Practice Examination Questions And

Certified Manufacturing Engineer (CMfgE) Practice Examination Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

Includes all key subjects: Manufacturing Process Control, Quality,

Automation, Lean, Design, Materials, and Management.

• Which of the following best describes the purpose of Statistical Process

Control (SPC)?

• To determine customer satisfaction
• To monitor and control process variation
• To increase the speed of production
• To identify bottlenecks in scheduling

Rationale: SPC focuses on using data to detect and control variation within

a process to maintain consistent quality.

• / 4

2. In manufacturing, takt time is defined as:

• The time to complete one unit
• The rate at which a product must be produced to meet customer

demand

• The time required to set up a machine
• The time a part spends in inventory

Rationale: Takt time links production pace to customer demand, ensuring

production aligns with required delivery rates.

• Which of the following is a non-destructive testing (NDT) method?
• Hardness testing
• Tensile testing
• Ultrasonic testing
• Impact testing

Rationale: Ultrasonic testing inspects internal defects without damaging

the material or component.

4. The term “lean manufacturing” primarily focuses on:

• Increasing inventory
• Eliminating waste while maximizing customer value
• Reducing employee numbers
• Increasing batch sizes 2 / 4

Rationale: Lean manufacturing aims to remove non-value-added activities

to improve efficiency and customer value.

• Which of the following is a continuous improvement methodology

derived from Toyota Production System?

A. ISO 9001

• Six Sigma
• Kaizen
• Just-In-Time

Rationale: Kaizen emphasizes small, continuous improvements involving

all employees.

6. The purpose of a cause-and-effect diagram is to:

• Identify root causes of a problem
• Track production quantities
• Measure process time
• Estimate labor costs

Rationale: Cause-and-effect (Ishikawa) diagrams visually organize

potential causes contributing to a problem.

• A control chart shows data points trending toward a control limit. This

indicates: 3 / 4

• Random variation
• A process shift or special cause variation
• Process stability
• Operator error

Rationale: A trend toward a limit may indicate an assignable cause,

suggesting corrective action is needed.

8. A key benefit of automation in manufacturing is:

• Higher utility costs
• Increased consistency and reduced human error
• Greater product diversity
• Reduced maintenance requirements

Rationale: Automation improves repeatability, accuracy, and process

reliability.

• Which of the following represents a pull production system?
• Material Requirements Planning (MRP)
• Push scheduling
• Kanban system
• Infinite loading

Rationale: Kanban systems signal demand from downstream processes,

making it a pull-based approach.

• / 4