Electrical For Air Conditioning Flashcards
Hvac definition
In a transformer the ___ winding is the winding to which voltage is supplied and is considered the load side of the transformer
Primary
In a transformer the ___ winding is the winding to which the output voltage is supplied and is considered the source side of the transformer
Secondary
When a technician is taking a volt reading across a close switch in an energize circuit, what should the reading be?
0
When a technician is taking a volt reading across an open switch in an energize circuit, what should the reading be?
Source voltage
When a technician is taking an ohm reading across close switch, what should the reading be?
0
When a technician is taking an ohm reading across an open switch, what should the reading be?
0L
When using a low voltage T sat for heating and cooling, when would there be a jumper between Rh and Rc?
When using a single transformer system
What is the most common type of T sat in the HVAC industry?
Low voltage
A relay activated by current running directly through it
Current
Relay that uses electronic devices for switching
Solid state
Relay whose operation is based on CEMF
Potential
A device use to change one form of energy into another form is
Transducer
Measured information used to determine what action needs to be taken?
Feedback
Required in the start winding to energize a potential relay coil
Pick up voltage
Electronic relay that uses a thermistor to control the motor circuit
Positive temperature coefficient
