Chapter4_revF1

What is the main function of a refrigerator in a household?

• Generate electricity

• Transfer heat from high-temperature to low-temperature

• Cooling the atmosphere

• Transfer heat from low-temperature to high-temperature

What is the working fluid used in a refrigeration system for Samuel's ice cream truck?

• R134a

• CO2

• Nitrogen

• Oxygen

What is the Coefficient of Performance (COP) related to in refrigeration devices?

• Efficiency of heating

• Efficiency of electricity generation

• Efficiency of work output

• Efficiency of cooling

What does the second law of thermodynamics state in a real-world scenario?

• Heat moves from hot to cold bodies

• Heat moves from cold to hot bodies

• Heat moves randomly

• Heat does not move spontaneously from cold to hot bodies

What is the main function of a turbine in a power plant?

• Work input

• Work extraction of electrical power generation

• Heat removal

• Heat addition

What is the primary function of a condenser in a refrigeration cycle?

• Heat addition

• Heat rejection

• Work input

• Work extraction

What is the purpose of a compressor in a refrigeration cycle?

• Heat addition

• Heat rejection

• Work input

• Work extraction

Which law of thermodynamics leads to the definition of entropy?

• Zeroth Law

• Third Law

• Second Law

• First Law

In which state does water enter the boiler and is vaporized at constant pressure in a thermodynamics cycle?

• State 1

• State 2

• State 4

• State 3