Answer / r k k bhagavan

potentiometer is three terminal resistor with a sliding
contact, that provides adjustable voltage by varying the
contact it is used to measure the potential in the circuit.

rheostat is one type of potentiometer but it has two
terminals instead of three terminals these are wildly used
in industries for controlling the motors

Answer / nvidia

rheostat is used to control the "current" and potentiometer
is used as "voltage divider"

Answer / thamil

potentiometer: when a resistor is used for voltage drop
purpose, then it called potentiometer.

rheostat: a resistor with sliding contact used for current
can be varied, then it called rheostat

meaning of two lines in between the transformer single line diagram??

3 Answers  

---

why the energy meter disc rotates anticlockwise while reading

1 Answers   KSEB,

---

why mosquito bat makes noise when it hits with a insect?

2 Answers  

---

what is difference between power transformer and distribution transformers

1 Answers  

---

What is the difference between RCD & RCCB, Where it can be used

3 Answers  

---

is it necessarry to charge the battery of ups always??

3 Answers  

---

what is active network?

2 Answers  

---

What are types of HT Motors.

1 Answers  

---

Which formation is better in transmission lines - horizontal or triangular and why ?

2 Answers  

---

Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

0 Answers   APTransco,

---

If i want to build 230kv substation what are the equipments to be installed?

7 Answers  

---

what factors to needed while selecting a MCB and MCCB

3 Answers  

---