Which device distributes heat via duct work through registers
Baseboard heater
Unit heater
Electric furnace
Heating cable swt
What is installed directly in up flow vertical duct, or plenum that is intended to be the primary source of heat
Duct heater
Plenum heater
Domestic water heater
Which section of the CEC deals with installation of heating units?
Section 12
Section 16
Section 46
Section 62
Temperature is a measure of
Average kinetic energy in air
Total amount of heat in a substance
Average amount of heat in a substance
An object’s thermal intensity
A BTU is
Heat energy required to raise the temperature of a litre of water 1F
Heat energy required to raise the temperature of a pound of water 1F
Heat energy required to raise to raise the temperature of a pound of water 1C
Heat energy required to raise the temperature of a litre of water 1C
Heat transferred by electromagnetic wave motion by which we receive heat from the sun is through?
Conduction
Convection
Radiation
HVAC units
The heat exchanger is a
Steel enclosure
Evaporator unit
Condenser unit
Thermal expansion valve
What is usually provided on the intake side of the fan in the return air system?
Supply plenum
Power supply filter
Filter
Flue of stack
The function of the refrigeration cycle is to
Removes heat from a low temp body delivers it to a high temp body
Removes heat from a high temp body and delivers it to a low temp body
Rejects energy to low temperature body
None of the above
Air conditioners and heat pumps cool a home by
Bringing cool air into a home
Removes heat from within a home
Neither one
Which part of the HVAC system is responsible for compressing the Freon
Compressor
Condenser
Evaporator
TX Valve
This type of compressor is completely sealed inside a metal housing and is not serviceable
Hermetic
Reciprocating
Scroll
Semi-hermetic
If the load on the evaporator changes, what type of valve can respond to the change and increase or decrease the flow accordingly
Automatic shut-off valve
ATV valve
TV Valve
TX valve
What is a fluid that changes readily from a liquid to a vapour or from a vapour to a liquid?
Refrigerant
Neon
Vapour
Xenon
A conventional condenser unit requires a liquid refrigerant which is also called?
Freon
Hydrogen
Helium
Carbon dioxide
What is the refrigerant state when it is going towards the condenser?
Low pressure
High pressure
Dry vapour
Temperature vapour
Which component pushes the hot gas to the finned condenser coil in the outdoor side of the air conditioner
Control valve
Evaporator thermal expansion valve
The receiver
The compressor
Two different pressures exist in the refrigeration cycle. The two components that separate the high-pressure side from the low-pressure side are
Compressor and TRX valve
Evaporator coil and TRX valve
Condenser coil and compressor
Compressor and receiver
In the cooling mode, what component is located inside the building?
The Condenser coils
The 4 way reversing valve
The evaporator
This law states that heat always from from a higher temperature to a lower temperature
OHM’s
Newton
Thermodynamics
Gay-Lussac’s
The amount of heat added to the liquid to make it saturated and change states is called?
Super heat
Heat energy
Latent heat
Transferred heat
Heat, that when added or removed, causes a change in temperature but not in state
Sensible heat
Low heat
Energy heat
Refrigerant lines are usually made from
Aluminum
Stainless steel
Cooper
Either a and c
What type of vents are usually used which can handle a wide range of temperatures?
Plastic
Metal
Steal
