Answer / manasa

> slip rings are segments which is made of hard drawn
copper and carbon brushes collect the emf from the copper
segments.
> carbon brushes are used both AC and DC machines but slip
rngs are used only AC machine.
> in DC MACHINE split rings are used.t is also called
commutator(combination of split rings)

Answer / k.prakashchandra

In generators ,slip ring is a thick metal ring fixed to
rotating shaft duly insulated from it, to evacuate
electrical power or to receive dc supply for field
excitation ,when it is called 'collector ring'.In motor it
is used for starting and speed control ,being connected to
variable resistance box.The connection between the slip ring
and the cable is established with the help of carbon brush
which is housed in brush holder.

thyristor controlled APFC panel design parameter?

0 Answers  

---

in 3 phase (4 wire) star connection - is current pass through neutral??

7 Answers  

---

What is the difference between Dielectric and Insulator

9 Answers  

---

enlist types of dc generator

8 Answers   Philips,

---

what is the HT motor current setting (Motor protection relay)aganist FLA If the capacitor is connected in parallal to the motor to increase the P.F from 0.89 to 0.99. the setting is to be reduced. what is the formula for to calculate the current.(FLA - CALCULATED CURRENT!= )

1 Answers  

---

I am new guy as an electrical engr. in a 100MW HFO based power project. I am in operations division. I have noticed from last few days, my supervisor sends the last 24 hours energy generation calculation to my plant manager. I have noticed, he calculated last 24 hour's generated energy differences in KWH then he multiplied it with a multiplying factor 960. for example: total difference =2.685 KWH*960= 2577.6 MWH. but he does not not know what is multiplying factor 960?? can anybody explain it??

1 Answers   Orion,

---

can some one clearly explain why -48 volt DC use in telecom site????

0 Answers  

---

Why we use Carbon & graphite mixxed brushes in the DC motor?

6 Answers  

---

i am confused about generator. i have generator of 380 KVA that is 304 KW by that formula KW=KVA*0.8... then by this formula I=KW/V*1.732*0.8 the amperes are 528.673. so that is the load which i put on one phase of generator or this is total 3 phase load on Generator.......

3 Answers   Haliburton,

---

list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

0 Answers  

---

If I have a motor of 1MW with 6.6kv, running at 35% load, how can i save energy without reducing the load ?

2 Answers   Reddy Labs,

---

what is hunting?

2 Answers  

---