HVACR Quiz 02001

Heat energy moves from a zone of high heat to a zone of low heat is represented by which of the following?

• 1st law of Thermodynamics

• 2nd law of Thermodynamics

• 3rd law of Thermodynamics

• None of the above

Inspection of fan blades for dirt, wear & damage is an example of:

• Preventive Maintenance

• Corrective Maintenance

• Mechanical Maintenance

• None of the above

The formula p1 x V1=p2 x V2 represents?

• Charles's Law

• Ideal Gas Law

• Boyle's Law

• None of the above

The state of matter with the lowest energy level is:

• Gas

• Liquid

• Solid

• Plasma

A refrigerant's enthalpy is:

• The heat required to vaporize it

• The total amount of heat in the refrigerant

• The heat required to melt it

• None of the above

The SI unit of mass (and weight) used today is?

• Gram

• Pound

• Kilogram

• Ounce

An air control system that maintains temperature, humidity, air movement & cleanliness is an example of:

• Ventilation

• Air Conditioning

• Heating

• Refrigeration

It is important to the HVACR technician to understand the changes of state of matter because:

• It affects energy efficiency

• It is required for safety

• The cooling and heating process requires a change of state of matter in some form

• None of the above

In the compression refrigeration cycle, the refrigerant is superheated:

• Entering the evaporator

• Leaving the evaporator, through the compressor, up to the condenser

• In the condenser

• None of the above

Make up air units that use an exposed flame within the air stream flowing into the conditional space are defined as:

• Indirect Fired

• Direct Fired

• Electric

• None of the above