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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why earthing transformer used in Distribution Sub-Station?

3 12315

how to calculate the voltage drop in electrical cable while laying cables?

2 5627

when ur using single phase type of load for a 3.5core power cable .Why neutral is .5 and how much current in the neutral if we consider neutral as a reverse path for three phases.

2 5629

what is the working principle of dc motor & its application ?

3 7835

what is the difference between brush & brushless dc motor explain its operation ?

1 5653

What is partial discharge in power cable?

1 3277

why rating of motor in HP ?

2 5780

following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

2061

Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection

8225

how to calculate cooling requirement of datacentre from electrical load?

2409

Is any generator is developed which is operated with out diesal or other expensive source?

2108

In a house wiring why we are using only one neutral wire and so many phase wires from the main board, when the load is common for both wires?

3 17045

plz tell me Motor IP formula

2004

plz tell me about detailof induction motor Slip

2 4964

plz tell me about BACK emf and how it generates?

2 5554

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Un-Answered Questions { Electrical Engineering }

how to calculate the breaking capacity of different breakers.

2295

How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

2332

how much winding resistance of 0.75kw to 12.5kw 3ph sqwiralcage induction motor?

2998

what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)

2158

what is gas turbine intercooling ?

2110

Write down the design procedure of commutaj.

2133

why should the primary of transformer be connected in delta in a heat run test?

1979

hi frnds what is meant by harmonics & what is meant by third hormonics,where its will occur ?thank u

2012

How line capacitance & line inductance varies with increase in height tower.

2334

1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve

1997

what is meant by neutral compensation factor and where it is used

1914

why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

1999

1.main parts of generator? what is used A-check,B-check,C- check? 2.what is FM200 system in data centers? 3.difference between pac,ahu?

2131

Explain Creepage Distance of Insulator

2218

What is called limb of a transformer?

1041

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