Answer / dayal varma

universal motor will work in both ac and dc so in dc we
need a commutator

Answer / dileep mishra

universal motor work in both ac and dc so that commutator is
design for this motor. in dc motor commutator is use only
for direction.

Answer / gaurang

commutator is use to facilate the collection of current, so that we can use this electrical energy for our purpose. And commutator reversing the direction of current across one half of the pole and further reverses across another half of the pole so that we can get AC current or voltage.

what kind of motors are used in the winders of coal field?and what are the various methods of it's speed control?

1 Answers   Monnet,

---

what is circuit recombiner and how it is different from circuit breaker

0 Answers  

---

what is the difference between KVAR & KVA ?

11 Answers   Bombay Rayon Fashions, Hyundai, Pricol,

---

what happens in the short circuited secondary transformer,if the resistance of the short circuit is increased gradually?

0 Answers   IIT,

---

State the difference between Three winding transformers and Two winding transformers ? where its used?

8 Answers  

---

Who is the first Bangladeshi Everest climber? Where is his home district?

0 Answers  

---

What is the definition of ohms law?

7 Answers   AZ Engineering, Ecil,

---

Why we Specify Transformer rating 433 V Instead of 415V ?

8 Answers   ABB, ERA, Uddans,

---

iam working in power plant. In hot places tube lights are glowing at the end portion only. what is the reason for that?

0 Answers  

---

what is the difference between brushed alternator ,brushless alternator & permanent alternator ?

1 Answers  

---

Why indian power system in 11kv,22kv,33kv,66kv,110kv,220kv ? 2) Why ups required dedicated earth?

8 Answers   Energia, L&T, Sail,

---

What are the types of power in electrical power?

0 Answers  

---