Chapters 14, 15, 16, 17, 19, 20, 21, 27, 28, 11
Chapter 14 Review:
Predetermined Motion Time Systems
14.1 Define predetermined motion time system:
A database of basic motion elements and their associated normal time values,
together with a set of procedures for applying the data to analyze manual tasks
and establish standard times for the tasks.
14.2 What are the steps in applying a predetermined motion time system?
Synthesize the method, Retrieve the normal time values for each motion element,
evaluate the method to make improvements, and apply allowances to
determine the standard time.
14.3 What is the difference between a first-level PMTS and a higher-level PMTS?
First-level PMTS systems are more detailed where higher-level PMTS systems
are very simplified
14.4 What is a motion aggregate in a higher-level PMTS?
A combination of two or more first-level PMTS aggregates.
“reach” and “grasp” to form “get”.
14.5 Compare the advantages of a higher-level PMTS and a first-level PMTS:
First-level PMTS: more accurate, takes more time to set standard, highly
repetitive, only short cycles, basic motions, very detailed, very flexible.
Higher-level PMTS: less accurate, less time to set standard, repetitive or
batch, longer cycle times ok, aggregates of basic motion, less detailed, less
14.6 What is the unit of time used in methods-time measurement?
TMU(time measurement unit): 1 TMU = 0.00001 hr = 0.0006 min = 0.036 sec
14.7 What does the acronym MOST stand for?
Maynard Operation Sequence Technique
14.8 What is the primary focus of MOST in terms of type of work activity?
The movement of objects
14.9 What are the motion aggregates in MOST called?
Activity sequence models.
14.10 What is the difference between General Move and Controlled Move in
General move is free motion where as controlled move is restricted.
controlled move- moving a lever.
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