how many earthing should need for UPS, where its connected

7 Answers   HCL,

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What is difference between start imitation and start interlock for 3 phase motor protection ?

0 Answers   Siemens,

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What is the difference between earth fault and restricted earth fault protection?

1 Answers  

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how to convert single phase supply to 3 phase or 3 phase to single..?

7 Answers   Wipro,

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what is the importance of neutral in elctrical system?

4 Answers   IOCL, Kharafi National,

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how to understand the controling circuits example star- delta-starter controling daigram please let me know

3 Answers   GMR,

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Waht will happened if reactive power increase in the line? waht about active power increase too?

3 Answers  

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What are interpoles and commutation windings?Why r they used?

1 Answers  

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what is the opencircuit tes &short circuit test in transformers ,why you need this test, in poen your connecting which votmeter why?

1 Answers  

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Explain about how is it working Earth fault'relay and wahts the resistance value of earth bed

0 Answers  

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For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?

0 Answers   GEPL,

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what does hapen if suddently frequency doubled

1 Answers  

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