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DEWA Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the minimum insulation value required for a cable between phase to phase and phase to earth of 380 Vac 50Hz circuit, having load arround 800 amps.

2 4560

what is second harmonic, how is effect transformer ?.

2 7675

what is the voltage of insulation megger that should be used for measuring the resitance of 66kv equipments.

3 5787

what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?

958

CALCULATE THE TOTAL VOLTAGE DROP AND SELECT THE CABLE SIZE IN MM-SQARE FOR A PANEL-262KW AT 110 METER FROM THE SOURCE SUPPLY , SUPPLY VOLTAGE 240/415

1586





Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.

1889

why we are testing cables with DC supply not with AC supply?

9 20614

why the impedence of the transformer is expressed in percentage?

3 6552

can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.

3478

what is the function of step up transformer?

1 1659

How to select the cable and voltage drop in circuit?

528

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1266