Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to calculate the current carrying capacity of electrical cables

Barqaab, Grasim, Havells, HM Cables, Janapriya, Polycab,

16 183057

how to calculate the loss tangent of electrical cables

1602

what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.

1619

why are use star delta startor.

4 17083

why AC cannot to be stored and DC cannot be transmitted?

IBM,

11 35693

what happen to the voltage and current in all phases when an earth fault occur in a phase in three phase three wire system(delta connected)...

1 4351

if we know Fault level say 25 KA , How to decide busbar size for Distribution network of 1000 Amp Breaker ? Sample Calculation or Farmula Available or not ?

TCS,

4 18007

How to select Main CB Rating for 187 KW Load?

6 9511

What is the Surge suppresor? Why using in a UDB's and How it works?

1684

I have 725KVA DG set how to Calculate the Ratio of KWH? Whatb is the Formila

HCL,

7 25495

How to calculate the CFM to TR? What is the Formula

Carrier, Voltas,

12 129769

what is efficient load of transformer in percentage

4 5842

why we use to transmit the power in three phases intead of single phase ?

5 7658

Explain the working principle of Synchronous Generator and Assynchronous generator?

1728

How many Cylinders are there in Diesel Generator?

4 5672


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Un-Answered Questions { Electrical Engineering }

Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?

1573


Can anyone explain me about the capacitor calculation

1701


How many lightning arrestors to be installed on 50MX60MX10M building and is there any formular for that?

1471


i have flexible wire. size of conductors is 0.190 mm & no.of conductors are 48. then size of wire comes 1.37 sqmm instead of 1.5 sqmm . the what is tolerance for this size.

1319


If SFU is Switch Fuse Unit, What is the expansion for FSHF in Electrical Engineering?

2051






How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?

1475


what is sevice settings for mccb?How can be it setted?

1478


HOW MANY TYPES OF FUSE?

1639


Why hydropower stations are preferred solution for meeting peak loads in grids?

570


how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

1894


why wire sizes are 3/29 or 7/29 and why not wire sizes are 2/29 or 6/29?

4655


I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR

1496


Define bibo stability.

653


what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network

3025


what is meant by surge? what we called for high currents?

1490