Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the value of 3 phase voltage?

RECPDCL,

7 3294

why do we need a 4th wire in 3phase 3wire transmission line

6 3650

What are the limiting factor for controlling maximum hot point temperature within a hydrogen and water cooled generator?

1 1368

resistance of transformer oil=?

HCL,

1 1533

What shall be minimum thickness of firewall in between two transformers and which code specifies it ?

1 11239

Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

1 1141

Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

Sun Pharma,

2 3696

what is the internal working of star delta starter

620

in a plug point why the hole size at the top is large?

TCS, Bhel,

9 6176

what is 'A' Check & 'B' Check ?

2 1496

What is single break or Double break related to MCB?

2 2200

How to convert KW to KVA or KVAR OR kvar/kva to kw?

8 42271

open circuit test when performed on double the voltage & double the freq, then what will happen with p.f and current magnitude?

Aarti Drugs,

419

what is an S.C.R. and how do they work?

GE,

4 2705

How line capacitance & line inductance varies with increase in height tower.

775


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Un-Answered Questions { Electrical Engineering }

What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

332


Why neutral point is consider as zero potential?

805


why industry prefer ht motor instead of lt motor.

525


How much dc volt applied in cathodic protection system?

679


can someone explain that how the speed of the protection system affects the fault level calculation?

426


can any one suggest me the tilt angle of my solar pannel ?? or tell me how can i know the fix tilt angle of my solar pannel?? my cordinates are 31.503629,72.993164.

380


what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

384


The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.

457


What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.

141


What is creepage distance..... what will be the value for different voltage level

507


what is cause of static electricity? I experience shock when i touch metal equipment in a room ,furher check shows earth leakage showing 80ma at the DB near to the 400 MCCB?

385


What is the difference between Droop vs Isoch Control?

630


defination of controlled shunt reactor

663


what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.

1585


static chagre

475