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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

If we touch the Capacitor terminals you feel shock after the capacitor was put in operation and not in case of inductor though both are energy storage elements.why?

HAL,

4 10358

What is the full form of SON-T lamp?

HAL,

1 11800

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?

1903

why we did not get shock by touching +ve OR -ve busbar (Which are going to supply cell voltage) of Rectifier- Tranformer in electrolysis plant?

4 7277

why we did not get shock by touching nuetral of any single phase supply of a electrical equipement?

6 12160

whats the necessary to correct the power factor using capacitive banks in industries?

2 4741

what instruments used for measuring of inductance and capacitance.

2 6957

can transformer work on dc or not?if we increase the inductance of transformer can it happen to work on dc?

1 3882

One VFD is possible to connect two motors at the same time?

2 7090

how to save the power?

2 4662

How many different speeds can be obtained in cascade control of two induction motors?

1 3114

how harmonics are generated due to nonlinear load & how harmonic filters work?

1 5229

why we are using earth pit in sub stations.?

2167

What is the difference between generator and turbo-generator

iGate,

5 23364

1)we r having one problem .one dry type transformer(6.6KV/433V)is taking high magnetizing current on delta connected HV side of "U" phase when compared to other two phases.could any body tell the reason why it is happening? 2)why CT secondary side protection core has got higher winding resistance when compared to that of metering core of same CT?

2 5245


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

WHY NUTRAL GROUND SYSTEM USED IN 33KV SYSTEM

2212


we have a lot of model of rectifier but thyristor rectifier is the most rectifier that use in power system. Do you know why this rectifier is used?

1787


what is the range of maximum DOL and SDS can be use for pump and fan application

1115


What should be the length of transmission line so that we can see/obtain the full sine wave of voltage??

1900


what happen if the parallel generator phase angle shift by 1 degree in manual mode

2052


What is Load sharing of Transformer ?

2036


In the magnetic fluxes, what is the role of armature reaction?

1158


what is cause of static electricity? I experience shock when i touch metal equipment in a room ,furher check shows earth leakage showing 80ma at the DB near to the 400 MCCB?

1907


How does zener phenomenon differ from avalanche breakdown?

1165


Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.

2365


how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

2276


Explain about p.t?

1083


What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

1572


Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

1735


what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

2335