Answer / kc ng

Normally for transformer oil temperature >80deg = alarm.
if oil temperature >90deg = tripping of VCB.

How Grading Rings & spacers in transmission lines works?working principle?

1 Answers  

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WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

0 Answers  

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why the starting current of a motor is high?

3 Answers   ITC Infotech,

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Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

0 Answers   HCL, Reliance,

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why conductors of low tensile strength 1)produce greater sag and 2)can not be used for larger spans

1 Answers  

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how can we change the supply voltage?

4 Answers   Areva,

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Two electronic energy meters are connected to seperate phase wires, but connected to a looped neutral. Are these going to function correctly?

8 Answers   DRDO,

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Terminal blocks is used for segregate the connections... There is any principle for terminal block..?

0 Answers  

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What is an isolation transformer?Why do we need isolate circuits?Where do we use them?

2 Answers  

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Pl.brief me about Electrical power distribution system from Main generating station to Industry.What is the use of in between station.

0 Answers   ARDE,

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A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

1 Answers  

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why high speed tripping relay is used in protection circuit why not normal relay

0 Answers  

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