Define heating time constant of electric motor.

3 Answers  

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WHEN TWO ALTERNATORS ARE OPERATING IN PARALLEL, EXPLAIN WHY IT IS OBJECTIONABLE TO OPERATE ONE AT A LEADING POWER FACTOR AND ONE AT THE Lagging power factor?

1 Answers  

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what is the difference between neutral and earth?

2 Answers  

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why cannot we use a freuency more than 400hz is used in aircrafts?

1 Answers  

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Why the resistance grounding (NGR) is better than Solid grounding?

5 Answers  

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what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????

0 Answers  

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how we can save the power ? suppose the electricity board gives 11 kw , but the machine require only 8 kw means how we can save the exese energy

2 Answers  

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My self munna.I had completed diploma from mechanical can I join facility and maintanance companys

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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

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what is active network?

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what is the use of earthing?

1 Answers   CPCL,

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HOW TO CALCULATE THE VT SIZING?

0 Answers   L&T,

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