Answer / ravi kumar

Safety of vcb :[ Vacuum circuit breaker]
1: Earth fault relay
2: Master trip relay
3: Supervision relay
4: Short circuit
5: Shunt relay
6: Closing coil

Answer / arvind kumar

VCB SEFTY
Earth fault
Short circuit
Over current

Answer / kumar manish

VCB saftey-
1.Earth leakage
2.Current unwanted due to Short Circuit.
3.Over load

Answer / vijay raj

Oil type transfomar sefty ans dry type

Answer / bhanu pratap singh

all right

The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

0 Answers   Ispat,

A resistance of 50 kΩ has a conductance of:(a) 20S(b) 0.02S(c) 0.02 mS(d) 20 kS

1 Answers  

What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

0 Answers  

what is the meaning of transformer short circuit test?

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defination of static variable compensator

1 Answers  

Why 4 pole generator generates more power and 6 pole generates less power campare to 4 pole

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Can we connect CBCT in the Busduct

1 Answers  

Main advantage of auto transformer over two windings transformer is that A it needs no cooling B it uses only one winding C core losses are reduced D it has simple construction

0 Answers  

why do MCB melt but not tripped in lighting highmast??

1 Answers   AHPCL,

what will happen if dc machine are supplied by ac source??

2 Answers  

Keywords: Die, Card, Coin, B/N 2 To 12

0 Answers   TCS,

When oil level in the oltc of power transformer reduces , oil surge relay will act or not

4 Answers