NCT Quality Control & Process Improvement 2

Question 1

Which quality management tool is used to visually separate the 'vital few' causes from the 'trivial many' in fleet maintenance defects?

Accepted Answer

Pareto chart

Answer

A Pareto chart ranks causes by frequency or impact, helping prioritize the 20% of causes responsible for 80% of problems.

Question 2

In a PDCA quality improvement cycle, what is the primary focus of the 'Check' phase?

Accepted Answer

Evaluate results against the expected outcomes

Answer

The Check phase involves measuring and analyzing results to determine whether the implemented change achieved its intended goal.

Question 3

A fleet manager notices tire replacement intervals vary widely between drivers. Which process improvement technique best identifies the root cause?

Accepted Answer

5 Whys analysis

Answer

The 5 Whys technique iteratively asks 'why' to drill down to the underlying root cause of a variance problem.

Question 4

Which metric best measures the effectiveness of a preventive maintenance program in fleet quality control?

Accepted Answer

Ratio of preventive to reactive maintenance work orders

Answer

A high ratio of preventive to reactive maintenance indicates the program is catching issues before they become failures.

Question 5

ISO 9001 certification in a fleet maintenance operation primarily demonstrates:

Accepted Answer

Processes are documented, monitored, and continuously improved

Answer

ISO 9001 is a quality management system standard focused on documented processes, consistency, and continual improvement.

(NCT) NAFA Certified Technician Practice Test