QUESTION $58$

An HR department processes job applications using $7$ stages with the following task times $($see below$).$

Stage $1$:$7$ minutes

Stage $2$: $11$ minutes

Stage $3$: $5$ minutes

Stage $4$: $5$ minutes

Stage $5$: $3$ minutes

Stage $6$: $7$ minute

Stage $7$: $6$ minutes

What is the idle time of the operation?

A$.11$ minutes

B$.44$ minutes

C$.3$ minutes

D$.33$ minutes

E$.8$ minutes In a typical $7-$day period, the operations team programs a machine to work for $100$ hours. Changeovers and set$-$ups take $4$ hours and breakdowns average $3$ hours each week, respectively. Waiting for materials to be delivered constitutes three hours in which the machine is not working. The machine also has $2$ hours a week without any work scheduled. When the machine is running, it averages $96\%$ rated speed. After production, $1\mathrm{.}1\%$ of the parts processed are found to be defective. What is the operating equipment effectiveness?