Electrical Engineering Interview Questions

why we are using starter

5225

ELECTRICAL DRIVES: can a motor load system with passive load torque can have equilibrium speed in second quadrant

5390

Why we use stones in switchyard?

8621

what is the diffrence between current transformer and voltage trasformer

5891

why generaotr rating is in kva and dc motor in kw?

Bhel, NTPC,

13468

When generator connected, the circuit ELCB exploded. What is the reson?

4466

what is the difference between current voltage transformer and current transformer and where it is used?

3990

what is the formula to calculate voltage drop/loss on 66KV Transmission Line?

3127

What is a circuit breaker contact multiplier relay?

10046

what is the cause of voltage dipp or swell in the transmission lines?

1540

Whether it is possible to measure energy at the input of rectifier transformer (12 pulse with very high odd harmonics)

1408

why plc need seprate earthing?

11231

What is the purpose of earthing Truck ? How does it work for busbar and cables?

15100

If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1403

what is the difference between thyristor & IGBT?

10738

Un-Answered Questions { Electrical Engineering }

What is the control action?

575

dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.

913

What is the difference between electronic regulator and ordinary rheostat regulator for fans?

512

what is a bus post insulator? explain its application in a substation.

11590

to vary valtage from 0 - max a variac is necessary . so how to design for high power applications nearly about 200KW power

1507

WHERE NEUTRAL WIRE IS CONNECTED AT DOMESTIC TO TRANSMISSION LINE(SINGLE PHASE TO THREE PHASE)

1285

What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?

1437

Which level of the Transformer oil got dielectric strengh? And why?

1662

what are the reasons of CT circuit faulty in busbar protection scheme?

886

my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?

1393

whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

954

please send me RRB electrical engineer previous year questions for Sr. Section Engineer

1399

What is Negative Potential Bias

1716

How many types of instrument cables are there?

559

what is W.T?specify the acceptable range?

1432