how to differentiate a mpcb,mcb with a contactor?
Explain their working operation
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how to calculate current and voltage in a same circuit?
whatdo mean by chopper fed drives.used for ac drives.
WHAT IS THE DIFFERENCE B/WDYNAMO&ALTERNATOR?
suppose we using 3 phase motor of 440 v means what range of C.T. is require for measuring current ?
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
Why Water motor is not taking a load or pressure while everything is correct. (Note: Motor running properly)
what happens to the speed of a DC series motor when series field winding is removed?
For Bus duct hi pot test, where we want to connect the return and ground leads?
If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)
Draw SLD for a panel has 500A Bus Bar rating, with 4 outgoing, each is 80 A (load current), showing the transformer and capacitor bank rating.
why there is a phase shift lies between primary and secondary voltages of a transformer?
why the substation require din electrical system?
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