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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

The earth pin of some three pin plugs are seen split. why?

1 2866

we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.

1253

what is the difference between id fans and fd fans

Perkins Thermal Systems,

12 148188

if u have to run a 300kw moter then what is ur choice HT or LT switchgear & explain why?

Aditya Birla,

3 5661

Why one side of secondary of transformer is earthed, to supply single conductor of electric traction system?

1 2781

What is the meaning of electricity? How it is being produced? Can we store the electricity? When we produce electricity what is the capacity of voltage current we are getting? If we need 440 volts how to get it? In case, if we want lower than 440 volts how to change it? Please answer?

1 3183

How voltage regulation is calculated for over head transmission line? What do we mean by Conductor constant while calculating voltage regulation? how it is differ for for diffrent type of conductor say AAAC DOG & AAAC RACOON conductor?

ABB, AES,

3 18539

what is control supply rating of a machine

1138

please send previous exams question papers

1032

why the indian frequency is 50 hz & U.S.Frequency of 60 hz

3 4674

How to do stting of vl250 siemens MCCB

Qatar Steel,

2073

Difference between shunt, PMG and AREP excitation. Which is the most reliable between PMG and AREP.

ABB,

8304

Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.

1236

what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?

4229

What do you mean by boost voltage in case of battery charger?

MahaGenco,

3 26395


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Un-Answered Questions { Electrical Engineering }

why on delay timer used for fully automatic star delta starter?

852


what is the purpose of high speed earth switch in gas insulated substat

2125


why the check zone and main zone are used for Busbar Protn. scheem?

1250


Classify driling machines.

258


what is die electric strnth of transformer ?

1236






Is Transol transformer oil comparable to nynas nytro libra?

2191


Define thermal resistance in the context of power amplifier.

237


full form of flry b

3053


Why the symbol of register is "zig zag"

653


Block diagram of Power line communication?

1497


what causes contact chatter when there is no demand on the air conditioning unit?

1231


is it possible for different brand of H.V transformers to run or operate in parallel to each other? if so how much disturbance can this affact the H.V bus bar?

1276


Is there any specialised book to refer about fault level calculation both in MV and LV side??

1242


In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.

1120


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

1274