In a vacuum circuit breaker, the vacuum is of the order of
A. 10 mm Hg
B. 10-2 mm Hg
C. 10-6 mm Hg
D. 10-9 mm Hg
Answer:D
In a vacuum circuit breaker, the vacuum is of the order of
A. 10 mm Hg B. 10-2 mm Hg C. 10-6 mm Hg D. 10-9 mm Hg