A thermistor is a
A. Thermocouple
B. Thermometer
C. Miniature resistance
D. Heat sensitive explosive
Answer: Option C
Solution (By Examveda Team)
A thermistor is a special kind of resistor.Resistors are electronic components that resist the flow of electricity.
A thermistor is unique because its resistance changes depending on its temperature.
Think of it like this: a normal resistor always has the same resistance, no matter how hot or cold it is.
But a thermistor's resistance goes up or down as its temperature changes.
Option A is incorrect because a thermocouple measures temperature using the difference in voltage between two dissimilar metals.
Option B is incorrect because a thermometer usually measures temperature using the expansion of a liquid or metal.
Option C is the correct answer because a thermistor is basically a small resistor that's very sensitive to heat. Its resistance changes noticeably with temperature changes.
Option D is incorrect because thermistors are not explosive. They are passive components.
This Question Belongs to Electronics And Communications Engineering >> Electronic Devices And Circuits
The forbidden energy gap between the valence band and conduction band will be least in case of
A. Metals
B. Semiconductors
C. Insulators
D. All of the above
For a NPN bipolar transistor, what is the main stream of current in the base region?
A. Drift of holes
B. Diffusion of holes
C. Drift of electrons
D. Diffusion of electrons
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
For a P-N diode, the number of minority carriers crossing the junction depends on
A. Forward bias voltage
B. Potential barrier
C. Rate of thermal generation of electron hole pairs
D. None of the above
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