Q286
Thermocouple consists of
A.
Two dissimilar metals
AnswerB.
Two similar metals
C.
Metal and a semiconductor
D.
Metal and an insulator
Answer: Option A
Solution
Answer: Option A
Solution:
A thermocouple consists of two dissimilar metals, joined together at one end. When the junction of the two metals is cooled or heated a voltage is produced that can be correlated back to the temperature. Most thermocouple alloys are commonly available as wire.