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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why induction motor can not be operated at synchronous speed?? what would happen if it is operated at synchronous speed??

5 25700

can we coorect P.F. OF 320 KVA ALTERNATOR AT LOCAL SITE WITH RATED .8 PF LAGGING.

1 3401

sir, i want to know the calculation for find rated current for cable sizes.(both copper & aluminium) with examole. please sir for example: 35sq.mm al.cable is withstands for how many amps? is suitable for 45kw motor?

L&T,

5 12831

what can be the causes of capacitor start motor having a higher current that its actual

1967

How to calculate per unit impedance of transformer?

2201

Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?

5 7349

what is meant by phase transformation ratio in induction motors?

2 15226

why generator one end side star neutral point given? if this point not given what happen?

1 4066

what happen if turbine trip ,g.c.b not open and excitation on condition?

1 5201

what happen if steam turbine trip,g.c.b not open and excitation off and on condition?

1 4290

why capacitor is not discharged phase to body

1 3533

Why the electron flow in reverse of current.

6 9554

What is the function of an Auto reclosure relay. How does it work??

KSEB,

4 18416

What is EHT tariff or Power factor Tariff ????

KSEB,

2340

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

SISL,

1979


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

I want to make street light with solar system ... What may I do for procedure and how much of estimation for each material ... If any one knows guide me and inform this id : aravindd7@gmail.com

1838


whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

1600


what is lrs tank water resistance.

2544


how to design coil turns ?

1978


Why the efficiency of generator is more than motor in swinburne's test

2022


Pl. share your experience about industrial-electronics repair of machine tool.

1890


what is negative and zero impedance in 3 phase induction motor ??

2177


What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

1347


What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

1666


If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????

1864


Why the moulded plug comes with domestic appliances instead of assembled plug like anchor, Vinay 5/15 A.

2030


Difference between earthing & grounding.?

2161


how to find out cable size if load is 2800 watts, 230 volts AC supply and load distance is 1800 meters

1608


What is stepper motor. What is its uses?

1265


Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

1733