Answer / k.prakashchandra

Its first function is strike arc across the tube by inducing
high voltage with the help of starter and the second is to
limit the current as the resistance across the tube becomes
zero after the arc is struck.

Answer / thowsif_emerson

Unlike incandescent lamps, fluorescent lamps always require
a ballast to regulate the flow of power through the lamp.

Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

0 Answers  

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v=I*R, i.e V is directly proportional to I. now P=V*I. so V=P/I. thus v is inversely proportional to I. so what is the correct one? If both are correct than for which kind of condition this 2 differ

3 Answers  

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what is interpose? where it is used and why it is used?

0 Answers  

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Residual voltage & residual current used in which protection?

5 Answers   Qatar Gas, Reliance, Transformers and Electricals,

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What current flows in the transformer primary when its secondary is open?

0 Answers  

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In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.

0 Answers   HAL,

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Diffrectiate between earthing and neutral

6 Answers   TATA,

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how to calculate the current if i know power in MW and voltage 11kv/415v and also want to know that incoming cables for trnsformer

6 Answers   Daikin, KOC, Reliance,

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how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula

7 Answers   Apollo,

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Can we perform parallel operation of two transformers when one transformer on load?

3 Answers  

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Why neutral wire is heating in symmetric single phase distribution of three phase power supply?

2 Answers  

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what is working parincipal of a ht transformer

0 Answers   Pidilite,

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