1. Which of the following terms describes thermal energy transfer through direct contact between solid objects?

• Conduction

• Convection

• Radiation

The purpose of a Thermostatic expansion valve is to:

• control the flow of refrigerant into the evaporator

• increase the pressure of the refrigerant

• decrease the temperature of the refrigerant

• compress the refrigerant

Name 3 types of AC compressors.

• Reciprocating, Rotary, and Scroll

• Centrifugal, Axial, and Diagonal

• Piston, Screw, and Vane

• Hermetic, Semi-hermetic, and Open

A brief description of the operation of a compressor is:

• It increases the pressure of a gas by reducing its volume.

• It decreases the pressure of a gas by increasing its volume.

• It maintains the pressure of a gas without changing its volume.

• It changes the temperature of a gas without affecting its pressure.

11. Which of the following summarises the relevant provisions of regulation: EC 842-2006, 2006/40/EC?

• Regulation EC 842-2006 focuses on certain fluorinated greenhouse gases, while 2006/40/EC deals with emissions from air conditioning systems in motor vehicles.

• Regulation EC 842-2006 deals with emissions from air conditioning systems in motor vehicles, while 2006/40/EC focuses on certain fluorinated greenhouse gases.

• Both regulations focus on emissions from air conditioning systems in motor vehicles.

• Both regulations focus on certain fluorinated greenhouse gases.

12. The meaning of GWP is:

• Global Warming Potential

• Gross World Product

• Generalized Work Plan

• Global Water Partnership

With regards to GWP, 700g of R134a is the equivalent of _______ of CO2.

• 10g

• 600g

• 1 Metric Ton

• 500kg

14. What date was the Montreal protocol enforced?

• January 1, 1989

• September 16, 1987

• January 1, 1987

• September 16, 1989

Which of the following refrigerants has the lowest Global Warming Potential (GWP)?

• R-1234yf

• R-134a

• R-410A

• R-32

Which component in an air conditioning system is responsible for releasing absorbed heat to the outside environment?

• Evaporator

• Condenser

• Compressor

• Thermostatic expansion valve