Interview Questions Answers in Electrical Engineering

fazal ur rehman

{ City } kabul
< Country > 0
* Profession * manager technical
User No # 60624

Total Questions Posted # 2
Total Answers Posted # 1

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Questions / { fazal ur rehman }

Questions Answers Category Views Company eMail

In power generator sets, when they are coverted from 50hz to 60hz, the kva rating after conversion increases. For example, the manufacturer of a perkins 200kva @ 50Hz generator set has mentioned it to become 220kva after converstion to 60hz. What is the relation between the frequency & the KVA rating. Any formula please.

3 Electrical Engineering 7250

Can we use same copper cable for both AC & DC power.

3 Electrical Engineering 5650

Answers / { fazal ur rehman }

Question { Essar, 24859 }

What is Earthing?

Answer

Yes, Hm is absolutely right

Purpose of earthing is to provide a low potential path to
fault current which result in tripping the protective
device & thus cut off the supply. Once the supply is cut
off, both equipment & operator is safe. But remember
earthing witout the use of protective device in the circuit
is of no use.

Is This Answer Correct ?

15 Yes

3 No