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 meaning of 'A synchronous motor floating on line'?

2 22557

how to calculate the no. of turns in secondary side of CT?

1 6716

Between Turbo alternator and Hydro alternator which one is more difficult to cool and why?

2 15400

Between AC generator(alternator) and DC generator which can be designed for high voltage and why?

1 4833

How damper winding in synchronous motor suppress Hunting?

Bhel,

2 26027

Which is stiffer between salient pole rotor and cylindrical rotor synchronous machines? Justify your answer.

1 14594

Which theory is used in the analysis of salient pole rotor synchronous machines? Who is credited for this developement? Could the same theory be used for cylindrical rotor synchronous machines?

1 6675

Why alternators are rated in KVA?

12 39462

Between rotating armature type and rotating field type arrangements which one is adopted for large rated alternators and DC generators.Why there is difference in the choice?

1 11704

What is the need for checking knee point voltage for CT's?

1 4570

ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

2102

what are the main problems that happen in an emergency light and how to fix them ?

2 5852

Without seeing the nameplate descriptions of a rotating machine,Is it possible to say which one is a motor and which one is a generator? How would you certain this?

3 6620

How the speed of synchronous motor changes with the variation of load?

1 5953

Why synchronous motor runs at a fixed speed? what is the name of that fixed speed?

4 16716

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Un-Answered Questions { Electrical Engineering }

what types of electrical & mechanical test conducted in switchyard?

2232

A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

2591

WHY TERTIARY OF POWER TRANSFORMERS IS LOADED WITH EQUIPMENTS LIKE CT,PT,ISOLATOR AND CB

1907

how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?

1762

1.Z transform always lies around ? a) origin b) pole c) zero d) z=1. Multiples Mcqs which is bother me can’t find answers on internet. Some help required with little explanation . Note: this is not homework or related to any test. Thanks

2464

why would amp draw on neutral wire be as much as amp draw on the hot leg.

2093

What are the criteria shall be considers for sizing Fuse and MCB? If the rated current is 10Amps what should be the fuse size / MCB Size?

1637

what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

2335

I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain

2265

what is the clear formula to calculate cable size for a load

1964

. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?

2156

Hoe do calculate the Cable size for Amps rating ?

2161

How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

4343

sir am giving jspl exam on 19th oct . i belong to eee, so plz send previous question papers ..........to dis id abhilash203@gmail.com

2568

what material is the electrical housing wire made of? is there any difference for the telephone lines?

1968

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