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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how to calculate size of cable from motor current given and how to calculate full load current of a induction motor.

Aarti Steels,

3 5984

what is the purpose of commutator in DC motor?

3 5736

Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?

2 4392

What is earth fault?

3 6038

What is the function of Governor in Hydro Power Station? What is the Function of Lightning Arrestor Voltage Transformer (LAVT)?

2811

Why the transformers are rating in KVA.?

ISMT,

5 8145

for star delta connection,,why the contactor star not burn,when red,yellow and blue cable is looping.

Mahindra Water Utilities,

2 10468

1) Why distributiion system decided 11 kv, 33 kv, 66 kv, 132 kv, 220 kv, 400 kv, 2) In 3 Phase line terminal of capacitor, why used for power factor improvement. 3) Why used rating KVA in transformer?

1 4413

what is negative and zero impedance in 3 phase induction motor ??

2179

Why the magneti fields are not passes from southpole to north pole

SGML,

2128

formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?

2206

what is mean Boost voltage and what is working principle of Tube light

Trimax,

2 4478

what is timing for mccb 800A tripping?

L&T,

1 5424

What is different between hypo test and megger test

ABB,

2 11932

how much leakage current is allowed in MC61A L&T make relay?

Siemens,

3653

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Un-Answered Questions { Electrical Engineering }

Why AC & DC capacitor are use in UPS ??????????????????

2120

Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

1503

If 24 KVA AVR having Input voltage 200-400v, Output voltage 415+-1%, what will be the voltage if Load is 13A.

2097

What are the basic components of the feedback control system?

1053

what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?

2091

what is difference between speed mode and torque mode in motor?? explain in simple words please.

1596

sir& friends i want the collection of recent quetions asked in interview of top most companies please send me on my email san.jsr@hotmail.com

1802

What are the difference between normal application Transformer and Solar application Transformer?

1656

Explain the working of variable frequency transformer?

1155

hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks

2160

how i can calculate the size for fire cable

2021

In MEP Services what are parts of STP and what are there function?

3554

how does high earth to neutral voltage affects electronic circuit?

1954

Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

3909

WANTCONTACT NUMBER & EMAIL/ WEBSITE TO CONTACT THE SECRETARY,MADHYA PRADESH LICENSING BOARD(ELECTRICAL),K- BLOCK,3RD FLOOR,SATPOODA BHAWAN,BHOPAL

2082

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