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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the difference between high impedance & low impedance

L&T,

1 3263

how to converate kva to kw ?

4 4345

For 300MW and over a distance 250 km, what voltage be selected? and no. of circuit?

DPL, NTPC,

5 5275

can any one suggest me the tilt angle of my solar pannel ?? or tell me how can i know the fix tilt angle of my solar pannel?? my cordinates are 31.503629,72.993164.

993

What is the criteria for deciding whther fire wall is required between two power transformers

1 2544

Why we have use 3 & 1/2 core cable use for general electrical supply arrangement

1 2731

What happened when the field winding of dc series motor is open?

Bhel,

2 2902

What is the distance b/w R&Y phase in 33kv T.line,11kv &440v

NTPC,

1 8267

how to differentiate a mpcb,mcb with a contactor? Explain their working operation

L&T,

1230

How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

999

what is the function of avr when synchronous generator act as synchronous motor

1 2600

at work i have a genertor/alternater what is the easyest way to work out if it is dc or ac?

977

why are u join ntpc

NTPC,

1311

why 3 phase is converted into 2 phase using electronics circuit why not 2 phases are diresctly putted from the 3 phase transformer??

Descon,

1283

I have calculated load for an office building which is 1200 KW as all the load is single phase therefore its 1200 kw single phase. Now i have to design Transformer and Generator for this load Please kindly give me exact answer that how much capacity of Three Phase Transformer and Three Phase Generator is required for this load.

3 4242


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Un-Answered Questions { Electrical Engineering }

what is sevice settings for mccb?How can be it setted?

1167


what are the factors to be considered while design the breaker either HT or LT??

1045


How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?

1087


Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

1505


IN 1000kva transformer where the oil and winding temperature sensors is connected

1615






During underground cabling in landscape area what did we cover the cable with to prevent the electric shock & protect the cable?

1045


What are the advantages of autotransformer?

221


if two transformers are placed parallel & both have fault impedance of 50KA will it increase or decrease show example?

1161


What is dielectric loss?

251


I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

992


What is the classification of hydro projects based on installed capacity?

240


testing of Vector Group – YNaoD II

1932


why we get 2 differnet values for power factor in 2 watt meter method in 3 phase

992


when elecromagnatic waves are propogated in a wave guide?

1076


What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?

860