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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Multimeter show phase to neutral volt 230 the per phase but phase to phase 415 not show 460 why.

Intas,

1 5717

What happens if we run alternator on under frequency?

SRHHL,

2055

What is the reason that the humming sound is coming from the induction furnace panel?

SKS Microfinance,

2559

40 HP motor how many square mm size wire use for stator to motor & aluminium wire use ?

SSPL,

1 4379

Why capacitor is blow when I am starting motor ?

1 4272

What is ignitor and why it is use in Hpmv lamp ?

2 9320

What mean power grid fail. why power grid fail.

Intas, Tech Mahindra,

1 5685

Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..

2549

lenz law application and define

2786

If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

REM Electromech Pvt Ltd,

2075

how does grading rings & spacers in transmission line works? Working Principle?

2045

why Square root 3 used for three phase?

2 6096

How Grading Rings & spacers in transmission lines works?working principle?

1 4532

how is calculated the quantity of weight in hot test xlpe?

Hirbodan,

2472

I have 3 1000 kva single phase transformers and I wish to replace them with one three phase transformer. What is he kva rating of the new three phase, is it 1000 kva also or 3000 kva.

Central Moloney,

5 8433

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Un-Answered Questions { Electrical Engineering }

if sf6 gas low in gis what will happen

784

If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

2156

What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP

1678

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

2330

In motors how many types of cooling systems were used?

2023

how can get electrical c licence.now i am working in spining mill , transformer capacity 2750KVA. SANCTION DEMAND 2250KVA. PLEASE ADVISE ME . MY CONTACT NO 09944226823

1760

What is the abbreviation of NGT panel

1995

please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.

1627

State magnitude criterion.

1071

Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

2084

What is the formula to calculate the rating of power cable for three phase current.

2081

hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....

1689

Explain what cmos is and its benefits?

1064

What is resonant peak?

1060

What is the difference between isolators and electrical circuit breakers?

1124

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