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Electrical Engineering Interview Questions

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

1540

How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

1251

WHAT IS M.P.C.B

3634

what is the acb tripping & closing voltage.

2639

what is difference b/w bus duct & bus bar.

3644

what is the difference between ups & inverter

4253

what diff. between earth nd neutral?

NTPC,

5725

Which generation plant has instant start

2637

what is the eight bit unit?

1504

If you have an earth with pilecap then your resistance is really low. why and how?

1048

if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??

914

while selecting transformers for 33 kva feeder normally we ask for 33/433 kv why not 33/415

2308

what is the formula of high voltage testing of three phase induction motor?

2665

what is the rating of Insulation tester for measure 15 KW, 3 phase 415V 50 HZ induction motor?

ABB,

4274

What is diffrence bitween electrical and electronics ?

2988

Un-Answered Questions { Electrical Engineering }

can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?

2261

What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

1180

how is the incoming cable size calculated for a given current rating of a panel??

992

how to calculte capacitor range for single phase induction motors??pls tel

1109

what is meant by directional earth fault and non directional earth fault? describe both.

1057

what is excitation/

1232

Describe Non I.S. Earth System and why is it used?

818

What happens if we run alternator on under frequency?

1193

What is the permissible maximum flux density in transformer core?

204

what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

1971

what is class of SPD and dittels of all class ?

1136

what is the working process of over & under voltage relay.

1122

why occ characteristics of generator is also called as magnatization characteristics ?

1003

hwat type of motor is used in thermal gas turbine hydro nuclear power plants and why

1040

what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.

1309