Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the working principle of DC generator ?

HCL, DRDL,

10 12072

In zero voltage we can pass supply to our body means we cant get shock its true ? how we can do it ?

4 2403

what is the difference between brushed alternator ,brushless alternator & permanent alternator ?

1 21549




What is system earthing?what are the types?

ABB,

1 1603

why it is so called as xlpe(cross linked poly ethyline) cable?

807

How single phase & 3 phase motor select rotating direction ie clockwise/anticlockwise

DRJ ARDE,

6 5599

a 50hz motor to give 60hz whats happening in motor.what happen the motor.

6 4869

in Megger what type of voltage(AC or DC) are produce.how they work.

1 7817




An AC coil to give DC supply whats happen in the coil.what type of problem are create.

2 2690

An AC Motor to give DC supply what happen the motor.whats the problem are create.

2 2876

what type of motor are there in megger how they work.

2 2897

how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)

708

phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this

Areva, Kim Yew,

3 15245

how to calculate the capacitor to maintain power factor?

Bosch,

831

What is expand formation of AYFY cable

HP,

2 2797


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Un-Answered Questions { Electrical Engineering }

why use phase displacement in transformer.and effect of phase displacement on transformer

1526


what is the function of statics switch in ups and tell me parts

719


What safety followup during kWh meter isolation

728


How to test Alternator stability test for REF relay

159


Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

569






what is the difference b/w UHVDC and HVDC(LIGHT)?

2557


The capacitive reactance of a capacitor of 1/(2(PI)) F at 10^3 H is

669


when qty of cable being purchased is not sufficient according to the standard,what should the inspector do to ensure its quality according to the standard?

704


what is meant by rotating magnetic filed

703


I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF

2612


What kind of maintenance is conducted for Transformer

901


what are the main applications of transistor in non-linear region?

660


i need about 10 years of GATE solved papers in pdf format and even mock tests toooo

431


what is per unit calculation?looking for simple and strong explanation thk u

1251


why we cannot protect 100% winding of an alternator by using differential protection?

826