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Electrical Engineering Interview Questions

what is arc flash and what are the hazards involved

1117

wHAT IS CAPACITANCE LATCHING? hOW TO CALCULATE CAPACITANCE LATCHING? hOW TO SOLVE THE PROBLEM IF CAPACITANCE LATCHING APPLIED?

1071

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

1113

UG cable sizes were specified in sqmm. But practically its not coming to mesure. What's the reason for that? And how they specify the size of the cable?

897

one KVAR takes how much amps, and how to add power capacitors to electrical panels, for example if one of the MCC drawn 800amps means how much KVAR required

3808

WHAT IS THE TOTAL POWER GENERATION IN CHHATTISGARH?

1024

What is the difference between lubricating oil and insulating Oil?

8390

How we calculate the current carrying capacity of H.T. cabel?

Bhel,

1246

In Power cable specification what is U0/U and Um.

2412

For what purpose and why ACBs are used

3333

3-PHASE 15KVA dg IS EQUIVALENT TO 12 KW,hOW?

TATA,

5416

why can't we increase the voltage by increasing the field voltage in order to get higher voltage.so that we can eliminate step up transformer

Bhel,

4579

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

2705

Im designing APFCR Panel for 600 KVAR.I need to calculate the full current so that i can choose the capacity of isolator/Breaker.Kindly suggest with formula.

2559

what is deffrence between squirral cage and wound rotor in IM?

ME,

1057

Un-Answered Questions { Electrical Engineering }

why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?

950

1.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.

1072

Name the component u would expect to find in a switchgear assembly?

1142

specific difference of ICT&Auto Transformer

797

what happen if the load connected to the induction motor is taken away? the same question for synchoronous generator in synch i think that the the exitation voltage will appear on the terminal only if so plz answer me

1074

what is the effect of higher value of GD???

862

A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?

2857

Which types of gate insttaled in static switch. Please give me answer.

683

what is negative d.c. voltage, why this voltage is used in base transciever station.

1247

what is mean by kneepoint voltage? when it will happen? ( my doubt is, if CT secondary is open means ct get saturation or blas? what are factors are required for calculations? plz give currect anws:

976

how to measure the current by compact digital equipment with dislay which fit inside any equipment

977

The slip during plugging operation is given by= A 1-s B 2+s C 1+s D 2-s

1883

What are the disadvantages of autotransformer?

170

what is the meaning of 5% droop or 7% droop in AVR?

1430

draw the block diagram of fire alarm?

4433