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Electrical Engineering Interview Questions

How do we find the rating of a transformer, if it got burnt badly.

610

what is the reason of capacitor failure in alternator which is working with 10 kva dgset

539

reason of capacitor failure or low voltage in alternator wtih 10kva dgset

710

reason of diode failure in alternator

905

aternator every parts and its working

596

what is the difference between directional & non directional earth fault with example please explain.

826

How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

958

The undesirable property of an electrical insulating material is

3996

How to size fuse? How to size MCB?

523

1,Building containing 25 flats how much Amp 3 pole MCCB are required? 2, For the safey of each flat how many Amp RCCB can install -loaded with A/C

L&T,

1362

I Want randstand placement papers

792

What is difference between YNyn0 and YNyn ??

1180

what is dry and wet frequency withstand voltage? why & where it is used??

1195

If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

476

What happen when change order of CT in GIS feeder?

598

Un-Answered Questions { Electrical Engineering }

Why neutral cable carry current.

1034

What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?

1439

what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks

1195

How to calculate the Efficiency of Chiller

2385

Anybody tell me about modbus hex address of l&t trivector meter er300p??I want to read voltage,current,kwh etc via rs485...If anybody have a manual then send on my mail..Brijeshmodi18@gmail.Com

628

physical identification of HT & LT panel

755

what is method for testing CT

1131

What are the commonly used schemes for the bus zone protection?

148

how to calculate the earth mat design in 132 kv substation yard ????

5177

why we have and use 3 phase not 2 or 4 or other in power system?

1220

Could you measure voltage in series?

183

How can I calculate ISF of current transformer?

2165

Direction of flow of active power and reactive power with logic?

861

What is servo lock in CNC how they work and if any parameter for them in CNC machine

4006

what is JE exam?

1185