Electrical Engineering Interview Questions

which type of motor complete it's one rotation in 30 day's.

3957

Are you connected Transformer neutral eathing with it's body earthing or earthing met of switch yard.? Yes or No ? why ?

3838

1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?

2124

what should be the acceptrd value of winding resistance for 2.5MVA transformer

1769

what is difference between earhing and neutral

7099

Find defination of KVA convert in to KW.

ABB,

7083

why the efficiency of generator is more than the motor in case of swinburne's test????

4295

a solar energy installation utilizes a three phase bridge converter to feed energy into power system through a transformer of 400v/400v.the energy is collected in a bank of 400v battery and is connected to converter through a large filter choke of resistance 10ohms.1.the maximum current through the battrey will be.2.the kva rating of the input transformer is.

GATE,

5360

what is the current law ?

Aster, TCS,

5554

why we need of power factor correction? give advantages

5026

1871

In power plant synchronizing time (synchroniging meter should be 12'o clock position only. why not 6'o clock position not possible.

2936

What happen to generator if i have unbalanced load?

1564

how can i get elcctrical supervisor license & Certificate of competancy in gujarat? i have completed my B.E (Electrical) course from gujarat.

5587

is it possible to export & import power in a same transformer.how

4752

Un-Answered Questions { Electrical Engineering }

Distinguish between nuclear power station with thermal power station for initial cost, starting period, cleanliness, and transportation of fuel

1466

Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?

1571

Why increase in current leads to increase in conductor temperature?

587

What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?

608

(1)WHAT HAPPENS WHEN SUDDENLY LOAD GIVEN TO THE INDUCTION MOTOR ? (2)CAN WE MAKE WOOD AS MAGNET ? (3)WHAT IS THE VALUE OF MAGNETIC FLUX DENSITY IN TRANSFORMER ? (4)WHY WE ARE USING ELECTROMAGNETI NOT ELECTROSTATIC IN MACHINE ?

1600

If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.

1762

Hi I'm doing my MBA(3rd semester).I applied for the post of ET conducted by BHEL the last year.I cleared the written and lost in personal interview.Again I wrote the exam this time and cleared the written n yet to take the personal interview.Shall I disclose in the interview about my studies.What shall i say if they ask about my change from studies to job

1578

How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?

1309

hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1460

Explain about 3 phase motor fault current calculation with examples?

2347

how much leakage current is allowed in MC61A L&T make relay?

3053

If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables

828

I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

3295

Can i use the B-curve MCB instead of C-curve MCB

1527

which protection used in power plant?

1435