Question

Nichrome and manganin are the common alloys used for the making of heating elements because :

• A. They have high melting point
• B. Low thermal expansion
• C. Have good resistivitiy
• D. They undergo oxidation at room temperature

Answer 1

Answer: (A), (B), (C)

The correct options are
A They have high melting point
B Low thermal expansion
C Have good resistivitiy

Alloys like Nichrome and manganin are used for making of heating elements because they have high melting point, low thermal expansion and have good resistivity.