How many types of relay are present in a VCB and ACB, what are the tests we can conduct on both breakers and how to set the relays values

2 Answers   Hyundai, Sodexo,

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my UPS suddenly goes off and all panel light also blow off.This happens even main electric supply is not interrupted.After some time it automatically starts functioning normally.Batteries are new.

0 Answers  

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How DC to AC convert

2 Answers   Access,

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Why all transmission lines are AC, not DC line?

4 Answers  

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which gas is cost wise high?

1 Answers  

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In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

1 Answers  

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wd do u understand by stablity of ps?

2 Answers   IOCL,

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why semiconductor fuse used in drive ,not ordinary?

4 Answers   EAP, Essar,

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Where the excitation is given either stator or rotor in actually in power plants?

8 Answers  

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Readings of ER300P Trivector meter

0 Answers  

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What is the use of 1:1 isolation t/f in any circuit...?

3 Answers  

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how can we check a fully charged battery?

6 Answers   BEML, Singareni Collieries,

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