Chapter4_revF3

What is the main concept of a thermodynamics cycle?

• Energy conservation

• Irreversible processes

• Constant pressure

• Variable temperature

What happens to the properties of a system at the end and beginning of a cycle?

• They remain the same

• They change

• They disappear

• They reverse

What type of energies are added or removed from a system during processes?

• Mechanical energy

• Electrical energy

• Chemical energy

• Heat and work

In which state of the thermodynamics cycle is low pressure liquid water fed into a pump?

• State 1

• State 2

• State 3

• State 4

What happens to water in the boiler during the thermodynamics cycle?

• It evaporates

• It solidifies

• It vaporizes

• It freezes

What is the purpose of the turbine in the thermodynamics cycle?

• To increase pressure

• To extract energy

• To reduce volume

• To cool the system

Where does the turbine exhaust enter in the thermodynamics cycle?

• Pump

• Condenser

• Generator

• Boiler

What is the unit of temperature used in the thermodynamics cycle?

• Rankine

• Celsius

• Fahrenheit

• Kelvin

What is the efficiency of a Carnot engine?

• 100%

• 50%

• 75%

• 25%