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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

If induction motor load is incresed motor speed decrases.But in syncronous motor load incrases speed canstant why?

5 15601

how induction generator generated the power without excition like syncronous generator.

3 3750

what is function and advantage of double delta winding in induction generator?

1 2390

WHAT HAPPENS IN DIFFERENTIAL PROTECTION IF CT REACHES ITS KNEE VOLTAGE POINT?

Jindal,

4 8102

what is RMU ?

MacLellan, Shalaka Infra Tech,

26 101207

for ac networks if the voltage wave form is V=Vm sinwt here the voltage Vm=230 for the frequency 50hz then the time period is 0.02 sec then for the time period 0.12 sec what is the voltage

4 16249

testing of transformer

Vijai Electricals,

1 3115

why transformer core is eathed?

ECE,

7 26185

NOW A DAYS THE POWER SUPPLY IS VERY LOW.SO THE FLURESCENT TUBE LIGHTS ARE VERY DIM.IS THERE IS ANY WAY TO INCREASE ITS BRIGHTNESS?FOR EXAMPLE ANY CONVERTER,CONDENSER?

Bhel,

1 3001

what is the difference between ELCB and RCCB

Concorde, Hyundai,

5 9263

How to design constatnt power source with variable current and Voltage.

2 2977

where can i get the previous years question papers for APGENCO exam.

2627

What is the meaning of Dyn11 of Transformer.

17 116404

why return path in terms of neutral is required please give a relevant answer

3 4127

Name different types of circuit breakers and their voltage ratings?

NTPC,

11 34566


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Un-Answered Questions { Electrical Engineering }

What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?

1047


how to calculate energy of 3-phase motor?

1155


why ups rating in kva? and why ups are in parellel?.why isolation transformer is used in ups?

1077


explain the mode of metal iranafer in Co,welding

786


What OPGW is better than Microwave or PLCC???

3222






What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..

1099


What should be current in the Primary and secondary side of 1000KVA (11KV Supply)Transformer.?

226


why ss stablity limit is more transient stablity limit?

1256


Why Neutral Isolation is required?

1397


Difference between control junction box (cjb) and power junction box(pjb)?

1442


what about the power of wattmeter at starting and loding?

1265


why to use freewheeling diode ( diode in revers bias mode) across dc coil

2833


How maesure earth neutral value & how much maximum value value required in between earth & neutral.

1241


Define resonant frequency?

239


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

1778