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Electrical Engineering Interview Questions

Transmission line design. Say, I have a 1MVA generator and 2 transformers that will have the same load. What would be the proper rating of the trasformers? Is it safe to say, that I will simply divide the total rating of the generator?

2412

what composit error,ratio error,phase error in CT and PT??

31397

Why Aluminium wires are used for High tension(HT) lines? 11 KVA/32KVA & aboue

13151

srij i need the relationship b/w KW AND KWH and with an electrical example. plz send if u can?

3676

What is the percentage loss for aluminium wire for HT line more than 11KVa

1219

When charging a 20 MVA , 33kV/6.6kV transformer through regulated (0-6.6 kV or 0-33 kV) source on no load , what will be the maximum current drawn by transformer from source and what sould be the source capacity.

TATA,

8261

I am working on a 11KV system with fault current of 40KA for 1 second. I have selected 2500MVA 11/0.433KV transformer. How can i find the impedance value for this transformer? Please help me.

PPL,

4662

what is short circuit force ? How to calculate it for Panel?

Bilt,

4555

what is the difference between high impedance REF & REF, same high impedance differential protection & differential protection for Power transformer?

7814

to improve the existing power factor whether capacitors have to be added in series or parallel.and why

4506

how to calculate the capacitor rating for improving power factor

16801

why earthing is not required on transformer prymary winding side ???

19538

6536

why the amount of voltage generated at power generating stations is 11 KV only....?

2906

In a company has been installed an analog amperemeter, this company was suplied by generator X, there is no problem in the ampere meter, rigth now this company's supplied by generator Y then the pointer in amperemeter vibrating. What happened? Why? Thank's

2239

Un-Answered Questions { Electrical Engineering }

What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor

487

what is the use of sdf?

1174

what is the soft starter principle? how is connection diagram? what is the procedure for checking the connection?

1272

Who many reason of ignition fail ?

983

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

1110

Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.

988

How to know th details about an electrical Drawing ? Please mention the easy method.

1494

WHat is the general checks required for Dry type transformers

1150

What is the method of estamating of cable, CB,MCB ?

1120

1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?

1018

Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?

1263

Post possible questions for Power Factor Panel FAT / SAT

536

What is the phase relationship between the primary and secondary voltages of a transformer?

155

exolain the star delta connection

1635

What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

1076