Question #$4(15$ Marks$)$

A precedence diagram outlines the sequence of tasks in a project. By considering a manufacturing industry in Oman, you are required to indicate$/$list assembly tasks for the device and analyse the following. Table Q$4$ could be used to fill in the required data. $($Note: Data source must be cited$).$

Table Q$4$

$\backslash$table$[[$Task$,$Description,$\backslash$table$[[$Performance$],[$Time $($min$.)]],\backslash$table$[[$Predecess$],[$or$($s$)]]],[,,,],[,,,]]$

$4$

$\backslash$table$[[,,,],[,,,],[,,,],[,,,],[,,,],[,,,]]$

a$.$ Draw the precedence diagram for this production process.

$[3$ marks$]$

b$.$ Using the longest task time heuristic, group the tasks into the minimum number of workstations.

$[3$ marks$]$

c$.$ Determine the desired cycle time for this assembly operation?

$[3$ marks$]$

d$.$ Determine the theoretical minimum number of workstations.

$[3$ marks$]$

e$.$ Determine the efficiency of the line and how this could be further improved.

$[3$ marks$]$