Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What is the effect on 3phase induction motor if current setting knob of DOL kept at minimum current?

3736

Why the high starting current does not harm the low capacity induction motor?

1 4970

Transformer how to maintaince a check b check c check d check

DIC India,

2082

Igfet is a

1639

How Self works in DG set

2022

how is control wiring coding is done in a CRP panel ?

Genus, Havells, Hindustan Power Projects,

2024

What is ideal IR values for ground and neutral.

Hindustan Power Projects,

1757

Hi, My question is our total motor load is 55 kw.so what cable size required for main supply. Please reply

Maryam Enterprises,

1 2626

i have ht transformer of 142 kva with air cooled facility,having secondary voltage 7850volt, and secondary connected full way bridge rectifier .i faced the problem repeatedly that transformer one coil and rectifier diode of two phase was burnt two times. i checked all the secondary ckt. no any short ckt found,then what will be the cause side

Modern Terry Towels,

2 2897

What type of changeover switch needed to run a load of five 1.5 tonn ACs.

1 2660

wish of these transformer uses oil?

FJ International,

1627

how to check the continuity of a cable with a megger

Metro,

4 5622

My meter ratio is -/5 and ct ratio is 100/5 now what will be the multiplying factor and how ?

1 2415

what is surge impedance loading?

1 2559

in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

apspdcl,

1926

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Un-Answered Questions { Electrical Engineering }

what is the step by step formula for calculating bus bar phase and neutral size of a panel board.suppose the incomer of panel board is 100A..???step by step answer please

3763

i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.

1930

what's the difference between abs/inc encoders. apart from the position remembrance what are all the other differences. and what's mean by grey code.

2088

Swg formulae

2022

What is the purpose of stand by earth fault protection for transformer ?

2084

List out the the types of Mounting Light fixture?

1609

can we synchronize star system generators with delta system transmission line ? and how ?

2844

what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?

2087

Power Factor Correction Panel (Manual & Automatic)

2227

how we calculate the dick for a pole?

2185

Define what is power quality meter ?

1267

What does ampere turns shows?

1129

What is reverse power relay?

1182

what is mean by D.O. in distribution line poles?

1665

Define the three phase formula fuse.

1866

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