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Electrical Engineering Interview Questions
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In legging current reactive power is arise but in leading current which power will be arise ? and in this case, is active power more than rated ?

 3 3885

I Have 100Ah battery with 650VA Inverter, i WANT TO TAKE a Solar panel to charge my battery, so please suggest me,what rating of solar panel(with solar charge controller) can buy for a load of 450w for 4 hours

Chevron,

1 4510

What is Star Delta Connection, where it is applied & what for it is used

Premium Transmission,

4 5265

working method of railway electricl loco in single wire 25000 volt

 1 3152

A synchronous motor is operating at a leading power factor .if the applied voltage is decreases ,(the excitation remains constant ) ,the motor current a)increases b) decreases c)remains same d) none of these

 2 2749

DEAR ALL I have motors ( 10 units )each one is 90kw 380V 50 HZ 1000rpm but new local pwer is 220v 60 hz requierd rpm should be 1000 pleas what the beast solution is used frequncy converter or rewinding all motos or chang all motors thanks

GE,

6 5529

in shunt clippers why a resistor is used in sereis with the input

 1344

How would you relate your key competencies to this position?

 1541

is it possible to start a motor in felid connected to a remote mcc

BIET,

1213

why is used for starters for staring motors?

Amrapali, L&T,

6 6863

why is fan rotating slow speed, what is the problem?

 4 5551

1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.

ICS Integrated Computer Solutions,

1600

why battery dc voltage become Half when we check with respect to ground for example 120volts + and - terminals and when we check + terminal with Earth thats 60volts why 60volts same result on 24Volts and with ground 12Volts only expert answer that thanks we can not ground the battery.

Etimaad,

2 3705

In a incandescent bulb, if the glass is punctured, and then power is supplied, the tungsten filament blows up with a flash.Why?

 2 3818

xlpe cable 4 core nuetral wire is small why ?

3 3553

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Un-Answered Questions { Electrical Engineering }

What is the significance of integral controller and derivative controller in a pid controller?

466

WHAT IS START TO INDUCTION MOTER IN STAR TO DELTA OF >5HP ?

1248

If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.

1261

limitation of conductor height on ground when we consider EMC

1306

Write masons gain formula.

511




Where can i get practical knowledge of solar system?

795

What are the types of piano switches?

1276

WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC

1289

What’s electric traction?

496

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

1465

What is the drawback of static coefficients?

527

what is the size of cable for 15kw motor and 85 meter cable length using with vfd

1768

What is the transfer function?

467

When we connect the large capacitor bank in series ?

455

what is doid

2052

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