Electric Final Flashcards
What charactist of electricity is used to create moving in an electric motor
Electromagnetism
If electric load in the resistant circuit remains the same and the resistant increase, what would the current do
Decrease
If the potential in a resistance remains the same and the resistance increase, what would the current do?
Decrease
what is the typical result of exes current in a circuit
current will cause too much heat, causing a potential hazard and definitely a short circuited.
What limits the current the voltage can move
Resistance
What is normally done to a current caring wire to a obtain sufficient magnetism to do useful work
Make a coil/ coil the wire
most control circuits have only one load but as many switches as engineer wants to design them
True or true
True
Electrical switches are normally shown on the position they will be in with no electrical force, on the opening coil
True
when troubleshooting electrical systems, it isn’t too important that you know how the unit works
Hahahahaa false
What is the purpose of a capacitor in a single phase motor
efficienc, start and cost
why is the startup usually smaller than the run cap
because the start cap has to just start the motor
what two electrical meters are a must for HVAC tech
voltmeter and ohmmeter
Name a third meter that can be very useful
clamp on anmeter
If you clamp on Anmeter is not reading currents below 5 amps, how can you read currents below 5 amps,
Coil the wire around the anmeter leg and devide the reading by the number of turns
Explain briefly a method of checking capacitors with a non ranging anmeter ohmeter?
Use analog meter/ discharge
