Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why we can choose induction machine in wind mill? why can`t use synchronous machine?

3 3458

what should be the air clearence between phase to phase, phase to earth in Medium voltage switchgear for 3.3kv,6.6kv,11kv,22kv and 33kv? Which is to be referred for this?

DLF, Sanmar, SEC,

1 5213

what are the shades for mimic diagram i.e for 3.3kv,6.6kv,11kv,22kv and 33kv? which is the IS for mimic diagram?

2 4858




What is Vk and Imag i.e Knee point voltage & Magnetising Current? How to calculate above values? How to define accuracy class 5P10?

Transco, Torrent Power, Deccan Cements, Doosan,

7 38137

FOR WHICH FAULTS OR CONDITIONS DOES A TRANSFORMER DIFFERENTIAL PROTECTION DOES NOT OPERATE???

10 6769

WHY DIODE IS CONNECTING ACROSS SWITCHES

5 6166

what is the meaning of bus bar, in electrical panels.

HLG Habtoor Leighton Group,

13 39697

what is a lightning arrester???

ABB, NTPC,

12 15536




flurescent bulb rating is to 230v,50HZ.now flurescent connected 230v,25HZ.whether nreduced frequency will affect the glowing properties of flurescent.

6 4388

what is ac servomotor??

7 5394

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

1 1984

what is the effect when the shunt field winding is opened in dc shunt motor (i) at the time of starting ? (ii) in running condition ?

4 11608

what is relation betn. KW & KV?

10 28482

One watt is equal to how many? we says one watt bulb,means what it consume?

3 4953

Will u plz give me simple diagram for tube light connection & also function of chock?

TCS, Jindal, Bhushan Power Steel, Windmoller, Dalmia Group, Practical Viva Questions,

8 20967


Post New Electrical Engineering Questions






Un-Answered Questions { Electrical Engineering }

what is the illumination level required for child play area?

861


what are the advantages of Horizontal isolation breakers v/s vertical isolation breakers in medium voltage switchgear class.

963


if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?

793


Difference between low impedance and high impedance Restricted Earth Fault

1682


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

796






I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.

580


impliment (AB)`+C to transistor representation

496


how many Classification of fire extinguisher

868


why induction motors are rated at 0.8 power factor.

789


What is EHT tariff or Power factor Tariff ????

1086


ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

712


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

1081


What is notching in dc machine?

701


working principles of cf lamp,incandescentlamp and f lamp?

1056


why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

782