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