The speed of a dc motor can be controlled by the variation of
1. armature voltage. 2. field current. 3. armature circuit
resistance. 4. angle of brush shift.
Which of the statements given above are correct?
(a) 1,2 and 3 (b) 2,3 and 4
(c) 1,3 and 4 (d) 1,2 and 4
why pull the single core cable?
how to calculate the neautral earthing conductor size for a 500kva dg set.
How electrical power(MW)is varied OF an A.C Generator in response to varying steam input to a steam turbine ?
Power systems
What are the different condition monitoring techniques for a motor?
Between AC generator(alternator) and DC generator which can be designed for high voltage and why?
how to calculate the megger values for motors and cables?
what is the Auto Mains Failure Panel function in DG?state its function?
what is resistance
what is a tri vector meter? what are the tri vectors?
it is difficult to interrupt a capacitive current because (a)it has a leading power factor (b)current magnitude is very small (c)the restriking voltage can be high (d)stored energy in the capacitor is high
2 Answers DGVCL Dakshin Gujarat Vij Company, MGVCL, UGVCL Uttar Gujarat Vij Company Ltd,
When a capcitor is used on 440 v thenthis is kvar rating 25kvar .my question is that when we use this capcitor use 480 v &525 volt .how much kvar increase . Plz give my question ans. And give answer with formula .my mail id is rohitashsaini013@gmail.com
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