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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Autumn Examinations 2010/
Manufacturing Systems
Module Code: MANU 8004
School: Mechanical & Process Engineering
Programme Title: Bachelor of Engineering (Hons) in Biomedical Engineering Bachelor of Science (Hons) in Process Plant Technology Bachelor of Science (Hons) in Advanced Manufacturing Tech. Bachelor of Engineering (Hons) in Mechanical Engineering
Programme Code: EBIOM_8_Y3, EBIOM_8_Y4, EPPTE_8_Y4, EAMTE_8_Y4, EMECH_8_Y3, EMECH_8_Y
External Examiner(s): Mr. Ger Reilly, Mr. Pat Ryan Internal Examiner(s): Michael P O’Mahony
Instructions: Answer THREE Questions
Duration: 2 hours
Sitting: Autumn 2011
Requirements for this examination:
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination paper. If in doubt please contact an Invigilator.
Q1.
(a) In the context of Aggregate planning , discuss both the Demand and Capacity options employed by companies in an effort to balance Demand and capacity (8 Marks)
(b) Explain the difference between Actual and Effective Capacity (5 Marks)
(c) Discuss TWO determinants of Effective Capacity (8 Marks)
(d) The Acme Joinery Company assembles kitchen tables using bought in parts of 4 legs and a top per unit. These have a lead time of two and three weeks respectively and assembly takes one week. The company receives orders for 20 tables to be delivered in week 5 of a planning period and 40 tables in week 7. It has a current stock of 2 complete tables, 40 legs and 22 tops. When and how many component parts should be ordered to meet known demand? (12 marks)
Q
(a) (a) Discuss ONE of the following ( 8 Marks) i. Maslow’s Hierarchy of Needs ii. Herzberg’s Two-Factor Theory iii. Hawthorn Studies
(b) What are the objectives of a payment System (9 Marks)
(c) Explain what the meaning of Measured Day work and how does it differs from individual
payment by results i.e. piece rates (7 Marks)
(d) What are the main reasons for the trend towards Group Payment by Results Schemes?
(4 Marks)
(e) What are the prerequisites for successful implementations of a Group PBR scheme? (5 Marks)
Q
The data in Table Q3 shows the element times in seconds and the technological relationship for assembly of a particular product. Forecasts of likely demand indicate that at least 120,000 units will be required per year Assuming 2000 working hour per year
(a) Draw the precedence diagram (5 Marks) (b) Use the Rank Positional Weight method, obtain a suitable allocation of work elements to work stations in the assembly line. (15 Marks) (c) Calculate the balance delay and balance loss (2 Marks) (d) By considering a re-distribution of work elements, show how an improvement on the solution obtained in (b) above can be realized, including improvement in balance loss (5 Marks) (e) If, for Safety Reasons, elements 11 & 14 cannot be in the same work station, what effect, if any, this will have on your improved solution. State the allocation of elements to work stations to comply with the safety requirements (6 Marks)
