Subject: pruduction and operations analysis$/$operations management

a Electric is to be produced on a single$-$model assembly line. The work content of assembling the

product has been reduced to the work elements listed in Table. The table also lists the times for each

element and the precedence order in which they must be performed. Assuming the cycle time $=1,$ apply the

ranked positional weights method to determine the assigned stations.

No$.$ Work Element Description Time $($minutes$)$ Immediate Predecessors

$1$ Place frame in work holder and clamp $0\mathrm{.}2-$

$2$ Assemble plug, grommet to power cord $0\mathrm{.}4-$

$3$ Assemble brackets to frame $0\mathrm{.}71$

$4$ Wire power cord to motor $0\mathrm{.}11,2$

$5$ Wire power cord to switch $0\mathrm{.}32$

$6$ Assemble mechanism plate to bracket $0\mathrm{.}113$

$7$ Assemble blade to bracket $0\mathrm{.}323$

$8$ Assemble motor to brackets $0\mathrm{.}63,4$

$9$ Align blade and attach to motor $0\mathrm{.}276,7,8$

$10$ Assemble switch to motor bracket $0\mathrm{.}385,8$

$11$ Attach cover, inspect, and test $0\mathrm{.}59,10$

$12$ Place in tote pan for packing $0\mathrm{.}1211$