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The temperature variation of the resistivity of four materials are shown in the following graphs.
The material that would make the most sensitive temperature sensor, when used at temperatures between T1 and T2, is
The material that would make the most sensitive temperature sensor, when used at temperatures between T1 and T2, is
- a)A
- b)B
- c)C
- d)D
Correct answer is option 'C'. Can you explain this answer?
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The temperature variation of the resistivity of four materials are sho...
CONCEPT:
Temperature Sensors: Temperature sensors are measurement devices that determine temperature by sensing a corresponding physical characteristic, such as electrical resistance, electromagnetic field (EMF), or thermal radiation. The way a temperature sensor works depends upon the physical property that is measured. Sensor options include:
Thermocouples
Resistance temperature detectors (RTDs)
Thermistors
Bimetal switches
Noncontact infrared temperature sensors
→ For the temperature sensor, the variation in the resistivity of the material should be as large as possible without any local maximum or minimum.
Resistance temperature detectors (RTDs)
Thermistors
Bimetal switches
Noncontact infrared temperature sensors
→ For the temperature sensor, the variation in the resistivity of the material should be as large as possible without any local maximum or minimum.
EXPLANATION:
For the temperature sensor, the variation in the resistivity of the material should be as large as possible without any local maximum or minimum.
Option (A) shows minimum
Option (D) shows a minimum and a maximum with a very slightly varying gradient.
Option (B)'s gradient is very low in comparison to (C).
Thus option (C) is the option where all of the conditions are correctly checked.
Hence the correct answer is option C.
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The temperature variation of the resistivity of four materials are shown in the following graphs.The material that would make the most sensitive temperature sensor, when used at temperatures between T1and T2, isa)Ab)Bc)Cd)DCorrect answer is option 'C'. Can you explain this answer?
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