Correct Answer - Option 2 : String diagram
Method study - Method study is essentially concerned with finding better ways of doing things. It adds value and increases the efficiency by eliminating unnecessary operations, Avoidable delays and other forms of waste.
Diagrams of method study
Flow diagram - In a manufacturing shop, there is the movement of men and material from one location to another. The flow diagrams indicate the movements while the work is being accomplished.
A flow diagram is drawn to scale, in which the relative position of machinery, jigs, fixtures, are shown and the path followed by the men and materials are marked.
String diagram - The string diagram is a scale layout drawing on which, length of the string is used to record the extent as well as the pattern of the movement of a worker working within a limited area during a certain period of time. The primary function of the string diagram is to produce a record of the existing set of the conditions so that the job of seeing what is actually taking place is made as simple as possible.
Operation process chart - It is a graphical and symbolic representation of the processing activities performed on the work-piece. They are of three types –
- Material type flow process chart
- Man type flow process chart
- Equipment type flow process chart