Electrical Engineering Interview Questions

what is d main difference between KVA and KWA

14719

which type of insulation are used on 132kv transmission line

13587

which relay is used on long transmission lines

29535

while calculating demand in my company the present load in kw is 212.... there 125kvar capacitor bank is installed by spliting as 50 in departments...the diasplay in panek biard shows 175kw... how could we know the amount of kvar used to compensate the kva

2447

sent to a site and asked to explain how you would like a twenty seven flour building should be supplied with lighting and sockets plus a water boiler.

1461

why DC source is used to idetify the polarity of CT/PT?

3170

what is corona ?

4472

what is the max. acceptable leakage current in 33kv bus bar

2468

does the power factor of an induction motor improve upon used in parallel with a synchronous condenser , used commonly to provide a leading kva ?

2528

can a synchronous motor be made to rotate in a clockwise direction ?

3137

why stator winding of synchronous machine are connected in star connection ?

15324

what are the protection relays for trasformer

5583

size of condotory fron voltage level

1681

How much allowable difference current between on three phases Dear sir, We have a 1870 KW HT motor, 11 Kv supply,FLA-120A,2870 rpm,2-pole squirrel cage induction Motor.And stator is connected in star connection with Liquid resistance stater to limit the starting current.It has coupled with Centrifugal air compressor.My question is it is loading 73% of FLA taking R-phase 86.7 A, Y-phase-85.4A,B-phase- 78.3A.why the B phase current is that much of difference.Is it allowable, or any one tell me how much allowable current.If any method to calculate.

5008

What will happen if the rotor of an induction motor is fed from a 3 phase supply and the stator short circuited ?

20552

Un-Answered Questions { Electrical Engineering }

full form of electrical?

2256

what is through fault?

1721

what is the use of permanent magnet generator in exciter

1658

What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

1443

State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp

1433

what is the role of transistor in Circuit?

636

what is the terminal voltage of dc series generator running at rated speed at no load?

6296

Where servomechanism is used?

610

explain all the classes with example

1451

What are the disadvantages of autotransformer?

621

What do you mean by an instrument transformer?

621

where lt & ht capacitor used

1721

state working of halogen lamp?

1327

take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????

1774

How one may guess the direction from which the distribution line is incoming if there is no pole plate on poles?

1629