Answer / guest

integral multiplication of the fundamental frequency is
called as harmonics,the harmonic current has the same value
of with different frequencies like 3rd harmonics has
150hz,and 5th has 250hz

Answer / mahmoud aboelfadel

harmonics is multiplication of fundamental frequency and it must be odd number 3th 5th 7th and the biggest value is the 3th and most dangerous . the cause of harmonics is the load
like (sami conductor materiel, rectifier circuit, welding
machine, any machine work with electromagnetic field)
and this harmonics make distortion in current wave which know with total harmonics distortion(THD)

skewing is a slop line in motor rotor surface make during motor rotor manufacture to avoid harmonice.

Can i connect all earth pits in ring system..., And wat IS 3043 says...please help me

1 Answers  

---

what is the difference b/w absolute encoder and incremental encoder?

0 Answers  

---

the process cynide is used for?

2 Answers   MAHINDRA,

---

Which is is best option for 33 kv line incomer.I am Desinging the panel for new projects and i would like to get Your opinion on this Vcb or sf6. Please help me with your replies. Thanks D p singh

6 Answers  

---

what is meant by motor startup supervision & motor load jam protection ?

0 Answers   ABB,

---

why open-delta core of 11kv Potential Transformer is 11000v/1.732/110/3?

1 Answers  

---

what is the difference between c power and U power acb breaker

0 Answers   Radisson Blu,

---

What is the ratio of true power to apparent power in an ac circuit?

0 Answers  

---

what is the harmonics.

3 Answers   DLF,

---

Can a generator rated 400 V, 60 Hz be used in a 50 Hz System? Yes or No ? Why ?

1 Answers   VECL,

---

if a 3phase motor runnig in star delta starter with full load of its,and its rated 15 amps.now we conneted over load thermal relay at its main contactor,here what will be our amps sittings?

3 Answers  

---

WHAT IS M.P.C.B

3 Answers  

---