Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the value of 3 phase voltage?

RECPDCL,

8 8106

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

6 7494

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

1 3049

resistance of transformer oil=?

HCL,

1 3637

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

1 18429

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 2695

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 6420

what is the internal working of star delta starter

1643

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

Bhel, TCS,

9 10875

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

2 3442

What is single break or Double break related to MCB?

2 4559

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

8 77813

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

Aarti Drugs,

1 2143

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

GE,

4 5742

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

1863


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Un-Answered Questions { Electrical Engineering }

WHAT IS counter flux IN CT?

1524


Why arc quenching is used in Diode ?

1569


Hi, My plant daily consumption is calculated as 3.8MWH but my supplier has sanctioned an power of 2.6MW per day. how can i equal or distinguish this two factors

1444


Why can't we take NO LOAD TRIAL of motors having V1 mounting??

1509


What are linear and non-linear systems?

644






This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

2001


Why squirrel cage motor can only use with low starting loads ?

1557


how much leakage current is allowed in MC61A L&T make relay?

3128


before synchronizing an alternator,power factor is leading ,why?

1015


Electrical Engineering

1501


how balanced in star delta connection ?

1623


What is a slack bus?

641


How we calculate DC inducation moter Amp? Sir pls give me formula......

1425


What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

737


How efficiency of thermal plant can be improved?

752