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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the value of 3 phase voltage?

RECPDCL,

8 5840

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

6 5851

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

1 2512

resistance of transformer oil=?

HCL,

1 2765

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

1 16105

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 2164

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 5582

what is the internal working of star delta starter

1244

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

Bhel, TCS,

9 8751

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

2 2678

What is single break or Double break related to MCB?

2 3692

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

8 75021

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 1392

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

GE,

4 4592

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

1460


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Un-Answered Questions { Electrical Engineering }

What does the term power factor shows?

240


How to do maintenance of transformer feeder.

909


Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

1113


what is High resistance grounding and whatis the criteria for the selection of High resistance grounding

1241


can any one know is sbi interview based on merit or based on roll number

1062






What will be in Mahagenco Trade Test Exam? I want to know the same.

2777


When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

318


Define filter?

247


why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?

2019


How dia computation perfomed in cold rolling mills .

2207


why the NGR (neutral grounding resistor) always OFF during DG off?

2665


how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???

1147


what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?

2472


what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

1392


Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.

1165