Motion and Time Studies

Question 1

Definition of a motion study

Answer 1

Study of body motions employed in performing a job to develop the most efficient work method

Question 2

Definition of a time study

Answer 2

Study of time it takes to complete components of an activity to redesign processes by reducing bottlenecks and eliminating necessary waste

Question 3

Purpose of motion time studies

Answer 3

1. To develop an efficient system and method
2. Standardize this system and method
3. Determine the time required to do this method.
4. Assist in training worker for this method.

Question 4

Taylorism

Answer 4

Eliminated idle time and duplication of effort and reduced jobs to short repetitive cycles with systematic skills. Make workers act like robots.

Question 5

Therbligs

Answer 5

Basic motions of the human body to help categorize tasks and predict times.

Question 6

Time study results

Answer 6

Normal time: elapsed elemental time normalized by performance rating

Standard time: normal time normalized by allowance factors

Question 7

Performance rating

Answer 7

A weighting factor based on

1. Skill
2. Effort
3. Conditions
4. Consistency

Question 8

Allowance factors

Answer 8

A weighting factor based on

1. Personal delays (i.e. bathroom)
2. Fatigue
3. Unavoidable delays (i.e. cleaning up)

Question 9

Predetermined time study

Answer 9

We break down the task into basic components and can predict how long it should take and design around that ahead of time.

Question 10

Work sampling

Answer 10

Used for ill defined or non-repetitive tasks; breaks workers job into % of time spent on each larger task (i.e. in meetings, on the phone, taking breaks)