12097189
Descripción
Test por Kaitlyn Hickey, actualizado hace más de 1 año
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Creado por Kaitlyn Hickey
hace casi 7 años
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Pregunta 1
Pregunta
Which device distributes heat via duct work through registers
Respuesta
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Baseboard heater
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Unit heater
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Electric furnace
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Heating cable swt
Pregunta 2
Pregunta
What is installed directly in up flow vertical duct, or plenum that is intended to be the primary source of heat
Respuesta
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Duct heater
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Plenum heater
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Electric furnace
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Domestic water heater
Pregunta 3
Pregunta
Which section of the CEC deals with installation of heating units?
Respuesta
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Section 12
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Section 16
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Section 46
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Section 62
Pregunta 4
Pregunta
Temperature is a measure of
Respuesta
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Average kinetic energy in air
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Total amount of heat in a substance
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Average amount of heat in a substance
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An object’s thermal intensity
Pregunta 5
Pregunta
A BTU is
Respuesta
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Heat energy required to raise the temperature of a litre of water 1F
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Heat energy required to raise the temperature of a pound of water 1F
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Heat energy required to raise to raise the temperature of a pound of water 1C
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Heat energy required to raise the temperature of a litre of water 1C
Pregunta 6
Pregunta
Heat transferred by electromagnetic wave motion by which we receive heat from the sun is through?
Respuesta
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Conduction
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Convection
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Radiation
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HVAC units
Pregunta 7
Pregunta
The heat exchanger is a
Respuesta
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Steel enclosure
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Evaporator unit
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Condenser unit
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Thermal expansion valve
Pregunta 8
Pregunta
What is usually provided on the intake side of the fan in the return air system?
Respuesta
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Supply plenum
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Power supply filter
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Filter
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Flue of stack
Pregunta 9
Pregunta
The function of the refrigeration cycle is to
Respuesta
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Removes heat from a low temp body delivers it to a high temp body
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Removes heat from a high temp body and delivers it to a low temp body
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Rejects energy to low temperature body
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None of the above
Pregunta 10
Pregunta
Air conditioners and heat pumps cool a home by
Respuesta
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Bringing cool air into a home
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Removes heat from within a home
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Neither one
Pregunta 11
Pregunta
Which part of the HVAC system is responsible for compressing the Freon
Respuesta
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Compressor
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Condenser
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Evaporator
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TX Valve
Pregunta 12
Pregunta
This type of compressor is completely sealed inside a metal housing and is not serviceable
Respuesta
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Hermetic
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Reciprocating
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Scroll
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Semi-hermetic
Pregunta 13
Pregunta
If the load on the evaporator changes, what type of valve can respond to the change and increase or decrease the flow accordingly
Respuesta
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Automatic shut-off valve
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ATV valve
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TV Valve
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TX valve
Pregunta 14
Pregunta
What is a fluid that changes readily from a liquid to a vapour or from a vapour to a liquid?
Respuesta
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Refrigerant
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Neon
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Vapour
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Xenon
Pregunta 15
Pregunta
A conventional condenser unit requires a liquid refrigerant which is also called?
Respuesta
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Freon
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Hydrogen
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Helium
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Carbon dioxide
Pregunta 16
Pregunta
What is the refrigerant state when it is going towards the condenser?
Respuesta
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Low pressure
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High pressure
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Dry vapour
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Temperature vapour
Pregunta 17
Pregunta
Which component pushes the hot gas to the finned condenser coil in the outdoor side of the air conditioner
Respuesta
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Control valve
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Evaporator thermal expansion valve
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The receiver
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The compressor
Pregunta 18
Pregunta
Two different pressures exist in the refrigeration cycle. The two components that separate the high-pressure side from the low-pressure side are
Respuesta
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Compressor and TRX valve
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Evaporator coil and TRX valve
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Condenser coil and compressor
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Compressor and receiver
Pregunta 19
Pregunta
In the cooling mode, what component is located inside the building?
Respuesta
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The Condenser coils
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The 4 way reversing valve
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The compressor
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The evaporator
Pregunta 20
Pregunta
This law states that heat always from from a higher temperature to a lower temperature
Respuesta
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OHM’s
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Newton
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Thermodynamics
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Gay-Lussac’s
Pregunta 21
Pregunta
The amount of heat added to the liquid to make it saturated and change states is called?
Respuesta
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Super heat
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Heat energy
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Latent heat
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Transferred heat
Pregunta 22
Pregunta
Heat, that when added or removed, causes a change in temperature but not in state
Respuesta
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Latent heat
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Sensible heat
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Low heat
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Energy heat
Pregunta 23
Pregunta
Refrigerant lines are usually made from
Respuesta
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Aluminum
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Stainless steel
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Cooper
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Either a and c
Pregunta 24
Pregunta
What type of vents are usually used which can handle a wide range of temperatures?
Respuesta
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Plastic
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Metal
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Aluminum
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Steal
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