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 Transistors are not used as switching devices?

15 31091

what is the difference between electrical & electronics

Axon Constructions, Banking, GDA Technologies, Infosys, MBA, Satyam, Satyam Tech, Snow White, TCS,

245 357754

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

Afcons, Honeywell, Manlift, SIMS,

2657

my field of interest is T&D. plz tell something about that.

TCS,

15 25696

2 Diesel Generators 900KVA connected to the bus bar for essential load as an alternative for power taken from 11/440V 3KVA Transformer supplying this bus bar. my question here is in the event of power failure on 11KV side can I feed the power to 11 KV bus by using the same transformer as reverse feed, what will be the inrush current???

Ashok Leyland,

3 13342

what is the difference b/w winding insulation class and winding temperature class?

Bhel, NDPL, NTPC,

6 19089

why, when birds sit on transmission lines or current wires doesn't get shock?

College School Exams Tests, Infosys,

36 58698

railway exam in asst loco pilot old test paper

Indian Railways, Loco Pilot, RRB, Southern Railways, TATA, Vimal,

25 45535

why earth hole size is biggest in plug point?

RRB,

13 30039

why earth hole size is biggest in plug point?

Al Qabas, HCL, RRB,

22 45101

what are the types of transformers

59 94267

hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E

HPCL,

1979

What quedtion to ask a electrical maintenance technician?

Bhel, Royal Furnishers,

5 21309

capacitor is load free component but why ampare meter shows the current when the capacitor bank breaker close?

OPS,

4 9142

capacitor is load free component but why ampare meter shows current when capacitor bank breaker close?

Bhel, OPS,

5 15370

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1879

what mean by analog ,digital,numerical meters and relays? say the example?

2293

what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

2055

A jet of fluid strikes a plate What was the force required to counter it?

1873

What is the vector group of a transformer,how can it be found out?

2052

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

3841

What happens if i apply 500V to 440V rotary Switch ?

1831

What is the magnetic field (coil DC ) of Turbo Expander?

2073

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

2299

I want d.g.set our company

1884

what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

1893

What is formula calculation size cable wire ?

1947

Write the force balance equation of ideal spring element.

1255

what is the pre charge circuit,what will be work which function it will be use plz tell me

1926

what are the breakdown voltage rating of mini- curcuit'transfarmer!

2172

For More Un-Answered { Electrical Engineering } Questions Click Here