Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

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.

2683

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 5510

Why substation battery room is coulered black?

1 4683

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

2 6142

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

MacLellan,

2 6912

why we use carbon brush in exciter&genrator?

ABB, SMC,

5 11951

what is the use of pmg in exciter?

3 8060

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

2001

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

3 7049

how is capacitor bank look like

2405

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

Areva,

4 19788

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

1 7422

HOW TO CALCULATE THE WIRE SIZE FOR THE GIVEN LOAD?

5 9880

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

Siemens,

1 4850

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

MAHINDRA,

2051

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Un-Answered Questions { Electrical Engineering }

3phase cable calculation formula by motor load

1519

What is conventional thermal current (Ith)

4443

Explain Even and Odd signals?

1906

what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct

1854

When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?

2070

How PSV sizing being done

2325

How to Design green buildings services? What is the advantage to design green building?

1811

define hysteresis loss, eddy current loss and windage loss

1996

What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?

6298

In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?

1977

Why negative feedback is preferred in the control system?

1258

What is frantic effect?

1268

Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

1979

how much GROUND & NEUTRAL VOLT maintain in data center.

2056

How do you select the pickup value of the relay?

1334

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