Q197
Constantan an alloy used in thermocouples is an alloy of
A.
Copper and tin
B.
Copper and zinc
C.
Copper and iron
D.
Copper and nickel
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
a copper–nickel alloy used in electrical work for its high resistance. It usually consists of 55% copper and 45% nickel