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Polyethylene - Material Science - Exam, Exams of Material Science and Technology

Aligarh Muslim UniversityMaterial Science and Technology

Main points of this past exam are: Polyethylene, Phases, Dominant Phase, Weight, Proportion, Solidification Process, Phase, Alloy Shown, Phases, Composition

Typology: Exams

2012/2013

Uploaded on 03/28/2013

imrann
imrann 🇮🇳

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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Autumn Examinations 2011/12
Material Science
Module Code: MECH6025
School: Mechanical & Process Engineering
Programme Title: BSc Sustainable Energy,
BEng Mechanical Engineering,
BEng Biomedical Engineering
Programme Code: ESENT_8_Y2, EMECH_7_Y2, EBIME_7_Y2
External Examiner(s): Mr Paul Kenny
Mr Conor Buckley
Mr Mike McKeon
Dr Eamonn Ahearne
Mr Gary Clerkin
Dr Laoise McNamara
Internal Examiner(s): Mr Michael P O’Mahony
Ms Sally Bryan
Instructions: Answer THREE questions
Duration: 2 Hours
Sitting: Autumn 2012
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.
pf3

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CORK INSTITUTE OF TECHNOLOGY

INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ

Autumn Examinations 2011/

Material Science

Module Code: MECH

School: Mechanical & Process Engineering

Programme Title: BSc Sustainable Energy, BEng Mechanical Engineering, BEng Biomedical Engineering

Programme Code: ESENT_8_Y2, EMECH_7_Y2, EBIME_7_Y

External Examiner(s): Mr Paul Kenny Mr Conor Buckley Mr Mike McKeon Dr Eamonn Ahearne Mr Gary Clerkin Dr Laoise McNamara

Internal Examiner(s): Mr Michael P O’Mahony Ms Sally Bryan

Instructions: Answer THREE questions

Duration: 2 Hours

Sitting: Autumn 2012

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.

Q

a) By referring to figure Q1 answer the following, i) What phases are present at point 1? ii) What is the dominant phase at point 1? iii) What is the proportion by weight of each phase at point 1? iv) Describe, step by step, the solidification process of 70%Pb/30%Sn alloy (15 marks)

Figure Q1 – Equilibrium diagram for Lead and Tin alloys

b) What factors determines which solid composition an alloy will exhibit? (4 marks) c) Differentiate between the eutectic and the eutectoid point on a steel equilibrium diagram. (5 marks) d) The carbon content in steel will dictate, to a certain degree, what applications particular steel is appropriate for. What else will determine the properties and therefore the end application of the steel? (9 marks)