Answer / sagar upadhyay

Underground cables containing several layers of protection
over them

Answer / gagandeep sethi

in a cable diffrent layers bt which cable has a layer of
iron or other metal strips that cable says armourd cable nd
a in a armd cable some tym armd used as a earth wire

why transformers not work at d.c.-

3 Answers  

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why in india the voltage generate multiply by 11,,,like 220v,440v,11kv,33kv,66kv,220kv,

3 Answers   NTPC, Servotech, Tata Power,

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what is the size(sq.mm) of these conductors dog,rabbit,tiger,panther,mush,

8 Answers   Power Grid,

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Dear Friends, Need your help for connecting APFC panel, Quotation : I have 2 No’s 1000 KVA Transformers, both transformers are having separate APFC panels, ( Tr-1,400KVAR, TR-2,450 KVAR) Now I want to stop One transformer, present load is 650Amps, Max, So One transformer is enough, I have switched OFF TR-1, but PF is not maintaining properly, its 0.5, So now I want to connect TR-2 APFC also in TR-1 Loads, Can any one answer for my Quotation with drawing, how to connect TR-2 APFC panel in TR-1 Loads,

4 Answers   L&T,

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what is difference between VAT & CST

1 Answers   MIT,

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how to check IR values in alternator winding?

3 Answers   Birla, Naftogaz,

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What is the difference between KW & KVA ?

10 Answers  

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What is the formula to calculate the rating of a three phase air circuit breaker

0 Answers  

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . please reply..............

9 Answers   NTPC,

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What is current and voltage?

5 Answers  

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what is mean by D.O. in distribution line poles?

0 Answers  

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What are the advantage of free wheeling diode in a full wave rectifier?

0 Answers  

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