Operate Alternators, Generators. Test 18
Operate Alternators, Generators. Test 18
What is the purpose of thermistors fitted to motor windings?
A six pole 50Hz three phase induction motor has a full load at 950 rpm. What will the speed of the motor be at half load?
How would you test the insulation on an AC motor?
Which area of the DC generator requires the most maintenance?
When synchronising a generator what does clockwise movement of the synchronising dial indicate?
Sparking and grooving of the commutator in a DC motor may be caused by _____
When would you undertake resistance tests on an AC motor?
A motor controlled by thyristors is to be tested. What precautions would you take ?
Two generators are running in parallel. Generator one is delivering 300 Amps more than the second generator. What is the best course of action ?
Why are alternator poles fabricated in laminated form?
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