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    Time Allowed: 45 Minutes Max. Marks: 30 Name: Roll Number: Section: JM102 Couse Code: - MEC040

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    manishtopsecrets
    This document contains two academic tasks related to mechanics of materials. Task 1 provides questions about moment of inertia, the parallel axis theorem, bending theory assumptions, moment of inertia formulas, and reasons for using hollow circular shafts. Task 2 asks to prove that a hollow shaft is stronger than a solid shaft of the same weight and material, and to determine the polar moment of inertia of an I-section.

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    Time Allowed: 45 Minutes Max. Marks: 30 Name: Roll Number: Section: JM102 Couse Code: - MEC040

    Uploaded by

    manishtopsecrets
    4 views2 pages
    This document contains two academic tasks related to mechanics of materials. Task 1 provides questions about moment of inertia, the parallel axis theorem, bending theory assumptions, moment of inertia formulas, and reasons for using hollow circular shafts. Task 2 asks to prove that a hollow shaft is stronger than a solid shaft of the same weight and material, and to determine the polar moment of inertia of an I-section.

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    test

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    som test3

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    This document contains two academic tasks related to mechanics of materials. Task 1 provides questions about moment of inertia, the parallel axis theorem, bending theory assumptions, moment of inertia formulas, and reasons for using hollow circular shafts. Task 2 asks to prove that a hollow shaft is stronger than a solid shaft of the same weight and material, and to determine the polar moment of inertia of an I-section.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    4 views2 pages

    Time Allowed: 45 Minutes Max. Marks: 30 Name: Roll Number: Section: JM102 Couse Code: - MEC040

    Uploaded by

    manishtopsecrets
    This document contains two academic tasks related to mechanics of materials. Task 1 provides questions about moment of inertia, the parallel axis theorem, bending theory assumptions, moment of inertia formulas, and reasons for using hollow circular shafts. Task 2 asks to prove that a hollow shaft is stronger than a solid shaft of the same weight and material, and to determine the polar moment of inertia of an I-section.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 2

    ACADEMIC TASK 3

    Time Allowed: 45 minutes Name: Section: JM102 SET A Note: Attempt All the Questions.
    Q1. (a) Why moment of inertia is called second moment of area. (b) State the theorem of parallel axis. (c) Write assumptions made in theory of simple bending.

    Max. Marks: 30 Roll number: Couse Code: - MEC040

    [2] [2] [2] [2] [2]

    (d) Write the moment of inertia of a rectangular section about its neutral axis. (e) Why we adopt hollow circular shaft in place of solid circular shaft.

    Q2. Prove that a hollow shaft is stronger than a solid shaft if the shaft has same length, material and same weight. [10] Q3. Determine the polar moment of inertia of I-section as shown in fig. [10]

    ACADEMIC TASK 3

    Time Allowed: 45 minutes Name:

    Max. Marks: 30 Roll number:

    Section: JM102
    SET B

    Couse Code: - MEC040

    Note: Attempt All the Questions.


    Q1. (a) What do you mean by Neutral axis? (b) State the theorem of perpendicular axis. (c) What do you mean by theory of simple bending? (d) Write the section modulus of a rectangular section about an axis through its C.G. (e) In case of torsion at what point the shear stress intensity is minimum. [2] [2] [2] [2] [2]

    Q2. Derive the Bending Equation. Also write its assumptions.

    [10]

    Q3. A beam is simply supported and carries a U.D.L of 40 KN/m run over the whole span. The section of beam is rectangular having depth as 500mm.If the maximum stress in the material of the beam is 120N/mm2 and moment of inertia of section is 7*108 mm4,Find the span of the beam. [10]

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