Answer / raghavansa

lagging/leading current means current lag/lead voltage.
Induction load like motors take lagging current. Capacitive
load like power capacitor takes leading current. Resistive
load like heaters in phase. If current is lagging, Power
factor is lagging.

cab we add capacitor bank with generator to improve power factor or not??????

1 Answers  

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diff between synchronous gen and alternators

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Just a silly question but just to make my curious mind bac to normal - Why was not 67 and 67N relays built into a single relay as i have noticed that the R,Y,B CT wiring end up into the 67 relay while the common of the R,Y,B CT wiring end up into the 67N relay. Then it was better if a single relay was manufactured just like the distance relay (21). Another question i would like to ask is - how do we know where the 67 and 67 N relay has to be placed.why is it not placed at the transformer bay? In the substaion that i am working -i have noticed that it is placed between a breaker and a common double bus bar and this line bay is connected to another substation at a remote place which is furthur connected to a load. B U S______CT for 67 & 67N ______Breaker _____ remot s/s. B A R

1 Answers  

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what is sinwave ups

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what is softstarter? explain briefly where it is used?

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Why the airgap of an induction motor is less compared to that of a synchronous machine?

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why dc series motor has high starting torque

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what is high - pot test. what's its use?????

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Ammeter of 1 ohm resistance measure max 10 ohm to measure higher resistance from it

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Please brief working principle & construction of permanent magnet AC Servo motor

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