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Electrical Engineering Interview Questions
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How can I calculate the require lumen of a room. If I use Tube Light (40 W), Or 100 W incandescent lamp. Please give detail answer.

 1 2950

WITCH CARDS IN USE IN FIRE CONTROL PANEL.

 1454

WE HAVE A LOAD OF 55KW MOTOR ITS VOLTS 380 3PH AND ITS TAKING 100AMPS (ITS FULL LOAD IS 105AMPS)AND ITS CABLE IS 4CX50SQMM ,NOW ITS GETTING ABNORMAL HEATUP IN CABLE,PLZ TELL WHY ITS HEAT-UP?(CABLE LENGTH IS 15 METERS ONLY)

 10 13392

If load current is 70amps or 50amps what range of CT to install for ampere metering

 3 5188

where HT & LT capacitor uses ?

NTPC,

2 10249

i want to syncronise 5 nos of DG. How? pls reply

 3 4516

I want single line diagram for AMF & DG syncronizing panel

 6623

How can i calculate the Breaking capacity of molded case circuit breaker, is the breaking capacity of CB for Diesel generator shall be less than grid supply's breaker ?

 1702

I have a 3 phase 600 volt prim. feed and a 120/208 sec. Isolateing tranformer .We are using this system for safety against shock . What is the proper grounding ?? Does the common on sec. get earth ground ???

1 2789

WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

 2078

why capacitance effect is predominant in underground cable transmission and inductance effect is predominant in over head line transmission?

 3187

why insulation cost is more in underground cable than in overhead line?

 2 2470

how can we calculate fault current of a line in a 6 bus syatem if the faulted line is known?

 1 2846

different aspects of voltage stability

 1534

HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?

Siemens,

3146

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Un-Answered Questions { Electrical Engineering }

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

1773

Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC

1572

is there any current and voltage drop on liquid resistance starter water/soda tank ?

1479

what is the clear formula to calculate cable size for a load

1471

what is under coal gassification?

1627




what is the use of surge suppresser in 33 KV incoming panel. where it must be installed,inseries with incoming cable surge suppresser must be at incoming of the breaker are outgoing of the breaker

4541

Is any generator is developed which is operated with out diesal or other expensive source?

1629

Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

1683

In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

1993

How to design the NGR Resistance

1605

WHY CBCT USE ONLY IN Y PHASE NOT OTHER PHASES

1622

WHAT IS MEANT BY DERATING OF THYRISTOR?

2457

how point on wave controller works.

2074

What kinds of decision are made about CT from it's Knee point(voltage & current)?

3800

how we findout a ignater is faulty or not?

1590

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