Electrical Engineering Interview Questions

what is the principle of synchronous motors?

4044

4918

What is the application of Nitrogen Injection system in Transformer Protection?

HPL,

5074

what is T P N bus bar

16786

examples of resistive inductive and capacitive load

15111

Explain What will happen when direction of field current is changed (i.e, field excitation is reversed) in the following machines? 1) Alternator 2) Synchronous Motor 3) D.C Generator ( Shunt or Seies ) 4) D.C Motor ( Shunt or Seies )

16254

what is mean by hvdc transmission technology .what is principle of hvdc transmission and technic of hvddc transmission .

3827

what is the prinsiple of dc motor and construction and working ,application of dc motor.

1433

what is the relation between the leading pf and supply voltage?

3515

What is the major differences between RCCB & ELCB? If we use ELCB of less sensitivity why does it trip often and can we control it from tripping?

5230

In ac circuit R,L,C are connected in series what is the output the circuit? explain

4596

string efficient is 100% what is the voltage across the each disk?

2758

( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capacitor current would be kvar x 1000 / (415 x sqrt3). This would be 70a approx. The MCCB selected should have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So you should choose at least 100 A mccb.) regarding to this answer,i would like to know why the current have to times 1.4 to get the right amphere for the mccb.hows the formula to get the 1.4??tq

10750

Shall I use 40A semiconductor Fuses in 32 A SFU ? Frame size is same. What Happen if Fuses burn on SFU?

1497

What is the starting current of a DC Motor?

3512

Un-Answered Questions { Electrical Engineering }

full form of flry b

3505

What is the efficiency during maximum power transfer?

574

The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?

1693

What is the name of transformers oil filteration equipment?

1517

Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

2130

1. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be

1412

please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.

1169

Best way to measure the Soil resistance of rocky soil, three probe method and four probe method

1370

aternator every parts and its working

1094

Which contains in POLE ASSEMBLY of a 11KV Kirloskar-make SF6 (Model No-FP620A12)? Will u clarify with drawing?

1655

What are the disadvantages of thermal power plant?

569

Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm

1603

what are pilot cells

1508

HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.

1584

how to test reverse power trip?

3727