Certified Six Sigma Black Belt Exam Certified Six Sigma Black Belt Lean Enterprise Concepts 1

Question 1

In a Lean enterprise, 'takt time' is best defined as:

Accepted Answer

The rate at which products must be completed to meet customer demand

Answer

The average time a machine takes to complete one cycle

Answer

The total elapsed time from order placement to delivery

Answer

The maximum allowable defect rate per production shift

Question 2

Which Lean technique is specifically designed to reduce changeover or setup time between production runs to under ten minutes?

Accepted Answer

SMED

Answer

5S

Answer

Heijunka

Answer

Poka-yoke

Question 3

A Lean value stream map (VSM) is primarily used to:

Accepted Answer

Identify and visualize all steps — value-added and non-value-added — in a process flow

Answer

Track individual employee performance metrics across departments

Answer

Document standard operating procedures for ISO certification

Answer

Schedule preventive maintenance for production equipment

Question 4

In Lean enterprise, 'heijunka' refers to:

Accepted Answer

Leveling production volume and mix over a given time period

Answer

Stopping production automatically when a defect is detected

Answer

The practice of continuous incremental improvement by all employees

Answer

A pull signal that authorizes movement of materials

Question 5

The 5S methodology in Lean enterprise refers to five practices, the first of which — 'Sort' — means:

Accepted Answer

Removing all items from the workplace that are not needed for current operations

Answer

Arranging items so the most-used tools are closest to the point of use

Answer

Creating visual standards so abnormalities are immediately obvious

Answer

Regularly auditing the workplace to sustain previous improvements

Question 6

Which of the following correctly describes a 'pull' system in Lean production?

Accepted Answer

Each upstream process produces only what the downstream process has actually consumed or requested

Answer

Production is scheduled in large batches based on a forecast pushed from central planning

Answer

Management sets daily production targets and pushes output to the next station on a fixed schedule

Answer

A computer system automatically replenishes inventory to a preset maximum level