most quickly reach its final temperature?
Cup A
Cup B
Cup C
All cups will reach their final temperature at the same time
For thermal equilibrium to happen, what must be the condition of System A, System B and System C?
Systems A, B, and C must have the same temperature
System A and System B must have the same temperature
System B and System C must have the same temperature
System C and System A must have the same temperature
A heat engine, in each cycle, does positive work and loses energy as heat, with no heat energy input. Which law of thermodynamics does the heat engine violate?
Zeroth Law of Thermodynamics
First Law of Thermodynamics
Second Law of Thermodynamics
Third Law of Thermodynamics
Which of the following is an engine that violates the second law of thermodynamics?
An engine that is less efficient than a Carnot engine.
An engine that changes all of its mechanical work into heat.
An engine that operates in a cycle with two isotherms and two adiabats.
An engine that changes all the heat from the source to mechanical energy.
How does a refrigerator exhaust heat to a warmer place?
The vaporization of the refrigerant liquid absorbs energy.
The motor converts electrical energy into thermal energy.
The inside of the refrigerator is properly insulated from heat.
The compression of the refrigeration gas into liquid gives off heat.
A heat engine has a hot reservoir of 600 K and a sink of 300 K. What is its ideal efficiency?
2
0.5
0.8
50
Which of the following statements BEST describes how a geothermal power plant acts like a heat engine?
It converts heat energy from water into potential energy.
It directly uses heat from within Earth and converts it into electricity.
It uses steam turbines to convert electricity into mechanical energy.
It burns fossil fuel in the ground and uses its heat to generate electricity.
Which of the following is NOT a factor why machines can never be 100% efficient?
Heat loss
Time
Resistance
Friction
If 1 kWh is priced at 9 Php, and a family consumed 120 kWh of electricity for the past month. How much will they pay for it?
Php 1,080
Php 1,000
Php 13.33
Php 500
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