ELEC UNIT 14 Flashcards
1
Q
(14.1) What 3 areas do open-type motors fail?
A
windings, centrifugal switch, bearings.
2
Q
(14.1) What is the only area of a hermetic motor that can be checked?
A
the windings
3
Q
(14.2) how much voltage loss across a contactor is acceptable?
A
no more that 5% the line voltage
4
Q
(14.2) what does 0 resistance, infinite resistance, and some resistance mean on a coil of a contactor?
A
0 ohms means its shorted, infinite resistance means its open, some resistance means its probably good.
5
Q
(14.3) How do you troubleshoot a circuit breaker?
A
check the voltage on the load side of the circuit. if it reads line voltage, then its probably good.
