1.

The reliability index of the power system is expressed in which of the following forms?

A. [(Total hours – Interruption hours)/Total hours] per year
B. [Total hours/Interruption hours] per year
C. [Interruption hours/ Total hours] per year
D. [(Total hours + Interruption hours)/Total hours] per year
Answer» B. [Total hours/Interruption hours] per year


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