(Solution) 11 Stanford Rosenberg Computing Wants To Establish An Assembly Line For Producing A New Product, The Personal Digital Assistant (PDA). | Snapessays.com


(Solution) 11 Stanford Rosenberg Computing wants to establish an assembly line for producing a new product, the Personal Digital Assistant (PDA).


9.11 Stanford Rosenberg Computing wants to establish an

 

assembly line for producing a new product, the Personal Digital

 

Assistant (PDA). The tasks, task times, and immediate predecessors

 

for the tasks are as follows:

 

TASK TIME (sec) IMMEDIATE PREDECESSORS

 

A 12 —

 

B 15 A

 

C 8 A

 

D 5 B, C

 

E 20 D

 

Rosenberg’s goal is to produce 180 PDAs per hour.

 

a) What is the cycle time?

 

b) What is the theoretical minimum for the number of workstations

 

that Rosenberg can achieve in this assembly line?

 

c) Can the theoretical minimum actually be reached when workstations

 

are assigned?

 

 

9.13 Sue Helms Appliances wants to establish an assembly

 

line to manufacture its new product, the Micro Popcorn

 

Popper. The goal is to produce five poppers per hour. The tasks,

 

task times, and immediate predecessors for producing one Micro

 

Popcorn Popper are as follows:

 

TASK TIME(min) IMMEDIATEPREDECESSORS

 

A 10 —

 

B 12 A

 

C 8 A, B

 

D 6 B, C

 

E 6 C

 

F 6 D, E

 

a) What is the theoretical minimum for the smallest number of

 

workstations that Helms can achieve in this assembly line?

 

b) Graph the assembly line and assign workers to workstations.

 

Can you assign them with the theoretical minimum?

 

c) What is the efficiency of your assignment?

 

 

9.15 The following table details the tasks required for

 

Indiana-based Frank Pianki Industries to manufacture a fully

 

portable industrial vacuum cleaner. The times in the table are in

 

minutes. Demand forecasts indicate a need to operate with a cycle

 

time of 10 minutes.

 

ACTIVITY ACTIVITY DESCRIPTION IMMEDIATE PREDECESSORS TIME

 

A Attach wheels to tub — 5

 

B Attach motor to lid — 1.5

 

C Attach battery pack B 3

 

D Attach safety cutoff C 4

 

E Attach filters B 3

 

F Attach lid to tub A, E 2

 

G Assemble attachments — 3

 

H Function test D, F, G 3.5

 

I Final inspection H 2

 

J Packing I 2

 

a) Draw the appropriate precedence diagram for this production

 

line.

 

b) Assign tasks to workstations and determine how much idle

 

time is present each cycle.

 

c) Discuss how this balance could be improved to 100%.

 

d) What is the theoretical minimum number of workstations?

 


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This question was answered on: May 23, 2022

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