Answer / thowsif_emerson

A potentiometer is a three-terminal resistor with a sliding
contact that forms an adjustable voltage divider.[1] If
only two terminals are used (one side and the wiper), it
acts as a variable resistor or Rheostat. Potentiometers are
commonly used to control electrical devices such as a
volume control of a radio.


For more information log on to:-
http://en.wikipedia.org/wiki/Potentiometer

pls give proper discription of selection of transformer based on particular load.

1 Answers  

---

what happened when we supply a dc current in dc motor?? can it worked properly?

0 Answers  

---

Can someone help me in the Below Quest on Earthing 1.Types of Earthing and Recommended for what use 2.What is the Pit value /Panel N -E value should be or within limit for RP and UPS .

1 Answers  

---

In any plant or substation main incommer voltage RY - 415 V,YB - 400 V, BR - 387 V(in commer feed from transformer 11 Kv /0.415 KV) why found voltage differance in each phase? plant have not self power plant it is depend on outsource grid

2 Answers  

---

What is harmonics in AC waves. How it is generated? How it will effect the system network? how can eliminate it?

2 Answers  

---

What are the reasons for the parallel operation of transformers?

0 Answers  

---

why voltage is low at reciving end in summer??

4 Answers   JSW,

---

What are the transformer losses?

0 Answers  

---

Explain the working of variable frequency transformer?

0 Answers  

---

What is the different type of class in CTS and why it is required

2 Answers  

---

Capacitor bank require for 1000amp load

2 Answers   Biodeal, Pharmaceutical,

---

what exactly commisioning work does in electrical site work... LT side?..

0 Answers  

---