QUESTION $5$

$[$TOTAL MARKS: $25]$

Q $5($a$)$

$[4$ Marks$]$

Explain the difference between indexing machines and free transfer machines.

Q $5($b$)$

$[5$ Marks$]$

What are the factors one should consider when choosing an indexing machine?

Q $5($c$)$

$[4$ Marks$]$

Explain the terms operator pacing and machine pacing in automated assembly.

Q $5($d$)$

$[6$ Marks$]$

Derive an expression for proportion of downtime on an indexing machine in terms of

the cycle time $t,$ the repair time $T,$ the number of workstations $n,$ the average

percentage defective parts $x$ and the ratio $m$ of defective parts that cause machine

stoppage.

Q $5($e$)$

$[6$ Marks$]$

What is the average production rate for the system described in Q$5$d$?$