Why the colour of insulator is always is chocolate in colour?

1 Answers   MRF,

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what is green house effect?

4 Answers  

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If 440 V supply has given at the secondary winding of transformer at that time if we apply 11 KV at primery then what will happen???????

4 Answers  

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Mention the disadvantages of low power factor?

0 Answers  

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in three phase 11kv transformer (11kv/433v) input( R,Y,B) output (X,Y,Z,N) the connection as follows 1 phase R -open 2phase y connected to both R and y of input] 3phase B- B what is the output voltage X to N ,Y to N , Z to N

2 Answers   Bescom,

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Whot is the difference between MCB and MCCB.Whot is the selection critearea for MCCB and MCB for 63 Amp.

5 Answers  

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in ONAN type transformer winding temperature is lower than oil temperature at evening time but morning winding temp is higher than oil temp what is the reason?

2 Answers   Areva,

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if we have a power factor 0.99 and we add a capacitive bank with it then what happen?

4 Answers   University,

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what is power factor

7 Answers   Eskom,

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In DC while we mention the voltage we are using -48V but in case of AC we mention only 230V not -230V, why we using -48V not 48V

2 Answers  

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what is real power and reactive power?

3 Answers  

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I want formula to calculate current loss with distance in km.I searched many sites but didn't right answer.Plz reply me

0 Answers   SECL,

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