What is Harmonics & what are its efect & which harmonic is
dangerous
Answer Posted / abdul wajid
Harmonics is the sudden increase in the system voltage it
is caused by addition of unwanted frequencies to the
sinusiodal waveform of ac system . 3rd harmonics is
dangerous
| Is This Answer Correct ? | 9 Yes | 1 No |
Post New Answer View All Answers
how cables go in and come out for distribution from the feeder pillar box?
What is the formula to calculate the size of Aluminium and copper cable?
Define resonant frequency?
Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?
For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?
What are the different types of transformers?
how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable
what is the cause of voltage dipp or swell in the transmission lines?
Why is remote backup preferred to local backup?
when will be the iocl interview results ifaced the interview on september 8 th
what is JE exam?
How to calculate Air conditioning capacity for a telecom BTS shelter?
What is the fault or needs to be done when frequency in ac drives is not changing?
why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?
different aspects of voltage stability