Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is different bewteen low or high impedance busbar protection scheme

3672

Transformer Secondary maximum current (max. load)

3 6388

why the generator will take 8 to 12 hours to start after it got interrupted due to technical problems in case of power plants.

NTPC,

1 3544

Can we put 3 layers of cable tray while installing tray

NTPC, Siemens,

1952

pre arcing time of ehv breaker

1675

use of PIR in ehv breaker

1717

how ct burden,magnetising current,ratio and knee point voltage are related & derived

Dalkia, SCT,

1765

when current lags behind voltage how does it affect the circuit.In other words what is the significance of lagging current?

3 6134

how much Watt can we fully load a transformer

4 6552

What is the function of Igniter in 250 watt HPMV street light?

1 8064

how much amps will get from a 360/11kv line

2 3797

what is the MNA in case of d.c. machin? whaty is the importance of it? hoe it affect the brush position?

TATA,

2 6370

I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

1986

what is the meaning of stub protection?

1 4979

whatis knee point ?

L&T, Siemens,

5 8674


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?

1492


how to find impedance , mutual indatnce in transmission lines

1679


how to calculate energy of 3-phase motor?

1561


What is the Nyquist criterion regarding control systems?

663


PLZ EXPLAIN CORONA,SKIN,BIRD PALE,SPAN,SAG Effects of power cable.

1537






How is operate breaker failure scheme in substation

1539


if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain

908


what is the series parallel connection of capacitors? and how can we use these application in three phase motors for controlling torque?

1588


If short circuit ratio is high is it bad or good for a machine then tell the reason...

1609


What do you mean by transformation ratio of instrument transformer?

637


PLZ sent the previous year question paper for GET in NHPC on my EMail id ppshanker@gmail.com

4939


Whether power factor should be high or low? Why?

663


Mention how NPN and PNP transistor works?

707


what will happen when the dc supply is given to the capacitor?

1012


Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A

2578