Summary - Mengineering 3210

LEAVING CERTIFICATE EXAMINATION ENGINEERING – MATERIALS and TECHNOLOGY ORDINARY LEVEL – 200 marks Written Examination Marking Scheme 2009 Answer Question 1, Sections A and B and Three other questions Question 1: Total - 65 Marks Section A – 30 Marks Any six @ 5 marks each. Two part answers 3 + 2 Section B – 35 Marks Any three parts @ 12 + 12 + 11 Marks Two part answers 6 + 6 or 6 + 5 Question 2. Total - 45 Marks (a) Two parts @ 6 each One @ 8 (20) (b) One part @ 3 Two parts @ 3 (9) (c) Three parts @ 4 (12) (d) One part @ 4 marks (4) Question 3. Total - 45 Marks (a) Two parts @ 8 marks (16) (b) Two parts @ 6 each (12) (c) Two parts @ 4 each (8) (d) Two parts 5 & 4 (9) OR (d) Two parts 5 & 4 (9) Question 4. Total - 45 Marks (a) Three parts @ 5 each (15) (b) Three parts @ 4 each (12) (c) Three parts @ 4 each (12) (d) Two parts @ 3 each (6) Question 5. Total - 45 Marks. (a) Two parts @ 5 each (10) Explanation @ 8 marks Component @ 3 marks (11) (b) Two parts @ 3 each (6) (c) Two parts @ 6 each (12) (d) Two parts @ 3 each (6) Question 6. Total - 45 Marks. (a) Three parts @ 6 each (18) (b) One part @ 10 One part @ 5 (15) (c) Two parts @ 6 each (12) OR (c) Two parts @ 6 each (12) Question 7. Total - 45 Marks. (a) Two parts @ 5 each (10) (b) Four parts @ 5 each (20) (c) Three parts @ 5 each (15) OR (c) Three parts @ 5 each (15) 3 LEAVING CERTIFICATE EXAMINATION 2009 ENGINEERING - MATERIALS and TECHNOLOGY ORDINARY LEVEL – 200 Marks Sample Answers and Marking Scheme Answer Question 1, Sections A and B and Three other questions QUESTION No. 1 – Total 65 MARKS Marks SECTION A - 30 MARKS 6 parts @ 5 marks each For two part answers award 3 + 2 SECTION B - 35 MARKS 2 parts @ 12 marks each 1 part @ 11 marks Award 6 + 6 or 6 + 5 as Appropriate SECTION A – 30 MARKS (a) Always use adhesives in a well ventilated area to allow fumes dissipate. Wear protective clothing. (b) A single pole single throw electrical switch. (c) To provide guidance to a larger drill when drilling a large hole. (d) A countersink drill (e) To check if a machined hole is within stated limits. (f) The term Computer Aided Drawing refers to the use of computers in the production of 2D or 3D drawings. 2D dimensioned drawings can be used for manufacturing while 3D drawings can be used to help visualise design ideas. (g) (i) Vee form thread (ii) Square thread (h) A ratchet and pawl mechanism is used to allow a shaft, axle or pin to rotate in one direction only. It is used in mechanisms such as ratchet spanners, fishing reels, ratchet screwdrivers, micrometers and winding mechanisms of watches