E1 16l| 46l AsiacellZAIN IQY:YAIO Mid-Mechanic..University of MisanEngineering CollegeMechanical Engineering DepartmentSubject: Mechanics of MaterialsStage: 2d StageTime: 1.5 hourDate: 25/2/ 2021Mid Examination/ First SemesterNote: The total mark 15Q1\ A copper bar consists from three sections: sections 1 is of 25 mm diameterand 60 mm long, section 2 is of 15 mm diameter and 50 mm long and section 3 is20 mm square and 40 mm long. The bar is subjected to an axial tensile load whichinduces a stress of 20 MN/m? on the smallest cross section. Determine the totalincrease in the length of the bar when the load is applied. For copper E=100 GN/m?.(Smark)Q2\ A compound bar is formed from copper rod of diameter 30 mm and a coaxialsteel tube of cross-sectional area 1500 mm? which are firmly attached at their ends.Determine the stress in the copper and in the steel when the temperature of thebar is dropped by 40°C and a compressive force of 100 kN is applied.For copper, E = 100 GN/m with a = 16.5 x10" per °c.For steel, E = 200 GN/m? with a = 11 x10“ per °c.(5mark)Q3\ A beam AB, 6 m long, is simply supported at A and D (where D is 1.5 m fromB). It carries a 24 kN concentrated load at C, 2 m from A, and a uniformlydistributed load of 8 kN/m over the remainder of the beam (C-B). Draw the S.F. andB.M. diagrams and determine the value of the maximum B.M and its location.(5mark)Good LuckAhaeel AlshanТеacherНеad of DepartmentDr. Sabah Falih HabibProf. Dr. Ahmed K. Alshara

Answered: Image /qna-images/answer/33dda029-951e-483a-ba1a-22ec3d152452.jpg

Q1\ A copper bar consists from three sections: sections 1 is of 25 mm diameter and 60 mm long, section 2 is of 15 mm diameter and 50 mm long and section 3 is 20 mm square and 40 mm long. The bar is subjected to an axial tensile load which induces a stress of 20 MN/m? on the smallest cross section. Determine the total increase in the length of the bar when the load is applied. For copper E=100 GN/m?. (5mark)

Q1\ A copper bar consists from three sections: sections 1 is of 25 mm diameter and 60 mm long, section 2 is of 15 mm diameter and 50 mm long and section 3 is 20 mm square and 40 mm long. The bar is subjected to an axial tensile load which induces a stress of 20 MN/m? on the smallest cross section. Determine the total increase in the length of the bar when the load is applied. For copper E=100 GN/m?. (5mark)

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.3DP

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