how braking & making capacity of circuit breaker is calculated?

0 Answers  

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we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards

0 Answers  

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Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground.

1 Answers   ACC,

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Explain the power rating of a bulb, say 60W, what if the voltage changes

4 Answers  

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Am using an electronic digital display to see the RPM of ABB ACS 550 drive, which is showing negative value when the motor & drive in stop mode but it is showing correct value during the run mode. can anyone help me out??

2 Answers   Bala Power Solutions,

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

0 Answers   TCS,

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Between rotating armature type and rotating field type arrangements which one is adopted for large rated alternators and DC generators.Why there is difference in the choice?

1 Answers  

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could any one explain me what power factor and where it is use ful

3 Answers  

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what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?

0 Answers  

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how can we find a burden of potential transformer? what does it effects? how can we calculate rated load of it?

4 Answers   Areva, KPTCL,

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When lag/lead/lag-lead compensation is employed?

0 Answers  

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What should be the minimum and maximum ohmic value for earthing?

2 Answers  

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