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Electrical Engineering Interview Questions

what is the voltage and ampere rating of all range of HT conductor?

3273

What is Delta Connection? What is meant by Forward Delta & Reverse Delta & How Will be the Connection in Power Transformers?

1409

Why armour HT XLPE power cable required to Earth?

3829

why we can't use more then 50 hz in india ? Is it possible ?

DVC,

7013

generator(Deutz 550kv)is runing for 2 hours with load of 900 amp and then it goes in shutdown with alarm fault messege of speed fault although heirtz reading fixed at 50,what does that mean

2587

WHAT IS THE DIFFERENCE B/W THREE POINT STARTER AND FOUR POINT STARTER

4412

5219

what is meant by impedance & transient protection?

1280

What are types of losses in the Transmisson Lines ?

GE,

4107

how to claculate earth strip size for 1500kVA transformer for neutral and body

29613

why florescent light was flickering?

4367

what is formula in determining the size of Circuit Breaker for transformer with the following specifications. 7 units of 1600 volts (primary) and 400 volts (secondary). Both Primary and Secondary will have a circuit breaker which is SF6. What should be the Switchgear Main Breaker Size anf the sizes of each brances Circuit Breaker for Primary.

ABB,

3498

how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?

1150

why do the alternator doesnt have open circuited windings in armature???

2380

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?

1102

Un-Answered Questions { Electrical Engineering }

why power factor is important?

6662

In both 600/1000 V cable and 450/750 V cable, we can supply 415 V. However for distribution, all utilities are using only 600/100 V instead of 450/750 V. What is the reason?

911

Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me

1170

lenz law application and define

1789

what is the criteria for selection of conductor used for ehv ac electrical dischrge

1240

What is the range of the stator resistance of 3 phase induction motor?

1081

sir i ve applied for hindustan petroleum and power grid india ltd..and the exams on feb 22.can you pls send model papers and tell how to prepare for those.i need to get into any of these for sure.....

1326

What are the types of excitation system?

1077

What is the role of feedback in a closed loop control system?

293

what is the transformer rush current?

1145

how to calculate percentage impedence at 75 deg C at normal tap

1338

how electrical earthing maintenance done in industry?

599

What is difference between insulating medium and fault current interruption medium in a switching device.

680

compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor

810

How to use earthing on shipments.

507