Question

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 work-stations that Rosenberg can achieve in this assembly line?
c. What is the idle time?

Answer 1

Answer:

Explanation:

a. cycle time = Total time available/ production rate required

cycle time = (60*60)/180 = 3600/180 = 20sec per unit

b. theoretical minimum for the number of work-stations that Rosenberg can achieve in this assembly line.

Total task time = 12+15+8+5+20 = 60

theoretical minimum for the number of work-stations = Total task time/cycle time

theoretical minimum for the number of work-stations = 60/20 = 3stations

c. idle time

standard hour for the job is calculated as

standard hours allowed for actual production = unit produced * labor time required

The question does not contain the required information to solve it. Information such standard hours is not given.