Which of the following is NOT the reason behind selecting marble for making ‘formers’for inductance coils?
A. It is comparatively cheap.
B. It can be easily machined.
C. It has a very small co-efficient of thermal expansion.
D. It is a non-magnetic material.
Answer:C
Which of the following is NOT the reason behind selecting marble for making ‘formers’for inductance coils?
A. It is comparatively cheap. B. It can be easily machined. C. It has a very small co-efficient of thermal expansion. D. It is a non-magnetic material.