what are effects of harmonics in the three phase a.c power
system ?
- 2 Answers
- 4931 Views
- AIIMS, I also Faced
- E-Mail Answers
Answer Posted / suresh apgenco
heating of system, life of system reduces, un equal voltage
distribution in case of transformers
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
How earthing/grounding done in aeroplanes and ships.
sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan
What is 11 N1 and 12 N2 in single phase Transformer ?
WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC
how does grading rings & spacers in transmission line works? Working Principle?
Can any body tell me about INNER SHUNT COMPOUND MOTOR diagram?
Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
Why is voltage is required to be within permissible range for an electrical equipment?
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason
describe the Tranformer testing procedure
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve
If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021
stand by earth fault protection (51G) for transformer rating 2000 kVA,Dyn11,33/0.400 V. LV NCT ratio and necessary resistor and metrosil values how to calculate
