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Electrical Engineering Interview Questions

Is corona effect occurs in Induction motor. pl. justify the answer.

KPS,

6961

Why consumers are charged based on Kwh basis why not on Kvah basis.

8011

One Township having 850 house and each house load is 2.2KW single phase & 5HP 3 Phase motors of 10 Nos .Who can calculate 11 KV transformer capacity .dilip_bhasker@yahoo.co.in

3413

What must the distance between two MV cables be when they are laid on tray?

1501

What should be the amps for a MV fuses for transformer 630kVA 20(10)/0.4 kV

1363

WHY IS HV WINDING OF A TRANSFRMER SECTIONALIZED???

4756

Explain Active power,reactive power,how its related to each other , & inductive ,capacitive.

1287

what happens when power factor leads or lags to electical or home appliances

4937

any one can explain the stages of a knee point which is taken during ct magnetising curve.

1158

what is V=4.44FBN, THIS 4.44 ONLY U GOT the voltage in term sof 11, 22 etc this 4.44 u will get from form factor which has a value of 1.11

2139

sir, is there any ratio,this much of A.C volt is equal to D.C voltage

4073

what is die electric strnth of transformer ?

1438

1)we have 1000 cfm Blower,Dia-1Mtr,Velocity of air 94 m/s 2)We have Natural Air velocity 94m/s 3If i Put Wind Mill in natural air ,speed is 94m/s Then it will generate Assume 100kw 4)If i put same wind mill across the Blower,air speed is same 94m/s now the Question is Will it generate 100 kw?

1354

working principle of induction motor is similar to transformer. but what makes it to rotate? then why the transformer doesnt?

10220

the input mechanical power of a single alternator is increased,its RPM increased but in case of an alternator synchronised with grid its RPM does not increased with increase of input mechanical power. why?

Bhel,

6758

Un-Answered Questions { Electrical Engineering }

What are the different types of dams?

488

what is arc flash and what are the hazards involved

1463

PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

1623

In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

485

hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.

1374

How to design pavement quality concrete by using C.R.C.P Method

1106

Explain few advantages of electric traction system?

423

how to work droop ct in generating station

1888

How to Make relay co ordination chart for a Electrical power distribution of a plant

3078

Why we specify TNC switch with 1NO 1NC ,2NO 2NC ? how we get connection.?

1084

A parallel flow heat exchanger will perform better than a counter flow heat exchanger. State if the statement is true or false.

546

our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

1495

For the requirement of a furnace of temperature range up to 1200 oC using silicon carbide rods, What is the required rate of transformer needed (please do it with all details)?

1359

can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

783

If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1308