What happen if we give resistance to the armatuure of a dc motor?a

1 Answers  

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

0 Answers  

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I need bhel electrical test pattern & paper

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we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

0 Answers   TNEB Tamil Nadu Electricity Board,

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if a 3 point starter is not available, how can a dc motor be started?

3 Answers   Accenture, BIT, Techno Solutions,

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What is HT? And specify the range of voltage?

5 Answers   HSL,

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How calculate cable size & voltage drop for the following requirement connected load 150 KW distance cable length 1000 M voltage 3 phase 415 v.

1 Answers  

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what is the function of fire alarm system?

5 Answers  

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If Two Generators are working parellel in a network and suddenly the field of one Generator get weakened What will happened if there is no reverse power relay fixed in that Generator panel????

7 Answers  

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how much watts the computer will takes

2 Answers  

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What tests should i carry over on a newly rewinded DC Generator with voltage rating of 38 volts and current rating of 350 amps, to certify that the machine is OK?

0 Answers  

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What is the material used for the core of a high freiquency transformer?

3 Answers   Videocon,

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