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 bandpass of a transformer?

2 6871

When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?

Bhel, Sail, Sterling Telecom, TCS,

15 52126

please send me the L&T Emb. sys. placement papers and entire details of pattren

HMM, L&T,

2324

Why we connect the capacitor in Delta?if we conect in Star what will happen?

9 32848

What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

AC, Formo Plastic, HBL Power Systems, SECL,

5 64953

What is mean by diversity Fator?

7 21395

can we use 220 volt 15 w a.c. lamp on 220 volt d.c.

Philips,

11 22332

Explain Clearly Pahase and Neutral?

7 11894

Why the Motor takes High Current in Starting time?

5 12385

What is the difference between Surge protection device and Lighting arrester?

6 16824

Explain the working principle of Synchronous Generator and Assynchronous generator?

TATA,

11 54941

why the current leads voltage in the case of a capasitor

Infosys,

9 21348

Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?

9 16489

The rotor current is directly proportional to slip. How?

3 8528

How the starter control the starting current in three phase AC Motor?(In DC apply the reistance).

6 16077

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Un-Answered Questions { Electrical Engineering }

The power supplied to a 50mH inductor from a 120V, 60Hz source will be

4790

Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

1636

take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????

2244

List out the different frequency domain specifications?

1232

What is a compensator?

1081

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?

4034

What are the types of windings present in the ceiling fan? What winding will be effective first when we started the fan?What are the resistance and inductance ratios comparatively at the initial speed and full speed of the fan?

3005

Why human body feel electric shock?

1073

what happen if generator of micro hydro running at only a small percentage of its capacity, as a comparison, if the diesel generator that runs on only a fraction of its capacity there will be a wet stacking

1942

what is different between phase and netural

1976

how we find transformer capacity by ohm

2206

We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.

1857

why should the lowest unit of a testing transformer ( cascaded transformer ) have higher power rating??

2295

As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.

1686

what is the meaning of WYE and DELTA in Electric meter?

3824

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