Application wise, where we should use AC motors and where
we should DC motors?
sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder
Earth leakage relay basic knowledge principle
We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.
Lt trivector meter with ring type CT.Spec of meter are 3x240 v, -/5A. Ring ct spec. are 60/5A, line voltage- IL .66/3.0KV..what is the multiplying factor
what is the effect of constant power factor to the voltage regulation
what will happen at secondary side of transformer if i increase voltage at primary side?while V1*I1=V2*I2 will secondary voltage or current increase?
How many distance in distribution pole OR 33Kv line pole
i am using star-delta connections with reverse/forward direction motion of the 75hp induction motor.What should be the ratings of Main,Delta and Star contactors and why?
What happen if an alternator rotates in reverse direction?
we know that dc motors are more superior then three phase induction motors in torque generation though they are not much used in industries why?
why shoud in High tension cable( above11KV etc.,)a semiconducting material coating will be there on insulation?
two phases with neutral supply can be taken in 3C X 10 sq.mm cable .
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