Answer / iamdon

The integral multiple frequency components superimposed on
fundamental components is called harmonics.

It is generated due to switching action,power electronics
devies(static compensator,rectifiers) used in power
system,Arc furnace etc...

Due to harmonics
1)Resonance occur between inductive and capacitive parts of
circuit.It is dangerous.
2)Harmonics cause the interference with neighbouring
telecommmunication circuit and computer traffic.
3)Incresed loss in machines=>temp rise=>insulation failure.

Use of filter can solve the harmonics to some extent.

Author:arbelectbit@yahoo.com

Answer / ali

yes

sir, in a industry present pf is 0.54 pf 25hp power is there its want improve 0.9 pf. which suitable capacity capacitor is suitable please inform me.

2 Answers  

---

4.In which type of welding is a pool of molten metal used.....

3 Answers   ISRO, SSC, Vizag Steel,

---

what type circuit breaker is suitable for connecting 1000A load VCb,Mccb?

5 Answers   Gridco,

---

How to take Vector group test of Transformer?

16 Answers   Sunflag Steel, Zuari Cements,

---

What is inverse definite minimum time lag relay? Where is it use?

0 Answers   TATA,

---

in three phase circuit neutral failure what happend in homes

4 Answers  

---

what is the potential difference between line and earth?

11 Answers  

---

How npn and pnp transistor works

0 Answers  

---

what is the responsibility of C license holder in industry?

0 Answers  

---

why anti pumping relay is not given to tripping coil of the breaker? why only to closing coil?

2 Answers   INEL, Siemens,

---

how we can know the rating of transmission line by no. of insulators disk ??????????

3 Answers   NTPC,

---

HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.

0 Answers  

---