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Electrical Engineering Interview Questions

What is the difference between grounding & earthing?

18473

How to specific gravity of battery will check, i didnt saw any hydrometer. & say me how to dip into the battery what are the specifications are given in the hydrometer?

2897

What is the d/f between DOL & star delta starter & automatic star delta starter?

152173

What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage

5173

How LT megger works ?

1115

some times voltage does not built in small generators why ?

2785

what is the effect of power factor on DG supply,i mean to say what will the effect if we add capactors on dg supply.

HCL,

5354

What is the effect if power factor is above 1 or unity.

NTS,

38368

what is the effect if we add capacitor on DG supply, it has any loss or benefit.

9865

what is the difference between upper impedance and lower impedance distance relay?

8117

whate is the meaning of balance/unbalance,in stabilizers type

TCS,

1242

what is the highest transmission voltage in india???

37936

what is the application of dynamic Breaking resistor in inverter ? & How it works ?

5452

if 15 kv is grounding directly what will happen?

7175

how the works electronic energy meter?

Bhel,

1279

Un-Answered Questions { Electrical Engineering }

Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...

1359

why dc is used in control circuits for MV & LV switchgeras instead of ac

1031

how you configure motorvision relay (L&T make)from DCS

3821

what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?

1171

how can we say that stator magnetic field rotates with synchronous speed?can we derive?

918

hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx

1124

What products have you designed which have entered high volume production?

1089

What is the basis for framing the rules of block diagram reduction technique?

366

In Plumbing services What are accessories we consider for a bathroom?

1098

what are the difference between PLC and embedded

1249

what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?

4212

Where is servomechanism used?

244

Why you are switching off arc protection mcb when you are taking shutdown for lv board.

797

What is the tube exial fan?

1142

Why space heater is required for each verical bus bar chamber? if one space heater is adequate or not for anti condensation?

1684