Limiting the current chopping in vacuum circuit breaker

Q.  To limit current chopping in vacuum circuit breakers, the contact material employed should have the properties of
- Published on 17 Nov 15

a. Low conductivity and high vapour pressure.
b. Low conductivity and low vapour pressure.
c. High conductivity and high vapour pressure.
d. High conductivity and low vapour pressure.

ANSWER: Low conductivity and high vapour pressure.

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