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Electrical Engineering Interview Questions

Dear Mr B C pal...Can you plz. put some light on principle of operation of Z-Ct in conjunction to its use with 1Cx1000Sqmm HT Cables & Directional Ground Fault / Over Voltage Relays...Regd..Parag v K 9899115632

1724

Explain about 3 phase motor fault current calculation with examples?

QTC,

1939

Initially motor starts with star connection ,after few timing changes to delta connection, why the motor should run continously in star connection,it gives high torque & low current?

7162

what is effect of reverse c.t connection on metering.

11153

What are the advantages of D.O.L Starter in 3 phase induction motor?

6449

while running ,synchronous generator is being turned off.what will happen to the current flow??

1238

What happen if field ckt is open when a sailent pole alternator connected to infinite bus

4203

without name plate detail of blower how we can find out the HP & Rpm ? the input voltage is 230v single phase

2766

What should be distance required in between two phase of HT cionductors in open area??????

7693

For a DY11 lighting Transformer on primary side whee to connect fourth lead? from nuetral or from ground?

3816

what heppend if we are connected u1-v1-w1 as a star point in the place of u2-v2-w2 in power genration

1277

Dear sir, By which formula u can calculate for a particular kv line there is a range of mw.

1216

R u say ,that is there is any flux in your room.

3277

In which connection the voltage will be more , in star or delta connected motor?

4537

why we do occ & scc test in transformer ?how we can do it ?

9469

Un-Answered Questions { Electrical Engineering }

11 kg trivevter meter has rating of -/5amps. And pt ratio11000/110v and is connected with 11kv ct/pt unit of cr ratio 75/5amps. And pt ratio of 11000/110v while checking accuracy of meter with HT Accuchek meter what value of PT ratio and CT ratio to be filled in Accuchek meter

503

i am studying in final year can i allowed for 23rd UES of Indian army

1177

Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

182

How to operate a ac chilar plant?

1486

why we can stote dc? why we cant store ac?

1142

WRITEDOWN FEW RELY CODES

1280

1sq mm dc powr cable can carry how much dc currnt

986

what is meant by twilight switches 7 where its applicable ?

971

why ht cable end termination don't have a gland?

827

what are the condition that makes hooter blow?

1343

In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?

2189

After completing iti in electrician, how can i get certificate of electrical supervisor? What ia requirements. For it?

746

how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?

2748

hello friends..... any one have papers or any study materials?sail ,hpcl...?

967

How to select a contactor? How many types of contactors are available

2272