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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Which type of starter to used which type o motor

Crew pvt ltd,

1804

Dear sir, please tell me how many day use CTPT transformer

Daya Engineering Works,

1 2860

What is the kva?

Makino Auto, SAL Steel Power, Sapphire Group,

2 3748

Why NGR is provided in sub station?

MMS,

4 4982

why moisture formation found in XLPE Armoured cable outer sheath

1817

I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.

MindSquare, Sical,

1719

transmission line losses

SVS Constructions,

1 3073

Why R ph of Hv and Lv is shorted or joined together while taking vector group?

IOCL,

1 3026

working principal of online ups

Delta Power Systems,

1767

Why line VTG = √3 phase VTG in star? How?

Endurance International Group, Infosys,

1619

Why Generator KVA not in KW ?

Bygging India, HHH, Tata Motors, TVS,

3 5202

what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

AB, JLL,

1616

after applying C-License in how many days we get it?

2 3001

750kva 11/415kv transformer having percentage impedence is5.64%. 11KV HV whose current 39.37A and 415V LV whose current 1043.43A.resistance is 2.5ohm. find no load loss and full load loss?

2 3111

I have 30 kw motor load & i have selected 10 kvar capacitor bank for power factor improvement.my existing p.f is 0.85 & proposed p.f is 0.99 so ,is it right selection? 2 nd question how to connect c.bank whether in delta or star connection & how to decide it?

1 2908

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Un-Answered Questions { Electrical Engineering }

How many energy meters can be connected on a 15VA Voltage transformer. please send a calculation sheet.

1943

armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?

1909

What are electric motors?

1158

how to test the turn ratio of 3 phase transformer using volt meter shoe the curcit diagram.

2454

Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

2139

How to check 11000/1.732 to 110/1.732 Potentila transformer (PT)?

2208

what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

1676

Write down the brushes of a de machine.

1895

what is the difference between Power and Distribution transformers ?

2155

What is the control action?

1147

What is dc current source? Differentiate between ideal and non ideal current sources?

1473

how the aircraft outer body and inner body is separated ?

1068

I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.

2031

. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

3347

Explain the purpose of inductor in an electric circuit?

1134

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