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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 4599

how to converate kva to kw ?

4 7094

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

DPL, NTPC,

5 8102

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.

1765

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

1 4132

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

1 3956

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

Bhel,

2 4820

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

NTPC,

1 9809

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

L&T,

2150

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.

2052

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

1 3845

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

1854

why are u join ntpc

NTPC,

2108

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

Descon,

2137

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 6132


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How to set a Zone 1 distance relay for distribution feeder?

1970


why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?

2112


I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

1901


Why do we mostly prefer to generate and distribute electricity in 3 phase and not in 4 phase or 5 phase?

1176


i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

1858


What is the use of iron core in a transformer?

1083


Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

1870


what are the stresses in circuit breakers ?

1977


What are stable systems?

1042


What is a compensator?

1029


Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station

1964


Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm

2148


When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?

1863


What is the function of RCBO? What are the different sensitivity ratings & each application?

2770


What consists of 2 or more thermocouples to be connented series?

2265