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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What is the difference between tie bus and bus coupler?

1 19546

Why does the radius of armature is less than the radius of pole shoe?

ABB,

2211

Why C.T secondary s2 done earthing?

4 15689

what is Harmonic effect?

2 5056

Star & delta kis principale pa hai.

ME,

3 6208

in dc machines in the armature nature of power is ac but why we take rasistance instead of impedance?

1 3652

What is the difference between Droop vs Isoch Control?

2475

Determine the BTU size of an aircon for 20 sq metre room

1916

why it is necessary to maintain frequency constant in a power grid ?

NTPC,

1 6228

what is the difference between electrical wire and electrical conductor?

4 19174

how to reduce earth resistance in sandy soil.

1 3923

How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer

2105

1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

4924

what is quality factor in series resonance circuit and calculate the factor of voltage magnification? how it happens?

BARC,

2018

how to change the load sharing between two synchronized identical alternators when both are running with Diesel engine? assume both are feeding to same feeder?

BARC,

1 3651

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Un-Answered Questions { Electrical Engineering }

What is purpose of reactor?.What is different between line and bus reactor?

1987

what is the main function of capacitors in mccs.

1779

What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

2438

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

2117

Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?

1862

In how we connect watt meter for open & short circuit test of a single phase transformer.

6820

Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

2096

hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .

1540

how does commutator convert a.c to d.c?

2236

Explain the method to keep noises low in a control system?

1193

In single phase ac ups supply when current is measured with tong tester neutral current is found more than phase current.What is the reason?

2170

How can ou verify the size of conductor 50Sq.mm ACSR

1993

How to calculate Ith (I thermal) for curent transformer

2133

what are the different methods for the starting of a synchronous motor.

1170

What is Phase margin?

1155

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