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Electrical Engineering Interview Questions

1061

what happen if rotor earth fault in AVR system?

4627

when elecromagnatic waves are propogated in a wave guide?

1070

what is thyristor, how is it works

2385

what is thyristor, how is it works

Sony,

1879

why only exciting current is shown not primary current in transformer???

995

How can calculate thermal overload in relay?

ABB,

3377

How can find thermal state value in relay for calculate thermal overload.

1027

For Electrical / and Electronic Systems, when we say efficiency is 80%, then what happens to other 20% from the Power consumption.? I.e. what happens to this?

1797

what is cogging? how it can be controlled?

HCL,

2192

5654

what is formula for calculate thermal overload in new numiricalrelay( not in bimetal relay)?

1361

what is the difference between CT and CVT in EHV Sub Stations

20132

tell me the operation of ELCB. How it detects a fault?

5299

what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable

1081

Un-Answered Questions { Electrical Engineering }

AL=0B9H,bl=75H, ADD AL,BL AL=____________? CF________? OF___________?

1643

what is transistors comprised of?

259

how can i change the rotation of the AC single phase induction motor and show me by diagram

901

any earth foult trip the relay but in welding time not trip by earth foult

2322

What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?

1227

Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

1282

in parallel operation of power transformer why the distance between power transformer and capacitor bank feeder is necessary to know

960

The specific heats of the gas at constant pressure and constant volume are respectively 1.0 kJ/kg K and 0.72 kJ/kg K; the value of R for the gas is

277

WHAT IS SPEC OF CLEANROOM MOTOR AND LIGHT FITTINGS?

1421

In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.

1401

suri transmission

3713

in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

1151

How to calculate Voltage regulation of 22 KV Over head Line.

793

What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

287

what do you mean by plant earthing system.

1152