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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com

1967

we convert 66kv to 33kv then 33kv to 11kv,11kv to 440v.why not we convert directly from 66kv to440v?

HCL, L&T,

7 20681

what is the pre commissioning test to be carried out on LT power panel at site?

1 13588

Plz tell me how we can find that particular company has vacancy or not

L&T,

2272

HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????

1870

In any plant or substation main incommer voltage RY - 415 V,YB - 400 V, BR - 387 V(in commer feed from transformer 11 Kv /0.415 KV) why found voltage differance in each phase? plant have not self power plant it is depend on outsource grid

2 5331

Here iam a question with SYNCHRONIZATION PANNEL related issue, as i want to design a SYNC.pannel board iam giving the 2 nos of 1MVA Generators to sync pannel , then what wil be the out put of the sync pannel, whether it wil be one cable coems from the sync panel or two cables.. as iam using two transformers to meet my load demand, so pls clear me whether two cables comes from sync panel to connect to transformers or only one cable

3 5395

How to know motor winding is star or delta connected without see the information table and winding connection ?

NTPC,

5 14148

In 3phase supply Voltage will come around 370v then what will happen?(mean what will effect on electrical equipment like AC,UPS,Motors.)

NTPC,

1 3601

my first school?

1 3615

why there is a phase difference between line voltage & phase voltage ?

4 6779

can we use optical fibre to electrical power transmission ?

1 2695

what will happen if i connect the buchholz relay in reverse direction.

MAN,

1 5688

why we are grounding the neutral?

GE,

1 3129

state the functions of different parts of star delta starter.

1 8260

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Un-Answered Questions { Electrical Engineering }

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.

1755

What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?

2049

specific difference of ICT&Auto Transformer

1897

How cmd is calculated in case of energy neters

1915

hr round

2139

how to changeover ups in this power failur time?

2004

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1846

how can i change the rotation of the AC single phase induction motor and show me by diagram

1805

how does a submersible pump work..?

1884

Alternator rotor earth fault relay circuit

2078

List the characteristics of filter?

1072

Define average demand?

1362

How to design harmonic filter at the project stage without nowing the harmonics levels

2216

What is different type of Electrical curve and how it protects the equipment's while up-normal situation?

1816

please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com

1967

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