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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

in alternator permanent magnet generator is also connected on the alternator shaft,then y that PMG voltage is very low as compared to alternator?

1 3199

Difference between transmission line and cable?when ever a large water channel has to crossed it is easier to use cable then transmission line why?

1 3160

why 2 phase is used in argc furnace? why 6 phase is used in converting machinery?

1 3037

what is tpmo switch

3 30574

What are the different auxiliary protections of a transformer?

CESC,

1 3417

The neutral&earth voltage is 0v.But we were connected the lighting load at the time ballast was failed.why?

1 3521

Why transformer use to generator neutral earthing purpose ?

1 4510

There is two transformers of 2MVA & 3MVA, which transformer is located at the sending end & which is at receiving end. why?

3 6493

Which has more losses, AC or DC??

Infosys, TATA,

4 16828

What is plc and how to do preventive maintenance

1 5499

why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?

1842

how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)

2371

why it is unable to birds to be on a 220kV 0r 132 kv lines like on 33kV and 11kV lines?

MSETCL Maharashtra State Electricity Transmission Co Ltd,

4 8275

what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?

2080

what is the difference between a hooter and a mcp

2 12301

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Un-Answered Questions { Electrical Engineering }

How the setting of the vector surge relay shall be calculated when the relay is to be used for Grid islanding application?

2266

How will polarity test of Dy5 Transformer ?

2271

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

2234

A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

2272

how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

1990

what is there inside an inverter and how it works?

1837

can any tell me why slope 40% and 80% is calculated in differential protection?

1891

why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.

1990

Which motor connection is preferable star-delta or delta-star?

1087

what is meant by power and distribution transformer ?

1990

What is control system?

1215

If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

2204

What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

1672

How to reduce -234126219.6403 MVAr generation and by what?

1631

Explain about p.t?

1086

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