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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

We are using 3core 11KV HT cable for same phase for generator outgoing, the cable leakage current is high and cable heated overly what is the remidy, if we use the 3core cable for 3phases the problem is solved are not?

1 4215

why the star delta motors burn out frequently

1 3877

In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.

1929

why the generating / transmitting voltage is in the order of multiples of 11(ie 11kv,22kv,33kv......)

1 4630

How does a system control centre in a utility plant gets the grid frequency of the electrical network (50 Hz or 60 Hz)by the SCADA system?

1 2518

What is the difference between an ELCB and a RCD?

Schneider,

2 7038

What are the advantages and disadvantes of delta and star connections in transformers and alternators?

3 17357

why voltages are multiple of 11 or 1.1???describe with derivation plzzz.thanks

2 6042

1 ton AC takes how much current( starting & stable)

15 101549

what is power frequency withstand and impulse withstand of a circuit breaker?

Power Grid,

2 23063

why low pressure side of the turbine is connected to the alternator and not the high pressure side??

1 4411

what will happen if delta - star , 400V to 6.6KV step up transformer neutral is not grounded, Neutral is not used but transformer is provided with neutral.

2 6354

why rating of alternator in kva & induction motor in kw

Siemens,

9 19428

What is VVVF Drive ?

3 24979

What is the typical power circuit configuration of a VVVF Drive ?

1 4711


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

2019


Why using synchronising methed in DG's sets?

2166


In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.

2076


what is the formula of starting current of 3phase and 1 phase motor???

2273


I'm looking for a mnaual set for a Teradyne J750. Softcopy would be preferred but I'll take what I can get.

2166


what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

2171


Why we are going for converter transformers for DC drives application instead of distribution transformer?

1955


at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

1754


Why 11kv to be generated in generation station

1619


What are the function of different components of servo motor?

1991


How wire size can define in electrical wiring? What is the ratio?

2258


which type of motor is used in automatic swing gate

1965


HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS

1834


state the working principle of incondenscent tube?

1905


Air circuit breaker safety

1366