Question:
In “Time and Motion” study, the symbols used to define steps in a process chart are :
In “Time and Motion” study, the symbols used to define steps in a process chart are :
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Memorize the five ASME symbols with the acronym 'OTIDS' (Operation, Transportation, Inspection, Delay, Storage) to easily identify them in work study exams.
Updated On: Jul 23, 2026
- Operation, Recording, Transportation, End of Activity
- Start, Operation, Recording, Delay, Activity
- Operation, Inspection, Transport, Delay, Storage, Combined Activity
- Operation, Transportation, Inspection, Delay, Storage
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Process charts are graphical representations used in time and motion studies to map the sequence of steps in a work process.
To standardize these charts, specific geometric symbols developed by the American Society of Mechanical Engineers (ASME) are used to represent different types of activities.
Step 2: Detailed Explanation:
Let us examine the standard five symbols used in a process chart:
1. Operation (represented by a Circle $\bigcirc$): This indicates a step where a physical or chemical change is made to an object, or when information is given or received.
2. Transportation (represented by an Arrow $\rightarrow$): This indicates the movement of workers, materials, or equipment from one location to another.
3. Inspection (represented by a Square $\square$): This represents a step where an object is examined, verified, or checked for quality, quantity, or accuracy.
4. Delay (represented by a 'D' shape $\text{D}$): This indicates a temporary halt or wait in the process, where no productive work is being performed.
5. Storage (represented by an inverted Triangle $\nabla$): This represents a step where an object is kept under controlled conditions, requiring authorization for removal.
Therefore, these five categories—Operation, Transportation, Inspection, Delay, and Storage—make up the standard symbol set used to map processes.
Step 3: Final Answer:
The symbols used in a process chart define Operation, Transportation, Inspection, Delay, and Storage, corresponding to option (D).
Process charts are graphical representations used in time and motion studies to map the sequence of steps in a work process.
To standardize these charts, specific geometric symbols developed by the American Society of Mechanical Engineers (ASME) are used to represent different types of activities.
Step 2: Detailed Explanation:
Let us examine the standard five symbols used in a process chart:
1. Operation (represented by a Circle $\bigcirc$): This indicates a step where a physical or chemical change is made to an object, or when information is given or received.
2. Transportation (represented by an Arrow $\rightarrow$): This indicates the movement of workers, materials, or equipment from one location to another.
3. Inspection (represented by a Square $\square$): This represents a step where an object is examined, verified, or checked for quality, quantity, or accuracy.
4. Delay (represented by a 'D' shape $\text{D}$): This indicates a temporary halt or wait in the process, where no productive work is being performed.
5. Storage (represented by an inverted Triangle $\nabla$): This represents a step where an object is kept under controlled conditions, requiring authorization for removal.
Therefore, these five categories—Operation, Transportation, Inspection, Delay, and Storage—make up the standard symbol set used to map processes.
Step 3: Final Answer:
The symbols used in a process chart define Operation, Transportation, Inspection, Delay, and Storage, corresponding to option (D).
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