OPM FINAL EXAM QUESTIONS AND ANSWERS | COMPLETE STUDY GUIDE &
PRACTICE TEST 2026/2027
CH 6 - ANS ✔✔
Manufacturing an item before it is needed is an example of what form of waste?
A. inappropriate processing
B. overproduction
C. motion
D. underutilization of employees - ANS ✔✔B. overproduction
Which of the following best characterizes JIT systems?
A. Annual review of operation methods
B. Pull method of materials flow
C. Push method of material flow
D. Build inventory at a modest rate - ANS ✔✔B. Pull method of materials flow
The ability to automatically detect the occurrence of an abnormality, thereby helping achieve
quality at the source, is
A. muda.
B. jidoka.
C. poka-yoke.
D. kaizen. - ANS ✔✔B. jidoka.
Which of the following is NOT a benefit of small lot size for lean systems?
A. Potential increase in process setups
,B. Enables a uniform system workload
C. Reduction-of-cycle inventory
D. Reduction in product lead times - ANS ✔✔A. Potential increase in process setups
One of the LEAST effective supplier strategies for lean systems is
A. to include suppliers during the product design phase.
B. smaller, more frequent stock shipments.
C. a short-term, competitive relationship between the company and the supplier.
D. use of local suppliers. - ANS ✔✔C. a short-term, competitive relationship between the
company and the supplier.
The method that groups products with similar characteristics into families and sets aside groups
of machines for their production is called
A. kanban.
B. group technology.
C. jidoka.
D. 5S. - ANS ✔✔B. group technology.
Benefits of having a flexible workforce include all of the following EXCEPT:
A. a more uniform work flow.
B. it is easier to relieve bottlenecks.
C. decreased reliance on inventory buffers.
D. decreased worker morale. - ANS ✔✔D. decreased worker morale.
Value stream maps typically include data related to each process including
A. changeover time.
B. cycle time.
, C. uptime.
D. All of the above. - ANS ✔✔D. All of the above.
What is the takt time of a manufacturing cell that must produce 250 parts over one shift with 7
hours of available time?
A. 35 parts per hour
B. 0.60 parts per minute
C. 1.68 minutes per part
D. 0.60 minutes per part - ANS ✔✔C. 1.68 minutes per part
If 3,000 parts are in work in process before an assembly operation which is scheduled to process
7,500 parts every 5 days, how many days of work in process inventory are sitting before
assembly?
A. 2.0 days
B. 2.5 days
C. 0.4 days
D. 0.5 days - ANS ✔✔A. 2.0 days
Which of the following is NOT characteristic of a kanban system?
A. It serves as a push mechanism.
B. It controls the movement of containers from source/storage to the production process.
C. Each container contains equal numbers of non-defective parts.
D. At least one card is associated with a container of process input material. - ANS ✔✔A. It
serves as a push mechanism.
The average daily demand for component B is 750 units. The average time for waiting during the
production process and materials handling is 0.15 days. Processing time per container is 0.1
PRACTICE TEST 2026/2027
CH 6 - ANS ✔✔
Manufacturing an item before it is needed is an example of what form of waste?
A. inappropriate processing
B. overproduction
C. motion
D. underutilization of employees - ANS ✔✔B. overproduction
Which of the following best characterizes JIT systems?
A. Annual review of operation methods
B. Pull method of materials flow
C. Push method of material flow
D. Build inventory at a modest rate - ANS ✔✔B. Pull method of materials flow
The ability to automatically detect the occurrence of an abnormality, thereby helping achieve
quality at the source, is
A. muda.
B. jidoka.
C. poka-yoke.
D. kaizen. - ANS ✔✔B. jidoka.
Which of the following is NOT a benefit of small lot size for lean systems?
A. Potential increase in process setups
,B. Enables a uniform system workload
C. Reduction-of-cycle inventory
D. Reduction in product lead times - ANS ✔✔A. Potential increase in process setups
One of the LEAST effective supplier strategies for lean systems is
A. to include suppliers during the product design phase.
B. smaller, more frequent stock shipments.
C. a short-term, competitive relationship between the company and the supplier.
D. use of local suppliers. - ANS ✔✔C. a short-term, competitive relationship between the
company and the supplier.
The method that groups products with similar characteristics into families and sets aside groups
of machines for their production is called
A. kanban.
B. group technology.
C. jidoka.
D. 5S. - ANS ✔✔B. group technology.
Benefits of having a flexible workforce include all of the following EXCEPT:
A. a more uniform work flow.
B. it is easier to relieve bottlenecks.
C. decreased reliance on inventory buffers.
D. decreased worker morale. - ANS ✔✔D. decreased worker morale.
Value stream maps typically include data related to each process including
A. changeover time.
B. cycle time.
, C. uptime.
D. All of the above. - ANS ✔✔D. All of the above.
What is the takt time of a manufacturing cell that must produce 250 parts over one shift with 7
hours of available time?
A. 35 parts per hour
B. 0.60 parts per minute
C. 1.68 minutes per part
D. 0.60 minutes per part - ANS ✔✔C. 1.68 minutes per part
If 3,000 parts are in work in process before an assembly operation which is scheduled to process
7,500 parts every 5 days, how many days of work in process inventory are sitting before
assembly?
A. 2.0 days
B. 2.5 days
C. 0.4 days
D. 0.5 days - ANS ✔✔A. 2.0 days
Which of the following is NOT characteristic of a kanban system?
A. It serves as a push mechanism.
B. It controls the movement of containers from source/storage to the production process.
C. Each container contains equal numbers of non-defective parts.
D. At least one card is associated with a container of process input material. - ANS ✔✔A. It
serves as a push mechanism.
The average daily demand for component B is 750 units. The average time for waiting during the
production process and materials handling is 0.15 days. Processing time per container is 0.1
