Answer / teja

Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also be through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric charge flows in a constant direction, distinguishing it from alternating current (AC).

In alternating current (AC) the movement of electric charge periodically reverses direction. In direct current (DC), the flow of electric charge is only in one direction.

what is the frequency of direct current(dc)?

12 Answers   Cognizant, University,

---

what is the main different between distribution transformer and power transformer ?

7 Answers   Sail,

---

Without seeing the nameplate descriptions of a rotating machine,Is it possible to say which one is a motor and which one is a generator? How would you certain this?

3 Answers  

---

How would your past experience translate into success in this job?

0 Answers  

---

What do you mean by class of CTs and what is the meaning of cl 1.0, cl5P10, cl 10P10 CTs?

3 Answers  

---

What is thyristor?

13 Answers  

---

we are small scale industry in production of rice & rice bran. Pls let me know how to take contract demand for our industry.. (for information we have total 600.hp)

2 Answers  

---

what factors to needed while selecting a MCB and MCCB

3 Answers  

---

what is ramping rate of generator

0 Answers   Core,

---

why grid failure happens?

1 Answers  

---

can u tell the difference between star-star transformer and delta to delta transformer.

3 Answers   Videocon,

---

hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites

0 Answers  

---