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Electrical Engineering Interview Questions
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difference b/w semiconductor and dielectric

2 11368

does any one know where we can purchase insulation oil for high voltage oil filled cables


I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:


3 3265

What is CBCT ? Why & Where it is used?


14 74510

can any one help me? 1.what is corona extinction voltage&corona inception volatage 2.what is mean by CFVV?


1 10791

Why diversity factor are applied to the load?

2 7931

which type of breaker sould be used for different level of voltage ? (i.e at 11 Kv, 33 Kv, 66 Kv....

8 13671

what happens if commutator is removed in an dc machine?

3 3884

why maintain the Dg PF is 0.8? Explain?

4 11848

What is mean demand of the Plant?

2 3026

How can we checked Killo Watts of Motor & Alternator?


What happen if we re-start H.T motor whose rotor is running at 40% rated speed. Is it will damage motor winding?

1 2194

If an induction motor is restarted before its rotor stop rotating, then what will be the amount of current drawn? Is this current will be the same as motor starting current?

5 4692

without any theoretical calculations, can u approximately tell the current rating of a motor(above 30hp)working at 415VAC.

7 5510

what is meant by negative sequencing in power system.explain in detail

1 1208

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Un-Answered Questions { Electrical Engineering }

How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?


Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used


Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2


what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?


What is error of a measurement?


why do we carry out winding resistance test?


Which type of motor is used in trains, what is the rating of supply used explain working principal?


what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero


Can we Co-ordinate relay in Load Break switch?


What is the function of capacitor in electrical circuits?


how we calculate the short circuit capacity of the busbar in LV & HT?


Write the force balance equation of ideal dashpot element.


what is the usage of microcontroller in the panel board?


Differentiate between voltage and current feedback in amplifiers?


What will be the current if the resistance total in a series circuit doubles?