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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Tell me about ur past electrical maintanence job

Apollo Power, Solar,

1018

What is converter transformer? Diff b/w converter transformer and distribution transformer? why we use converter transformer in place of giving supply to drives?

 1 3155

What is the tolerence limit between neutral and earth in 230 V AC System?

NTPC,

7 7206

Why the vector group of excitation transformer in static excitation system is Dy5?

CSEB, SRF,

2 7392

In a 3 pin plug holder, what is the purpose of diameter of ground pin is larger than phase and nutral pin

Coal India, HCL,

9 9204

How to calculate the breaking capacity(like 15ka,20ka) of Circuit breaker (MCB,MCCB,ACB)

Career Excellent Sdn Bhd, Neona, Northern Max Engineering, Sps Renewables, Terasaki, UEM,

9 68717

what s a servo motor? how to control the servo motor? and its application, purpose of using?

Arabian Pipes,

2 4181

Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.

 1258

i've iocl interview.. if you know the interview process please give me information..

 1018

what is alternater?

 8 4791

What is core balancing in Power Transformer. What is the affect of an unbalabce core.

 1 3088

Equal resistance of 100ohm each are connected to the arms of whestons bridge, which is supplied by 2v battery. The galvanometer can sense a current low as 1microAmp. What is the smallest resistance that can be measered.

GATE,

1 2752

I need HT sphere gap calibration table. Can any body help me.

1066

what is the function of rccb how it diffrentiate between elcb

 1 2888

What is an Antipumping relay ?

 4 5290

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Un-Answered Questions { Electrical Engineering }

how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

965

What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

764

I AM GOING TO ATTEND APTRANSCO ON 26TH OCT 08.PLEASE SEND ME ANY MATERIAL OR TYPE OF QUESTIONS OR EXP QUESTIONS.

1065

Name the test signals used in control system

234

What is the previous name of Cox's Bazar

1143




How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.

1092

High voltage test procedure of in swgr board. why should measure millivolt drop on testing time?

1131

Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

762

the winding of Generator and Motor is star or in delta ? and why

175

What is resistance of 50meters, 16sq.mm, single core copper cable?

905

what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

1072

What are the advantages of thermal power plant?

155

can any tell me why slope 40% and 80% is calculated in differential protection?

988

Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?

587

Y phase plates are used in transmission line??? what is there need???

1936

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