File Solutions_Mid-term_Exam.pdf

# File Solutions_Mid-term_Exam.pdf - SOLUTIONS OF THE...

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1 SOLUTIONS OF THE MID-TERM EXAM __________________________________________ AUTUMN SEMESTER 2011 SUBJECT NAME : MECHANICS OF SOLIDS SUBJECT NO : 48331 DAY/DATE : WEDNESDAY, 20 th APRIL 2011 TIME ALLOWED : 2 Hours 30 Min START/END TIME : 9:00 am – 11:30 am NOTES/INSTRUCTIONS TO CANDIDATES : There are six (6) questions. All questions are to be attempted . Show your work clearly. The value of each question is as indicated on the question paper. THIS IS A CLOSED BOOK EXAMINATION. Non-programmable calculators and drawing instruments may be used. Formulas are listed on the last page. Write your tutor’s name on the answer booklet.

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2 Question 1 - Multiple choice (Total 30 Marks) Write your choices on the solution booklet. For example write “Question 2.7-Answer (e)”. 1.1 - Referring to the figure below, at which point or points is the bending moment zero? (6 Marks) (a) A, C and D (b) A and B (c) A and D (d) B and C 1.2 – Which of the following is a true statement? (6 Marks) (a) For a beam under bending moment, the normal strain distribution is linear across the section of the beam only when the material is elastic. (b) For a beam under bending moment, the normal strain distribution is linear across the section of the beam only when the cross-section is uniform (not composite). (c) For a beam under pure bending moment, shear stress distribution on a rectangular section of the beam is linear across the section. (d) For a beam under bending moment, the normal strain distribution is linear across the section of the beam even if the material is not elastic. 1.3 - Which of the following is not a true statement? (6 Marks) (a) The forces on the rigid-body may cause rotation of the body if net moment of forces about any arbitrary point is not zero. (b) The forces acting on the rigid-body automatically satisfy moment equilibrium
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## This note was uploaded on 08/22/2011 for the course ENG 48331 taught by Professor Brown during the Three '11 term at University of Technology, Sydney.

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File Solutions_Mid-term_Exam.pdf - SOLUTIONS OF THE...

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