Currently what is the highest capacity (MVA) of SPPg generator available in the market?
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what is the minning of propotional, integral, derivative ?
11KV electrical line going through the forest in cloudy night ,how can we find the direction of line.
5 Answers Bhel, Cesco, HZL, Nesco,
What is difference between Over Current & Earth Fault protection?
Tell me in detail about c.t. And p.t. ?
What is DC power factor??
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
In synchronous generators field is rotor and armature is stator.Can we take the output at the rotor in case of synchronous generator by the dc excitation on the stator?
what is the difference between relay and a contactor.
Now I inject 1kv DC supply r&y=??? R&Y=?? Y&B=?? B&R=???? RYB&N=??? RYBN&E=????? Minimum value====???????
why we still use sinusoidal waveforms for transmission and utilisation (we know generation is sinusoidal), instead of other ac waveforms such as triangle, sawtooth, square etc.,? is there any mathematical derivations to prove sinusoidal is efficient than others?
what is the difference between real and reactive power? and what is the importance of these
what is the different beetween kva and kwh?