Table 9.18
A company desires to set up a line to produce 60 units per hour.
The work elements and their precedence relationships are as follows.
$$\begin{array} { | c | c | c | }
\begin{array} { c }
\text { Work } \
\text { Element }
\end{array} & \text { Time (sec) } & \begin{array} { c }
\text { Immediate } \
\text { Predecessor(s) }
\end{array} \
\hline 1 & 40 & - - \
2 & 30 & 1 \
3 & 50 & 1 \
4 & 40 & 2 \
5 & 6 & 2 \
6 & 25 & 3 \
7 & 15 & 3 \
8 & 20 & 4,5 \
9 & 18 & 6,7 \
10 & 30 & 8,9 \
\hline
\end{array}$$
-Use the information in Table 9.18.What is the theoretical minimum number of stations versus the number of stations required using the longest work-element time method?
A) 4 versus 6
B) 5 versus 6
C) 4 versus 5
D) 5 versus 5

Question

Table 9.18
A company desires to set up a line to produce 60 units per hour.
The work elements and their precedence relationships are as follows.
 $$\begin{array} { | c | c | c | } 
\begin{array} { c } 
\text { Work } \
\text { Element }
\end{array} & \text { Time (sec) } & \begin{array} { c } 
\text { Immediate } \
\text { Predecessor(s) }
\end{array} \
\hline 1 & 40 & - - \
2 & 30 & 1 \
3 & 50 & 1 \
4 & 40 & 2 \
5 & 6 & 2 \
6 & 25 & 3 \
7 & 15 & 3 \
8 & 20 & 4,5 \
9 & 18 & 6,7 \
10 & 30 & 8,9 \
\hline
\end{array}$$
-Use the information in Table 9.18.What is the theoretical minimum number of stations versus the number of stations required using the longest work-element time method?
A) 4 versus 6
B) 5 versus 6
C) 4 versus 5
D) 5 versus 5

Quizplus · Accepted Answer

The cycle time is 60 seconds (3600 seconds/hour divided by 60 units/hour). The total work time is 274 seconds. The theoretical minimum number of stations is 274/60 = 4.57, rounded up to 5. Using the longest work-element time method, 6 stations are required.

Table 918 a Company Desires to Set Up a Line to to Produce

Table 918
a Company Desires to Set Up a Line to to Produce