IndiaBIX

Electrical Engineering - Voltage, Current and Resistance - Discussion

Discussion Forum : Voltage, Current and Resistance - General Questions (Q.No. 11)
Voltage, Current and Resistance
11.
A two-terminal variable resistor is known as a
potentiometer
thermistor
rheostat
wiper
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
28 comments Page 1 of 3.
Shilpa.S said:   6 years ago
A potentio meter has 3 pins. Two terminals (the blue and green) are connected to a resistive element and the 3rd terminal (black one) is connected to an adjustable wiper. The potentio meter can work as a rheostat (variable resistor) or a voltage divider.
(2)
Geeta Patil said:   10 years ago
Potentiometer (IEEE): Adjustable resistor has 3 terminals.

Variable Resistor/Rheostat (IEEE): Adjustable resistor has 2 terminals.

Thermistor - Thermal resistor: Change resistance when temperature changes.

Photoresistor/Light dependent resistor (LDR): Changes resistance according to light.
(2)
Satish said:   5 years ago
The answer should be a thermistor. Except this, all are three-terminal devices.
(1)
Ponjothilakshmi said:   9 years ago
Wiper is a sliding contact. Think of the meter bridge experiment where we use jockey, similarly wiper.
(1)
Santu said:   1 decade ago
In potentiometer we use a slide resistance, so I think that is a wiper.
(1)
Shrikant said:   1 decade ago
Please any one tell me difference between rheostat and thermistor.
Saurav Chhetry said:   5 years ago
Rheostat have two fixed terminal and one movable terminal all together three terminal but only two terminals are used. Only one of those two fixed terminals and another movable terminal are used.
Shivaraju said:   7 years ago
How to work potentiometer?
M. junaid said:   8 years ago
Wiper is sliding contact on potentiometer.
Parth said:   8 years ago
Wiper is one type of variable resistance, which have three terminal and one nobe to varies the resistance.
Post your comments here:

Your comments will be displayed after verification.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers