Answer / amritpal singh sidhu

AC is differ from DC as per given below:
1. In AC transformer can be used but in DC we can't use
transformer.
2. In AC can't be stored but DC can be.
3. In AC there is skin effect but in DC there is no skin
effect.
4. There is revolving field in 3-phase AC machines but
there is no revolving field in DC machines.
5. AC switch gears are cheap,robust,easily maintence but DC
switch gears are not.

Answer / t lakshmi narayana

If DC Voltage(=5v) is applied for a resistor 'R' Heat is
produced.
For same resistor 'R' and same amount of heat an AC voltage
applied is more.

DC = RMS Value * AC

what is the frequency of direct current(dc)?

12 Answers   Cognizant, University,

---

How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....

0 Answers  

---

In an alternator running with a balanced zero p.f. lagging load, phase differernc between the resultant armature flux and main field flux is always____? options is 180 degree....why?? explain.

1 Answers   BREB,

---

WHAT IS MEANT BY OVER EXCITATION IN GENERATOR TRANSFORMERS? DESCRIBE IT.

0 Answers  

---

What is the effect of pd controller on system performance?

0 Answers  

---

---

What is ELR, and where it is used ?

7 Answers   KSEB,

---

installation of subsatation of33kv

0 Answers  

---

what is non uniform load

1 Answers  

---

Why the magneti fields are not passes from southpole to north pole

0 Answers   SGML,

---

why bulbs when connected in series glow dim

4 Answers  

---

do we use neutral grounding for resistive balanced load? if we use what happen?

0 Answers   NFC,

---

what is the difference between droop mode and ischnorous mode in thermal powerplant?

0 Answers   GVK, Thermax,

---