what is the difference between self excited & seperately excited ?

3 Answers  

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if There is Short circuit in Power Transformer, what will happened to Buchholz Relay.?? How Buchholz Relay will respond.??

2 Answers  

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What is the use of Gateway RTU like ABB RTU 560 in power plant, SAS system ?

1 Answers   ABB,

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why ferranti efect occurs on no load only?

3 Answers  

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i want to measure voltage difference between neutral and earth so i just simply use voltmeter. my question is that may i use this measure continuosly.or there are some electricity board restrication on that? or it creat some problem on my measuring device..?

2 Answers   NEEC,

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Before i went to bed my master bathroom lights were working fine. At 2 am, when I went to use the lights, none of them were working. The outlets throughout the bathroom work, but the lights and fan above the toilet don't. I have two panels of switches. The one panel has four switches. One of the switches turns on the hall light, and that works. The other three are to other lights, and they don't. The other panel has three switches. One of those is to the fan, and the other is to a light above the toilet. The other is a to light that is also on that other panel. I tried the breakers, and the one that turns off the outlets, marked for the bathrooom, turns on and off the outlets. None seemed to be tripped. I checked the lightbulbs, and they are fine. Please help

2 Answers  

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what is per unit calculation?looking for simple and strong explanation thk u

0 Answers  

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What do you mean by reach and reach the point of the relay?

0 Answers  

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WHAT ARE THE CHARACTERISTICS OF AN VOLTAG AMPLIFIER

0 Answers  

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which trsanmission is easy and cost effective AC or DC.

19 Answers  

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OHMS LAW

9 Answers  

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for measuring current and etc.,why we use value of 1.732 in three phase calculation. not in single phase.why

3 Answers   Bhel,

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