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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

How can two 3 phase transformers of same KVA and Voltage be connected in parallel?

Bernhard Schulte Shipmanagement,

1900

Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?

Bernhard Schulte Shipmanagement,

1678

Sir I hv to fix 20 ton ac how much electrical power need apply?

Sealand Restaurant,

1 2595

why frequency meter is connected in parallel in a circuit?

University of Engineering and Technology,

1 3794

What do you mean by screen of power cables?

1790

How do u analyse protection fault when vcb tripping on load

1655

what is the function of step up transformer?

DEWA,

2 4000

Why 1/3 is used in symmetrical components?

ABB,

1844

How do you find HT and LT sides of a distribution transformer only by looking at it from outside?

Nespak,

1 2635

Is CBCT protect human life? If yes than how?

Torrent Power,

1 2641

What you have to see in transformer after week, month?

1683

what you have to see after one week or month from the day of installation of transformer ?

1723

why not phase to phase fault occure in raining day in hv sub-station?

Getco,

1 3628

How many turns are there in primary winding? (In Transformer)

Philips,

1709

Why two phase welding machine is used instead of three phase welding machine.

Merck,

1929

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Un-Answered Questions { Electrical Engineering }

How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

3386

what is the working principle of a DG Set, Alternator, & exiter

10221

what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

1786

Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

2171

Testing procedure of DG alternator stability test

1569

What is q factor?

1131

What is stacking factor? What is its approximate value?

1445

Explain about 3 phase motor fault current calculation with examples?

2947

In synchronous motor, how the field current is related to armature current..i know its inversely proportional..but concept wise...i was nt clear....pls help me...

2051

Define conversion efficiency of a power amplifier. What is its value for class c power amplifier?

1366

It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

3886

what is a reactive power? what is the relation with power factor?

2188

how we calculate the withstansing current capacity of wires&cables?

2016

Draw transformer phasor diagram.(full load,no load)

4182

What is formula calculation size cable wire ?

1954

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