What is the difference between MCCB,ELCB,RCB & MCB

2 Answers   Bhel, HCL, HPL,

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what exactly commisioning work does in electrical site work... LT side?..

0 Answers  

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Transformer's core is made up of which material and why so?

10 Answers   ABB, NTPC,

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if i have to use 14 kw what size of power cable can i use and size of earth cable also.

2 Answers  

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Do you know how to joint the H.T and L.T Cables?

23 Answers   KESC, MGVCL, Nokia, Oil Country Tubular, Power Control, SAGT, Siemens, Simco, Vivek Engineers,

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I need a 33/690V Dry type transformer.How to select IP class for this transformer.This will be an outdoor transformer located in a highly polluted environment.

3 Answers  

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sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me

0 Answers   HPCL,

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in 5 mva transformer 33/11 kv s/s what rating of capacitor bank is required & what is the fourmula for rating

6 Answers  

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What is meant by transformer, why it should be used, with out that equipment what happens if we transformed the supply?

12 Answers   Bhel,

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what's ripple content in rectifier? how it formed?

1 Answers  

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What is center gravity load in substation?

0 Answers  

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Why the wave trap is put in Y phse only in switchyard?why not in other phases?

1 Answers   IAG Automation, REL,

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