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Electrical Engineering Interview Questions

IN star -delta motors normally first operated in star mode {absulated given (r-y-b) phases after one miute change in delta mode in this case i am change phase sequience for example R -PHASE TO CHANGE Y-PHASE ;Y-PHASE TO CHANGE R-PHASE SO THIS TIME MOTOR WILL HAPPEN RUNNIG MODE EIGHTER(OR) STOP MODE(TRIP MODE)

6058

why the air gap is necessary in the transformer core

5812

what is difference b/w squirrel cage rotor and wound rotor

28686

what is the RMU and RMU system in sub-station(11kv,66kv.....)

7076

why only dc is given as excitation...why not ac???

TCS,

4144

what is the difference between capacitive and resistive voltage divider?

2711

what is the transformer

4588

Is there any design in the world a 220 KV transformer without breather …??????

3320

is earthing is necessary if we use armoured cable

4407

how do we select a copper power cable for a 10 HP, 1440 rpm, 440V, 3 phase AC motor?

10584

How can ignition voltage of light increased with the help of a ballast

2518

Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?

1251

what are the changes made in induction motor so that it act as induction generator

4966

what is the function of bearing in dc mchine" and where it is placed

1919

make control wire diagram of start and stop a function with a single push button

Sona,

3087

Un-Answered Questions { Electrical Engineering }

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

1480

how to calculate energy of 3-phase motor?

1380

what is ground fault in ACB?

1475

for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv

816

State angle criterion.

494

Can we Co-ordinate relay in Load Break switch?

1288

How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

1555

What is difference between Sample test and Routine test in safety standard?

1065

How do ACB are maintenance, what are the problem occurred in ACB

1061

whate is the meaning of balance/unbalance,in stabilizers type

1479

what is different between phase and netural

1338

Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?

1476

There are a trformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

447

earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?

1221

what are the applications of TIG welding

995