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[Show more]Current flow - flow of electrons in a circuit 
Impeadance - opposition to alternating current flow 
any material that will readily release electrons - conductor 
the symbol for current - I 
best material suited for a semi-conductor - silicone 
type of charge an electron has - negative 
resistance - ...
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Add to cartCurrent flow - flow of electrons in a circuit 
Impeadance - opposition to alternating current flow 
any material that will readily release electrons - conductor 
the symbol for current - I 
best material suited for a semi-conductor - silicone 
type of charge an electron has - negative 
resistance - ...
A gas furnace to be installed in a garage. The national standards requires that the burners and ignition 
must be located ____ above the floor: - Answer-18 inches 
A good description of how a bi-metal fan switch operates the blower motor on a gas furnace is: - 
Answer-Temperature on/ Temperature off...
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Add to cartA gas furnace to be installed in a garage. The national standards requires that the burners and ignition 
must be located ____ above the floor: - Answer-18 inches 
A good description of how a bi-metal fan switch operates the blower motor on a gas furnace is: - 
Answer-Temperature on/ Temperature off...
1. A gas furnace is to be installed in a garage. The burners and ignition sources must be located ______ 
above the floor. 
A: 6 inches 
B: 12 inches 
C: 18 inches 
D: 24 inches - Answer-C: 18 inches 
2. A good description of how hi-metai fan switch operates the blower motor on a gas furnace is: 
A:...
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Add to cart1. A gas furnace is to be installed in a garage. The burners and ignition sources must be located ______ 
above the floor. 
A: 6 inches 
B: 12 inches 
C: 18 inches 
D: 24 inches - Answer-C: 18 inches 
2. A good description of how hi-metai fan switch operates the blower motor on a gas furnace is: 
A:...
1. An air-to-air heat pump has many of the same components as an air conditioning system. The major 
difference is that a heat pump also has a (an); - Answer-C: reversing valve. 
2. What is the difference between "demand defrost" and "timed defrost?" - Answer-D: demand defrost 
only happens when...
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Add to cart1. An air-to-air heat pump has many of the same components as an air conditioning system. The major 
difference is that a heat pump also has a (an); - Answer-C: reversing valve. 
2. What is the difference between "demand defrost" and "timed defrost?" - Answer-D: demand defrost 
only happens when...
Heat which causes a change in temperature of a substance is called - Answer-Sensible Heat 
Heat added to a substance without a rise in temperature is called - Answer-Latent Heat 
Heat added to refrigerant in a vapor state after the evaporation process is called - Answer-Superheat 
A scroll compresso...
Preview 2 out of 9 pages
Add to cartHeat which causes a change in temperature of a substance is called - Answer-Sensible Heat 
Heat added to a substance without a rise in temperature is called - Answer-Latent Heat 
Heat added to refrigerant in a vapor state after the evaporation process is called - Answer-Superheat 
A scroll compresso...
Heat which causes a change in temperature of a substance is called - Answer-Sensible heat 
Heat added to a substance without a rise in temperature - Answer-Latent heat 
Heat added to the refrigerant in a vapor state after the evaporation process is called - Answer-Superheat 
Scroll compressor move r...
Preview 2 out of 9 pages
Add to cartHeat which causes a change in temperature of a substance is called - Answer-Sensible heat 
Heat added to a substance without a rise in temperature - Answer-Latent heat 
Heat added to the refrigerant in a vapor state after the evaporation process is called - Answer-Superheat 
Scroll compressor move r...
What is current flow? - Answer-D.The flow of electrons in a circuit 
What is impedance? - Answer-A.Opposition to alternating current 
Like charges will - Answer-B.Repel each other 
Any material that will readily release electrons is called: - Answer-B.A conductor 
The symbol for current is: - Answer...
Preview 2 out of 9 pages
Add to cartWhat is current flow? - Answer-D.The flow of electrons in a circuit 
What is impedance? - Answer-A.Opposition to alternating current 
Like charges will - Answer-B.Repel each other 
Any material that will readily release electrons is called: - Answer-B.A conductor 
The symbol for current is: - Answer...
An air-to-air heat pump has many of the same components as an air conditioning system. The major 
difference is that a heat pump also has an - Answer-Reversing valve 
What is the difference between "demand defrost" and "timed defrost"? - Answer-Demand defrost 
happens only when needed and timed ...
Preview 2 out of 10 pages
Add to cartAn air-to-air heat pump has many of the same components as an air conditioning system. The major 
difference is that a heat pump also has an - Answer-Reversing valve 
What is the difference between "demand defrost" and "timed defrost"? - Answer-Demand defrost 
happens only when needed and timed ...
Heat which is added to a vapor after the change of state occurs is called - Answer-superheat 
A refrigerant gives up heat when; - Answer-it condenses 
it is desirable for refrigerant in the suction line to be slightly superheated in order to... - Answer-ensure 
liquid refrigerant does not enter the ...
Preview 2 out of 8 pages
Add to cartHeat which is added to a vapor after the change of state occurs is called - Answer-superheat 
A refrigerant gives up heat when; - Answer-it condenses 
it is desirable for refrigerant in the suction line to be slightly superheated in order to... - Answer-ensure 
liquid refrigerant does not enter the ...
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