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Electrical Engineering Interview Questions
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What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.

1728

A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque developed is 20 Nm under rated field condtion. the speed of the motor under the rated field condtion , when it is connected to a 100V DC source and delivering 10Nm torque....

DRDO,

2 3500

Why substation battery room is coulered black?

1 3324

why Power transmssion voltages are as 11kV,33kV,66kV,220kV and so on only?

2 4546

Why in india freq. is 50HZ & in U.S.A. it is 60HZ?

MacLellan,

2 5036

why we use carbon brush in exciter&genrator?

ABB, SMC,

5 8812

what is the use of pmg in exciter?

3 5708

what will be d.g. capacity to cater together for 14hp A.C. load & 3kw lighting load

1163

why we multiply 11 in High Electric supply?(eg.11KV, 33Kv, 330Kv etc.)

3 4880

how is capacitor bank look like

1530

HOW TO FIND THE PRIMARY AND SECONDARY OF TRANSFORMER(IN OFF CONDITION) USING MULTIMETER? IS IT POSSIBLE FIND BY SEEING RESISTANCE???

Areva,

4 16920

FOR ELECTRICAL TRANSMISSION TOWER WHAT SHOULD BE THE MINIMUM HEIGHT FROM THE GROUND? AND WHAT SHOULD BE THE DISTANCE BETWEEN THE TWO CONDUCTOR?

1 5983

HOW TO CALCULATE THE WIRE SIZE FOR THE GIVEN LOAD?

5 6827

WHAT IS THE USE OF STARTER AND CHOKE IN TUBE LIGHT?

Siemens,

1 3463

calculation of lad carryinc capacity of 6mm2 cross section wire in 415 voltage circuit. What will be the amps.

MAHINDRA,

1148


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Un-Answered Questions { Electrical Engineering }

what is the need of starter in tube light and what type of starter is used in that?

1136


CBCT selection

1321


please give me solution to rectify the emi(electromagnetic interference)

1060


what is the current setting for different relay protection for transformer .

1340


I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1186






why output is out of phase in case of common emitter?

1227


how we can calculate chiller required ampear?

1184


what is the difference between active power and reactive power and apparant power in practical as well as theoritical

1050


How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V

1191


What are n circles?

258


How stabilizer works??

1206


For RCD (Residual current device) Icu is defined. How i can find Ics for them?

1191


What is meant by sag?

238


What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1002


Tell me in detail about c.t. And p.t. ?

305