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eddy current losses depends on?(a-max magnetic feild,b-avg
magnetic feild,c-on frequency,d-on square of frequency)?
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Why negative feedback is preferred in the control system?
How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?
could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?
Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
in dc suppy frequency is zero why? if dc frequency is zero how to exist dc transients and ac transients
H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....
hello friends..... any one have papers or any study materials?sail ,hpcl...?
IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?
how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???
Why neutral cable carry current.
upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.
how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.
Where is servomechanism used?
