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

TNPSC Tamil Nadu Public Service Commission,

1416

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

SJVN,

2 3965

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

2 4510

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,

3 6536

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

Jayaswal Neco Industries,

3 10280

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,

3 14413

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,

1 4778

WHAT IS THE MEANING OG (li = 7 In)

1473

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

1277

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????

1789

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

Wartsila,

2254

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

1368

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

2 3237

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

Kwekwe Polytechnic,

3561

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

WCC,

1546


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Un-Answered Questions { Electrical Engineering }

How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com

1597


Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?

695


what is positive , negative & zero equivalent system resistance

1405


which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

1537


draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words

22088






how to calculate maximum current

1713


what is destructive and non-destructive testing of welding

1189


Pl.brief me any electrical major fault you have rectified.

1463


How To increase Knowledge Of boliler regarding To Only Electrical Field..

1111


How harmonic block test are conducted on relays ( Siemens,Areva ect )power transformer using omicron kit?

1730


How REF protects transformer alone? explain with diagram.

986


What is the tube exial fan?

1664


any one guide me to reduce the power factor of diesel Generator from 0.97 Leg to 0.8 Leg.with out any change in my load.

1179


what is meant by power and distribution transformer ?

1492


The shot circuit in any winding of transformer result? Explain

761