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Crompton Greaves Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the diff. between two phase & three phase supply.

7 31128

1. Why a DC motor starter is called 3 point starter

21 66513

how instantanious short circuit current is calculated ? its formula.


What is the selection & Designing procedure for DG/Transformer

4 6978

what is the purpose of battery tap voltage.

3 17205

what will happen if we use cylindrical conductor instead of flat cu conductor in transformer

2 3791

Why DG set rating in KVA

13 43308

how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?


if a single phase 3 hp submersible pump of Crompton Greaves is moving in reverse direction and sometimes it moves in rigth direction ,then what may be the cause....

2 5472

1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 4542

why vacuume circuit breaker is not used for EHV

3 5501

what is the current setting for different relay protection for transformer .


Why selected cable colour red yellow and blue in 3 phase Electrical system?

9 14984

What is the settings of distance protection relay in 400 kv line


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Un-Answered Questions

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I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.