An Assembly Line to Be Balanced Has Six Tasks in Precedence.The

question 36

Multiple Choice

An assembly line to be balanced has six tasks in precedence.The task times are shown in the following table.Based on demand forecasts,the output rate has to be 160 units per day.The line operates 8 hours a day.Calculate the desired cycle time C.
$$\begin{array} { | l | l | l | } \hline \text { Tasks } & \text { lmmediate Predecessor } & \text { Task Time in Minutes } \\\\\hline \text { A } & \text { NONE } & 3 \\\hline \text { B } & \text { A } & 1 \\\hline \text { C } & \text { A } & 2 \\\hline \text { D } & \mathrm { B } , \mathrm { C } & 3 \\\hline \text { E } & \mathrm { C } & 3 \\\hline \text { F } & \mathrm { D } , \mathrm { E } & 2 \\\hline\end{array}$$

• A)3 minutes/unit
• B)4 minutes/unit
• C)5 minutes/unit
• D)6 minutes/unit

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Definitions:

Excitation-Contraction

A biological mechanism that describes the process of muscle fiber contraction triggered by electrical impulses.

T Tubules

Tube-like structures in muscle cells that play a role in transmitting electrical impulses from the cell surface to the interior, triggering muscle contraction.

Sarcolemma

The fine transparent tubular sheath which envelops the fibers of skeletal muscles.

Sarcoplasmic Reticulum

A specialized type of endoplasmic reticulum in muscle cells that stores and releases calcium ions.