154. The procedure of modifying work content to give more meaning and enjoyment to the job by involving employees in planning, organisation and control of their work, is termed as

[A]. job enlargement
[B]. job enrichment
[C]. job rotation
[D]. job evaluation
✅ The correct answer is option B.

157. String diagram is used

[A]. for checking the relative values of various layouts
[B]. when a group of workers are working at a place
[C]. where processes require the operator to be moved from one work place to another
[D]. all of the above
✅ The correct answer is option D.