Answer / princealekota

Inductor used in DC circuits is for safety purpose. When
inductor is connected on DC circuit storing and decaying is
happend in specific conditions.

when current suddenly increases then inductor produces self
induced emf opposing the current then voltage across L is
-Vemf. and when current becomes stable inductor will not
oppose the current and voltage acreoss the inductor is zero
and act like a normal wire or just shorted since freq in DC
is zero.

so final thing is, inductor will not allow the changes of
current in DC circuits

Answer / prabhu

You almost got the answer. In DC since frequency is zero the
current flow freely. But the main purpose of using
inductance is to restrict the harmonics. In case of
harmonics there is a frequency element playing a role. since
inductive reactance = 2(pi)fL The inductor offers resistance
to this harmonics and thus reduces the harmonics.

Answer / c_elavarasi@yahoo.com

In DC supply,we wont consider freuency,therefore when
frequency is zero,inductive reactance is also zero.then
what is the purpose of connecting inductor to the DC
source. i dont know the exact answer.

difference between brush less & brush excitation in a generator?

1 Answers  

---

what is dc transformer? how it work?

15 Answers  

---

In liquid rotor starter how PH valve should be maintained.

1 Answers  

---

What is technical difference between ELCB & ELMCB?

3 Answers  

---

what is the function of a Master trip relay? why is it used ?

5 Answers   ABB, Nissi Engineering Solution,

---

---

I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

0 Answers  

---

wht is meant by sh6

2 Answers  

---

What is mean A32 B32 C32 D32 in mcb(miniature circuit breaker)

2 Answers  

---

How can I calculate ISF of current transformer?

0 Answers   Cigniti Technologies,

---

For 300MW and over a distance 250 km, what voltage be selected? and no. of circuit?

5 Answers   DPL, NTPC,

---

what is difference b/w bus duct & bus bar.

2 Answers  

---

As a good company employee, can you report your supervisor to the company management if he or she is going against the company interest in his or her actions?

1 Answers   MAHINDRA,

---