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

what is the setting of locked rotor in HT motor ? (answer expecting in percentage)

0 Answers  

What are the Steps for Testing of 20MVA (make:-CGL) Transformer? How many Test we have to do?

2 Answers   BSL,

A 400KVA ,50HZ TRANSFORMER IS TO BE OPERATED AT 50HZ.THEN KVA RATING OF THE TRANSFORMER?.

4 Answers   GATE,

How is a 100 MVA transformer cooled?

9 Answers  

Why two main buses and one transfer bus scheme not using for 400kV switchyard

5 Answers  

why the undervoltage relay's interlock is used in earthswitch closing operation of the 400kV line scheme?

2 Answers  

FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?

0 Answers  

hello! can anyone explain to me how a 3 speeds table fan work? what are the factors that are controlling the speed of a normal table fan? Is it by varying the voltage or changing the magnetic field? would appreciate your reply :) thx in advance.

2 Answers  

What is the principle of HIGH SPEED DIRECT DRIVE MOTOR ?

0 Answers   Honeywell,

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  

Why High voltage are generate noise ?

0 Answers  

If we increase frequency in transmission line in lieu of voltage what will happen?

1 Answers