Electrical Engineering Interview Questions

As i want some model question paper in basic computer science and history please send me immediately sir

1446

a transformer can have zero voltage regulation a)o pf b)1 pf c)lagg pf d)lead pf

SJVN,

4059

1) How to calculate battery backup for ups as well as solar with complete formula elaborately......

4569

phase association of 3PH L&T static CT meter is wrong. means 1PH & 1 CT connected properly and other 2 voltage and CT's inter changed. what would be the impact in the reading?

KSEB,

6820

explain the f=np/120 this equ.how to come 120

10401

In a 3 phase,400v,4 wire system, 2 incandescent lamps, one having 230v,100w and the other 230v,200w are connected between r phase- neutral and y phase-neutral respectively. If neutral wire breaks which lamp will fuse first and why?

Eskom, SSC,

14615

a solenoid of inductance 250mH and resistance 10ohm is connected to a battery. the time taken for the magnetic energy to reach 1/4th of its maximum value will be?

SSC,

4838

WHAT IS THE MEANING OG (li = 7 In)

1540

Direction of flow of active power and reactive power with logic?

1320

take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????

1821

what is the id1 & id2 setting in differential protection relay of CSPC?

2294

what is the difference between gas group b and gas group c electrical equipment construction wise?

1393

1.how to calculate energy units in our home at singe phase, 2.415V,63A wiring what will use thickness of wire

3300

On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

3614

Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?

WCC,

1586

Un-Answered Questions { Electrical Engineering }

A system absorbs 100 k J of heat and the increase in its internal energy is 100 kJ; the work done is

778

what is the transiant condition in alternator? and how it can be prevanted?

1511

Why increase in current leads to increase in conductor temperature?

666

Enlists the applications of sampled data systems?

661

what is JE exam?

1710

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.

1987

What is Delta Connection? What is meant by Forward Delta & Reverse Delta & How Will be the Connection in Power Transformers?

1823

Is it possible to use a S1 duty class motor for crane application (S4)? If not, why?

1901

I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

15197

why impudance relay used for medium transmission power system? why not others?

928

how to synchronize 3 phase slip ring induction motors of different ratings.

1796

1735

what is the circutor?why we use it ?

1841

how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????

1876

Define the three phase formula fuse.

1407