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 inverse definite minimum time lag relay? Where is it use?

TATA,

2825

How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

MSP, Toyo Denki,

3311

What is the current flow in 230v ac supply ? What is the current flow in 415v Ac supply ?

1 6242

what is the value of the earth resistance in mositure place

HCL,

3 6013

if u give d.c. supply to transformer primary then what happen.&why??????????????

DCS, DRDO, HCL,

4 9410

how to calulate transformer secodary fault A?

1 4470

why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?

Alstom, L&T,

4 16336

A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

1 5504

The iron loss in a 100kva transformer is 1 kw and full load copper losses are 2 kw, then what is maximum efficiency occure at a load?

MPSC,

3 8983

What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!

IFFCO, IIT,

2206

what is the use of terminals in transformer ?

Core Solutions, Honeywell,

1 5256

which is the best, A/C DRIVES or D/C DRIVES for cranes,...... ...and why......?

Alstom,

2 5986

What is the full form of CNC in electrical mechines.......?

Alstom,

1 8644

How one may guess the direction from which the distribution line is incoming if there is no pole plate on poles?

2184

what is power factor

Exide,

5 8945

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Un-Answered Questions { Electrical Engineering }

what is the Pickup/drop off ratio in BCPU relays

4651

True or false question. 1.The fuse provide phase and neutral 2.power loss in electrical circuit can take place in (resistance or inductance or capacitance). 3.two phase system each phase has separated by a phase difference of (90 or 180 or 270 or 45). 4.3 phase balanced star connected load neutral current shall be (line current or phase current or zero or unity)

1590

who can measure the size of power cable?

2163

What is the actual meaning of thermal power efficiency ?

2178

what is the efficiency of thyristor

1648

Why the efficiency of generator is more than motor in swinburne's test

2031

I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?

2310

what is frequency response?

1150

I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

1755

what is the excess air in furnace

2046

What do you mean by passive circuit elements and why these are called passive?

1198

Generator,motor and alternator Working principal Please explain easily

1479

if sf6 gas low in gis what will happen

828

please give me solution to rectify the emi(electromagnetic interference)

1919

placement paper samples of mspl company

1945

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