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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

When VFD is connected to a 3 phase main supply there is load current difference between incomer to VFD and outgoing from VFD.

Shasun Chemicals,

1 5775

What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva

Shasun Chemicals,

2215

two way ckt diagram can be drawn by how many ways? give diagram

1774

AVR is used for the Voltage regulation of the Generator using the feedback signal by exciting the field winding of the generator.But how the field winding will be excited & using what?

Alstom,

2 6391

i need of the bhel question papers along with answers and also give some website names for the downloading question (electrical and electronics engg question)please help me....

1908

neutral,ground & earth different b/w

2 5475

can we use 400w coke instead of 250w choke in 250w fittings

2 5105

If a fan get trip and run in reverse direction due to system flow. Now in this condition during starting how can a VFD bring this negative speed to zero and later run in forward direction?

Aditya Birla, Siemens,

2 6063

I have a transformer whose primary operates at 230V, 50Hz for which the secondary voltage will be 12V, 50Hz. What will be the secondary voltage if the primary is fed with 400V, 8KHZ Signal?

ABB,

6 10045

what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?

2111

in india ac frequency is 50hz, but in foreign countries it is 60hz,whwt is the reason

SVIT,

9 17581

why neutral should connect to earth in delta-star type transformer

4 9271

Why TAP changer provided in primary side of HT transformer ? and why not in secondary?

ABB, Reliance,

9 49123

why solinoid coil used in tripping rely?and why not other type coil?

1 2903

How to use a insulation resistance tester on a three phase electric motor?

2 6544

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Un-Answered Questions { Electrical Engineering }

What are reasond for high wattage in single phase induction motors

1891

How many gap between finger contact in a.c.b. and v.cb.?

1287

WHAT KIND OF LIGHTENING PROTECTION SCHEMS CAN BE ADOPTED FOR THE FLAT ROOF OF BIG DIMENSION.

2124

What is phase cross over frequency?

1132

use of choke in APFC panels

5821

Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .

2230

What is the difference between Encoder and Resolver?

3531

What is systematic error?

1370

What is the Surge suppresor? Why using in a UDB's and How it works?

2206

After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.

1980

how power is generated,and transmitted to our home..pls explain briefly in simple words.

2258

explain the mode of metal iranafer in Co,welding

1588

it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

2014

what is 3rd Harmonics? how it is generated in alternator

9485

why and how voltage sharing in transformer, during magnetic balance test ?

2355

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