Electrical contact materials used in switches, brushes, relay must possess
A. High thermal conductivity and high melting point
B. Low thermal conductivity and low melting pointL
C. High thermal conductivity and low melting point
D. Low thermal conductivity and high melting point
Answer: Option A
Related Questions on Materials and Components
For making a capacitor it is better to have a dielectric having
A. High permittivity
B. Low permittivity
C. Permittivity same as that of air
D. Permittivity which is neither high nor low
As the viscosity of a liquid increases, the relaxation time
A. Remains constant
B. Increases
C. Decreases
D. First decreases then increases
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