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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

On what principle reluctance motors work?

1 3981

What is the difference between magnetic loading and electric loading of a machine?

2 36623

How the size of electic machine vary with the sped? Between slow and fast running machines of equal ratings, which one is more economical to design?

1 3491

what is the relation between frequency and inductive reactance in a d.c supply?

L&T,

2 7018

Why machines are avoided to work is saturation region of B- H curve?

3 5869

Why different values of B’s (magnetic flux density) are chosen for DC machines and Induction Motors?

1 3228

How the output,losses and temperature of machines varies with linear dimension?

1 4898

Why air gap in rotating machines should be small?

3 7843

Why rotating machines are not allowed to run near critical speed region?

2 6605

From stability point of view,What(higher/lower) should be the value of inertia constant of rotating machines?

1 3791

how to reduce humming noise in transformer?

3 10241

There are two nos of 33Kv/11Kv 5MVA transformers conecting through HT cable from substation having metering at substation itself.One transformer used at a time another remains stand by.Further 11 nos of 11Kv/440V transformers are attached on it and each transformer is having its own Power factor correction panel.Now one 33/11Kv transformer at no load condition/Stand by condition is having power factor in leading side upto 0.21 and while when another tranformer at same situation have power factor in lagging 0.42. Now one thing is clear that transformer one is having 1.5 Km long 33kv cable due to that PF goes in leading side and another is having only 250 mtr length remains him lagging. Now i want to know that how i can maintain the Power factor at no load/ stand by position though both are behaving in seperate manner.

1 6750

Why oil preferred over the air as a cooling medium for high rated transformer?

1 4368

What is emperical relation.Name few of them which are used in electriacl engineering?

1 4167

In the ACB breaker capacity is 2000Amp but this each phase taken 1250 But total beldibg load is 600amp or 700amp watt is the problem

1964

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Un-Answered Questions { Electrical Engineering }

what is control supply rating of a machine

1989

diff.between servo motor and ac motor

2052

application s to shunt coil

1918

why Lightening Arrester Probe sharp at Top of telecom tower.

1557

why we are using Load factor?

1955

help me with the question that might be ask on the interview for technical position

2290

Explain advantages of storage batteries

1102

how to calculate the change over time for star delta starter for different KW motor?

4228

SIR, GIVE ME OPGW SAG CALCULATION FORMULA I AM DAE ELECTRICAL. THANKS

6842

We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

1526

All tape of electrical questions Answers tape of motor transformer e.o.t crane

2657

how a flip flop can be used as a latch?

1994

what kinds of Transformer oil grade is better for power transformer ?

1644

define digital electronic

1985

What are the main parts of central chiller plant? Explain the function of each stage.

4801

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