In an alternator running with a balanced zero p.f. lagging load, phase differernc between the resultant armature flux and main field flux is always____? options is 180 degree....why?? explain.

1 Answers   BREB,

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I have a shop heater with a 1/3 hp capacitor start, induction motor driving the fan. Intermittently, the fan motor speeds up significantly for several seconds (15-60 sec) then slows to normal operating speed. The manufacturer suggested changing the capacitor which made no sense, but I did it to no avail. Could this possibly be caused by the centrifugal switch intermittently reconnecting the start winding?

1 Answers  

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What is triac?

3 Answers   NTPC,

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No load test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D rotor reactance

1 Answers  

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Transformer diagram mention each parts ?

0 Answers  

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what is the function of rccb how it diffrentiate between elcb

1 Answers  

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Can we use MCCB with Auxiliary Contact in place of Contactor in a AMF System.

1 Answers   C&S, Farnek,

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What is the main use of rotary phase converter ?

0 Answers  

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tell me about sf6 breakers

4 Answers  

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can we use NPT glands in LT panel

0 Answers  

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operation of protection relay watchdog contact?

0 Answers   L&T,

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what is skin effect?

4 Answers  

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