Interview Questions Answers in Electrical Engineering

sanjeevibp

{ City } chennai
< Country > india
* Profession * protection engineer
User No # 17013

Total Questions Posted # 5
Total Answers Posted # 2

Total Answers Posted for My Questions # 39
Total Views for My Questions # 158109

Users Marked my Answers as Correct # 3
Users Marked my Answers as Wrong # 6

Questions / { sanjeevibp }

Questions Answers Category Views Company eMail

where we use zero sequence current transformer or core balancing ct.

2 Electrical Engineering 14315

For testing 33kv cable hipot testing. How much kv we have to Apply .Give in details.

24 Electrical Engineering 103399

why we permissive overreach in distance protection.where it is applicable to use in long r short lines

Electrical Engineering 2757

what is the difference between underreach and overreach.what is the advantage of using overreach instead of underreach.explain

1 Electrical Engineering 14809

WHAT AC (HI VOLTAGE TEST) VOLTAGE SHOULD APPLY FOR 33KV CABLES.EXPLAIN IN DETAIL

NTPC, Voltech,

12 Electrical Engineering 22829

Answers / { sanjeevibp }

Question { Bhushan Power Steel, 30048 }

What is C.T, why it is used and what care should be taken
for that while connecting?

Answer

C.T STANDS FOR CURRENT TRANSFORMER USED FOR MEASURING
PURPOSE FROM LOW VALUE TO HIGH VALUE.
WHILE CONNECTING THE C.T SECONDARY WINDING OF THE C.T
SHOULD NOT KEPT OPEN COZ IF SEC OPENS IT WILL DEVELOP HIGH
VOLTAGE.SO HIGH CARE TO BE TAKEN.

Is This Answer Correct ?

1 Yes

3 No

Question { 46884 }

what is skin effect? why is it absentin dc system

Answer

The derivation of R and X assume uniform current density
thr the cross section of the conductor.as the hertz
increase from zero,current densityincreases near the
conductor surface and decrease as the center of the
conductor approached.this effect is know as skin effect.in
dc uniform current density occur only when the frequency
is zero.

Is This Answer Correct ?

2 Yes

3 No