EMSHA4A 2015 OP 1.pdf

# EMSHA4A 2015 OP 1.pdf - VAAL UNIVERSITY OF TECHNOLOGY...

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............................................................. .......................................................... SIGNATURE OF EXAMINER SIGNATURE OF MODERATOR VAAL UNIVERSITY OF TECHNOLOGY FACULTY OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING B TECH: ENGINEERING: MECHANICAL SUBJECT : STRENGTH OF MATERIALS IV EMSHA4A DATE : MAY 2015: OPPORTUNITY ONE DURATION : 3 HOURS EXAMINERS : LM MASU/ PK NZIU MODERATOR : ON MVUDI REQUIREMENTS : POCKET CALCULATORS MAY BE USED CLOSED BOOK EXAM _________________________________________ INSTRUCTIONS: 1 ANSWER ANY FIVE QUESTIONS 2 MARKS ARE INDICATED IN PERCENTAGES THIS PAPER CONSISTS OF: 5 typed pages DO NOT TURN THE PAGE BEFORE PERMISSION IS GRANTED ------------------------------------------------------------------------------------------------------------------------

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............................................................. .......................................................... SIGNATURE OF EXAMINER SIGNATURE OF MODERATOR Question One [20 Marks] A horizontal beam, simply supported at its ends, carries a load which varies uniformly from 1000kg/m at one end to 5000kg/m at the other. Determine the central deflection if the span is 10m , section 0.4m deep, and the maximum bending stress of 90 MPa and Youngs modulus of E=205GPa. Question Two [20 Marks] A beam AD, 20 m long, rests on supports at A, B, and C at the same level. AB=8 m; BC=10 m. the
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