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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

which is the slowest motor? and wt is speed ?

1 5287

How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?

5370

why constant voltage transformer should be start without load? and if started then what will happen?

2003

what perpos use cepacitors in motars,fans,lights,and LT panal

1 5291

Difference between on line capacitor and Station type capacitor

1971

Difference between on line capacitor and Station type capacitor.

1 3841

Transformer not operated in dc ! why?

10 13535

Why in USA supply voltage parameters(230V,60Hz)are different,is there any advantage please brief.

APC, DRJ ARDE,

1 5432

what is the most probable reason of failure of current transformer?

L&T,

2 14699

what is transformor oil gread

Idea,

2478

ganaretors A check B check and C check details

1 4241

IN WHICH MODE THE TRANSFORMER WILL GET A MAXIMUM OUT PUT VOLTAGE. ASKED FOR POWER GRID EXAMINATION STAT-STAR,STAR-DELTA,DELTA-STAR,DELTA-DELTA

3 6366

1. Why transfomer reting in KVA and Motor in HP

AirIndia, Jindal, Mind Tree,

11 20680

why the admittance matrix or y bus matrix of a large network is called sparse matrix?

3 24577

what is the uses of C.V.T transformer in switch yard?

L&T,

4 11157

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

1301

how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....

2007

can we use NPT glands in LT panel

1793

In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1916

What is the effect of solar radiation on the design of an Isolated Phase Busduct?

2314

Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?

1059

Why the cores of large transformers build up of circular cross section?

2247

I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok

1627

Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..

2549

Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?

2019

why we are using earth pit in sub stations.?

2100

ult of expression 'document.FrmQF.myem

2032

What is d main advantage of using double circuit 3 phase transmission ?

1895

Why PS class CT is always preferred for Differential protection?

1552

IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM

2118

For More Un-Answered { Electrical Engineering } Questions Click Here