Answer Posted / harshit shukla
-harmonics are unwanted frequencies which distort current and
voltage wave forms and also increase I2R losses in line.
-In transmission line harmonics are produced due to transient
effect.They are also produced during switching ON and OFF of
transformer(magnetic coupling device)
-It is also noticed that in line when current peak and
harmonic peak occur at the same time,I2R loss become maximun.
-harmonics can be reduced by mounting filters near
transformers or generators.
-In power electronics devices it causes fluctuation.
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
sir, iam a electrical engg graduate and i want to go in automation sector and for this i have decided to do industrial training for this,plz suggest me some good institute for the same in delhi,ncr. my degree percentage is 58%, can i get job after doing training, plz help....
15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help
why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?
Why a Permanent Magnet Generator has higher frequency as compared to frequency of main alternator?
what are the effects when a salient pole alternator is run at high speed like 3000 r.p.m?
Why line VTG = √3 phase VTG in star? How?
What is the polarization index value ? (Pi value)and simple definition of polarization index ?
For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation
What is minimum phase system?
sir plz send some previous year questions of jspl.
what is the use of the circle diagram
Do u know any one? how to find out in motor rated amps? formula?
What is the difference between hot and cold loop testing?
what types of electrical & mechanical test conducted in switchyard?
What is the difference between voltages or potential difference? And what are they?