Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why voltage drop will occurs in 3 phase line?

ABB, Servo,

12 26689

As all us know that the capacitor panel is connected to improve the power factor when it is PF is low. whether we can connect the capacitor panel on D.G. side(? If it is yes means why?

Aricent, Essar,

1 6379

How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?

1 7285

HOW TO CALCULATE THE CAPACITOR RANGE FOR LOAD FOR PF IMPROVEMENT? EXPLE:FOR 65 HP LOAD HOW TO CALCULATE CAPACITOR RANGE?

Al-Malik, All Star Electric, GEC, Reliance, Universal Industries,

12 46145

what is full form of lv and mv? 2.while we connect capacitor to generator what will cause for it?

ABB, Wireman,

4 32037

hw to calculate flc of motor ? data are:3-phase,50Hz,30kw

BRG, Reliance,

6 27679

how to find motor contactor rating and bimetalic relay rating? of 30kw motor which will operate on star-delta starter?

HCC, L&T,

6 21603

wht factor are considered to design ACB( air Circuit reaker) 415V

3 6747

hw to find transformer is in normal position? whether its in charged condition or not? except humming sound?

ABB,

9 14243

How can we calculate the fault level of the distribution system knowing the percentage impedance of transformer & subsequent equipments.

14 59986

WHAT HAPPEN WHEN CT SECONDARY OPEN DURING LOAD

Neco,

16 32401

HOW VFD USED IN ENERGY SAVING

ITC Infotech,

8 28427

whether the generating voltage can be made to be transmitted by means of signals to the recieved end or at the consumers end?

TCS,

6 9432

How do we check transformer losses and what are the ways to minimise it.

5 15447

if earthing is used in place of neutral how the circuit completd.

Epitome,

7 14949

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Un-Answered Questions { Electrical Engineering }

why using transformer and thyristor switch in 3 phase apfc panel

2873

What is the function of NER and NET?

2442

what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?

5132

What is dynamo?How it works and what is the function of dynamo in a DG.

2577

What is center gravity load in substation?

2419

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

2046

What is the formula to calculate distribution transformer De-rating on iron losses basis

1842

What is knee point voltage of transformer?

1138

Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection

8221

If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.

1969

Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?

3069

What is the difference between the transmission line and distribution line?

1165

What is EMC filter in VVVF Drive ?

2729

I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

2077

why we have and use 3 phase not 2 or 4 or other in power system?

2119

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