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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How do you reset circuit breaker?

Bhel, Kaveri Steels,

1 1544

hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites

1159

what is the principal of starting of a three phase induction motor.

Moser Baer,

2 4232

Please describe HT and LT?

1 2393

what is meaning of Power factor?????????

3 6886

different between electrical and electronics Engineering????

4 4184

What is the correct procedure to shutdown VCB in 11kv substation.safety and work procedure

EGA,

2 12520

when we conduct high voltage testing why milli amp. is required?

2 2837

Please specify the parts of VCB&ACB

1 3034

I want to know what is the short circuit level when 8 NOS 2000 kVA, 415v, 50hZ generator connected in paraller

1 3146

Why the frequency of ac in india is 50 hz but in some other countries it is 60 hz.

BARC, Fedco, Qasco,

1236

What will happen to the speed of synchronous machine subjected beyond the pull out torque? Are the behavior shown by rotor remains same for both the alternator and motor?

1 2724

why the efficiency of the dc machine is high ,when it is operated as a generator?

3 4278

I find that underground strip-armoiured,4core,LT PVC cables in an earthed power distribution sytem are occasionly found in charred condition-with no trace of it except ash. Is this because of no proper earth connection/continuity (giving rising to high armour resistance)in the joint enroute or because of insufficient capability (again due to high armour resistance)of cable-armour to carry fault current or due to neglected /unprotected overloading of the cable or due to high armour currents caused by power thefts where only phase(s) are unauthorisely tapped & at the point of poer consumption earth terminal is established by burring underground a not so good earthing rod (or using an underground water pipe for the purpose)

1 2233

Why do we mix soda with water in LRS?

1 5789


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Un-Answered Questions { Electrical Engineering }

Role of active and reactive Power sharing in between two synchronized Generators, Droop Setting role ?

897


impliment (AB)`+C to transistor representation

817


if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

984


how does directional relay work incase of ac ?

549


(1)WHAT HAPPENS WHEN SUDDENLY LOAD GIVEN TO THE INDUCTION MOTOR ? (2)CAN WE MAKE WOOD AS MAGNET ? (3)WHAT IS THE VALUE OF MAGNETIC FLUX DENSITY IN TRANSFORMER ? (4)WHY WE ARE USING ELECTROMAGNETI NOT ELECTROSTATIC IN MACHINE ?

1190






How to calculate fault level of 11 KV system

895


What is the difference between AC and DC injection methods for rotor earth fault protection

1203


how to check ac servo motor

1193


is there any role of power factor with frequency variation? and how we can manage the frequency variation?

1164


In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?

1160


hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?

984


Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks

814


any one guide me to reduce the power factor of diesel Generator from 0.97 Leg to 0.8 Leg.with out any change in my load.

729


The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

1023


how net resistance islow in star connection and viseversa in delta connection...? if anybody could explain in detail it wud be helpful.

730