Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why transmission line 11Kv OR 33KV,66Kv not in 10kv 20kv?

NEPC, Mepco, A2Z Group, Baiji Power Plant Gas, Electrical, Kirloskar, OAMC, UNI, University of Lahore, HCL,

43 90851

What is different between DOL(Direct on line starter), VSD, S/S(Soft starter), and A/T(Auto Transformer)

2 45742

what is diffrence between neutral and earth wire

MTNL, Bhel, Esab,

23 22369




what is the method to measure the transformer current carrieng capacity in three phase.

1 6248

Why USe In -48 DC Volt !

3 3268

what is MAR

NCC,

1 2917

what is the difference withbeen lighting capacitor and motor capacitor?

2 4676

Hi Friends pls give information regarding BARC written test. am attending by 20-5-2008. mail me to kkumarei@gmail.com or message to 9962122264

BARC,

2 4585




why humming sound occured in HT transmission lines.

GE,

9 23658

WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES ?

GE,

26 13398

hi if anybody got model questions for cpcl Grade'A' electrical engineer position.send it to my mail please krishkumar22@gmail.com

586

some practicle study shows that the reactive power at the receiving end is not equal to the reactive power at the sending end.But according to theory the reactive power is exchanged by different parts of the network – capacitors and reactors permanently, but is never consumed or produced. Then Where that reacrtive power loss occuring?is there any formula to calculate reactive power loss?

3 2795

what is self commutation how a thyristor discharges through a capacitor and inductor

3 13001

why HT voltage rating in multiple of 11

ISRO,

12 21784

what is phase to phase voltage? what is line to line voltage

HBL Power Systems, Exmar,

46 103732


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Un-Answered Questions { Electrical Engineering }

CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

4149


Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?

760


Explain the laying procedure and laying depth of submarine/subsea power cable for 220/400KV system? Also available cable diameter?

879


which stabilizer is better ? AVR, Servo Stabilizer, Static stabilizer etc & why explain it

1566


how to calculate singlephase motor efficiency?

916






electrical

977


what is v/f control in VFD?

240


What kind of maintenance is conducted for Transformer

901


What is Faraday's law

218


Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings

810


How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

663


Draw transformer phasor diagram.(full load,no load)

2893


The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason

1178


how to calculate the size of the HT cable

513


How the circuit breaker is selected for Induction motor of 100 kW, 415 volt, 0.85 power factor, 0.95 efficiency ?

457