Punjab Technical University 2005 M.Tech Machine Design WORK ENGINEERING AND ERGONOMICS ME 515 - Question Paper

second Sem May 2k5

Max marks 100

Note: Attempt any 5 ques.. All ques. carry equal marks.

1. What is productivity and explain the factors which affect productivity of an organization and the national productivity. Name the different types of productivity measures and discuss how they are determined.

2. Define methods study and discuss its procedure in detail. What could be the objectives of conducting method study on a job and what factors contribute towards selection of a issue for method study?

3. What are tools used by methods engineers for recording and communicating a work method. Recommend suitable techniques for recording data in method study issues relating to:

(a) Factory layout
(b) Material handling
(c) Work place layout.
(d) Gang work.

4. Define a therblig. Write the names of various therbligs and discuss every 1 of them with the help of examples. What is a Simo chart and how is it made?


5. A stop watch time study has been made of operations which consist of 4 elements. Table beneath provide continuous time readings in centiminutes, rating and allowances:

Observation
Element
1 2 3 4
1 9 15 28 32
2 40 46 59 62
3 71 80 94 97
4 106 13 27 30
5 38 43 56 59
6 67 72 84 88
7 98 203 18 21
8 28 33 46 49
9 57 62 75 79
10 68 93 306 09
avg. rating 105 110 100 90
Allowances 15 10 20 25

Determine
(a) Basic time for every element
(b) Standard time of operation
(c) Number of workers to be employed if 5000 pieces are needed per day (8 working hours)
(d) Whether the number of observations are sufficient for every element if the desired confidence level is 90% and accuracy is + 5%.

6. Define biomechanics of motion and classify the movements of body members. elaborate the various anatomical levers involved in different occupational maneuvers? provide their location, functions and limitations.

7. What do you understand by metabolism and basal metabolism? How does energy expenditure of man vary with physical activity? What factors govern the quality of visual environment?

8. Define control device. elaborate its various kinds and functions on which they perform? Why identification of control is important? explain the methods used for identification of controls by giving various features.

Earning:   Approval pending.