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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....

Essar,

1846

How to calculate 5hp 415v 3phase 2800rpm Ac motor full load current with out tourgh

Siemens, Spatel,

1 4332

are there rmu for 3 transformer?

OSC,

1845

what is G.O.D.S. ?

RCE,

2 4337

according to ohms law ,the voltage increases then current is what happened?

NTPC,

4 5633

I want to know which cable would be best to carry 125A current to a distance of 50m. Voltage is 3phase. Kindly share the formula with answer.

Medway Educational Consultant,

1 2974

i have 1500 kva generator how much maximum load avilable of use

Dr Reddys,

1 3130

what is dc system? how getting pulse from rectifier?

ETA,

1 2962

Why battery is always operate on dc supply?

Vikram Ispat Industries,

1 2929

how to calculate the size of the HT cable

1849

When alarm is activated in buccholz relay in transformer

1 2948

Why inductor short on dc and capacitor allow to flow ac?

1 4031

Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

1711

In D O l starter motor starts as a star connected ,then in star delta starter also motor initially starts as star how come star delta is preferred from dol

2 3088

Both generator parallel condition shared load equally but one genrator taking ampere more than the other what are all the causes to make like this

Ofer,

1704

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Un-Answered Questions { Electrical Engineering }

HOW TO CALCULATE CAPACITOR BANK OR HARMONIC FILTER CALCULATION

2252

In siemens PLC, why do we want to move the data ?

2278

How relay coordination has to be done? what are the inputs are required for this? Please explain this with calculation method?

1754

What is Tachometer used to measure?

1196

what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.

2384

whether fibre optic cable in high voltage earth conductor is used for protection circuits

1577

what is circuit breaker in transfomer and where it used

1133

I don't understand why when we connect high voltage source in DC to electronic motor , we must add capacitor and resistor in parallel ? (I know that we use capacitor because we want to absorb the current that in the first second electronic motor in opposed with current course produce. ) what are the feature of Resistor and in such situation ?

1814

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1822

IN 1000kva transformer where the oil and winding temperature sensors is connected

2480

What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

1612

can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...

1947

what is the method of earthing of a transformer using electrodes?

2219

are there rmu for 3 transformer?

1845

State norton’s theorem?

1069

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