Question 1 of 22
Hints left: 3
Q1
What happens to air density as temperature increases?
Q2
What type of cycle is used in an internal combustion engine?
Q3
What type of heat exchanger uses metal plates to transfer heat?
Q4
In a Rankine cycle, what is the working fluid typically?
Q5
Which cycle is used in gas turbines?
Q6
What is the main characteristic of an isothermal process?
Q7
What type of energy conversion occurs in a hydroelectric dam?
Q8
Which of the following is a non-renewable energy source?
Q9
What type of heat exchanger uses multiple plates to enhance heat transfer?
Q10
What is a common method for improving energy efficiency in buildings?
Q11
In which process does a refrigerant absorb heat?
Q12
What is the main benefit of using geothermal energy?
Q13
What is the main function of an air-handler in HVAC systems?
Q14
What phenomenon describes the energy required to change a substance's phase?
Q15
What type of fluid is typically used in hydraulic systems?
Q16
In a heat exchanger, what is the purpose of the fluids?
Q17
Which cycle is used in jet engines?
Q18
What happens to the energy of a system during a phase change?
Q19
Which fluid is commonly used in thermal power plants?
Q20
What is the purpose of a flow meter in a heating system?
Q21
What is the term for the energy needed to change the temperature of a material?
Q22
What is the main characteristic of a reversible process?