Answer / sweety

Advantage :depending on the apllication we can use requries
voltage.So power saving can be done

Why the TNC switch is called as Memory switch

1 Answers   Reliance,

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whats is the role of power factor in designing a tariff structure?

1 Answers   IIT,

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any body know about lighting arrestor. how to determine the height of lighting rod from top of bulding and how many area it cover.

1 Answers  

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why dc is not given to transformer

4 Answers  

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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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if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.

2 Answers   Jakson,

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Why high voltage lines (overhead ) are called high tension lines?

8 Answers  

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if a motor has 1500rpm then what will its HP?

3 Answers   Willdale,

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Can we use droop CT in neutral in place of W phase of alternator ?

2 Answers  

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how to get bearing & winding temperature of an induction motor?

0 Answers  

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Why one side of secondary of transformer is earthed, to supply single conductor of electric traction system?

1 Answers  

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what is the function of supervison relay?Draw its wiring diagram.

2 Answers   IBM, R.R. ISPAT LIMITED,

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