Work study: What is the primary purpose of micromotion study in industrial engineering?

Introduction / Context:
Micromotion study is a refined form of motion study that breaks tasks down into therbligs (basic motions). By filming and analyzing these micro-movements, engineers eliminate unnecessary motions, standardize best methods, and establish accurate time data for planning and incentives.

Given Data / Assumptions:

• Short-cycle, repetitive manual operations suitable for high-speed video analysis.
• Objective is method improvement, operator training, and time data generation.
• Use of chronocyclographs or video with timing grids.

Concept / Approach:
Micromotion analysis identifies value-adding vs. non-value-adding motions. Principles of motion economy (use both hands, minimize eye–hand adjustments, reduce reach and grasp, ensure proper workplace layout) guide the improved method. Captured elemental times feed synthetic data systems (e.g., MTM, MOST) for setting standards without full time studies on each job.

Step-by-Step Solution:

Verification / Alternative check:
Pilot implementations show reduced cycle times and fatigue, plus improved consistency across shifts when standardized methods are trained.

Why Other Options Are Wrong:
Each listed purpose is valid; focusing on only one understates the broad value of micromotion study.

Common Pitfalls:
Poor camera placement; ignoring ergonomic constraints; failing to retrain operators after method change.

Final Answer:
all of the above