Answer / guna

if u want to use Aluminium cable divide the current value by 1.4
for copper cable divide the current value by 2.4

Answer / ehsisjwuwu

reallly dont know :-)

Answer / shyam sharma

both of above are not a rgt ans.
plz give a precisious ans.

Answer / ramkumar

sq.mm=Irun^2/1.6 For copper
sq.mm=Iruna^2/1.2 For al

Irun is Running current.

why the the electrical machine coil are damage ? How to prevent it?

2 Answers  

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in Telecom DC system-why positive +ve is made earthed.and - ve is fed to load.

0 Answers  

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why normally Generator rating are between 11Kv to 22Kv?

7 Answers   Torrent Power,

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As we know multiplicity factor derivation equation is as below MF = main c t ratio / main p t ratio * meter c t ratio / meter p t ratio * meter dial constant Where in digital meters for HT kwh import export now a days meter constant are calibrated already which is 1 So my question is For HT 11kv 110 v line values are as below Main c t and p t ratio are 11000 v and 110 v and 20/5 means 20 amp and 5 amp Now meter values are 11000/√3/110√3 and primary and secondary amp are displayed as -/5 amp on kwh meter so what will be the MF for this meter ?

1 Answers   NEPC,

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how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????

0 Answers   Vatika,

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There is no such thing as a Generator. All power generating devices are Alternator since both generate alternating current since this is the only way electrical power can be generated. In "generators" the alternating current is converted into DC inside the housing of the "generator" in order to give out DC Do you agree? If not please educate me. How else is DC generated if not like above?

2 Answers  

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What is miller crystal oscillator? Explain its operation?

0 Answers  

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What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.

0 Answers  

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what is the meaning and difference between ELECTRICAL DRAWOUT and MANUAL DRAWOUT?

3 Answers  

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what is the voltage between nutral and earth?

2 Answers  

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Define cut-off rate?

0 Answers  

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why we use iron corn in transformer instead of wooden core

12 Answers  

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