Diploma Strength of Materials Previous Year Question paper with answer key – February 2022 Download now

Diploma Strength of Materials Previous Year Question paper with answer key – February 2022 Download now

Diploma Strength of Materials Previous Year Question paper with answer key

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Welcome to Diploma Exam Corner, In this section you can find out the Diploma Strength of Materials Previous Year Question paper with answer key for the February 2022 Board Examination. You can download Diploma Strength of Materials Previous Year Question paper with answer key as pdf.

Diploma Strength of Materials Previous Year Question paper with answer key

Unit 1 ENGINEERING MATERIALS
Chapter: 1.1: Engineering materials: Classification – definition of Mechanical properties – ferrous metals – cast iron – uses – advantages – types of cast iron – properties and applications – effect of impurities on cast iron. steel – classification – alloying elements – purpose of alloying – effect of alloying elements on steel – uses of steels – properties of mild steel – defects in steel – applications – properties of hard steel – market forms of steels – nonferrous metals – properties and uses.
Chapter: 1.2: Mechanical testing of materials:
Compression test – bend test – hardness test – Brinell hardness test, Vickers hardness test, Rockwell hardness test – impact test – fatigue test creep test. Tensile test of mild steel in UTM – stress strain diagram – limit of proportionality – elastic limit – yield stress – breaking stress – ultimate stress – percentage of an elongation and percentage reduction in area – problems.
Chapter: 1.3: Friction
Introduction – definition – force of friction – limiting friction – static friction – dynamic friction – angle of friction – coefficient of friction – laws of static and dynamic friction. Description only.

Diploma Strength of Materials Previous Year Question paper with answer key
Diploma Strength of Materials Previous Year Question paper with answer key

DEFORMATION OF METALS
Chapter: 2.1: Simple stresses and strains
Definition – load, stress and strain – classification of force systems: tensile, compressive and shear force systems. Hooke’s law – definition Young’s modulus – working stress, factor of safety, load factor, shear stress and shear strain – modulus of rigidity. Linear strain – deformation due to tension and compressive forces – simple problems in tension, compression and shear forces.
Chapter: 2.2: Elastic constants
Definition – lateral strain – poison’s ratio – volumetric strain – bulk modulus – volumetric strain of rectangular and circular bars – problems connecting linear, lateral and volumetric deformations – elastic constants and their relationship – problems on elastic constants. Composite bar – definition – problems in composite bars subjected to tension and compression. Temperature stresses and strains – simple problems.
Chapter: 2.3 Strain Energy
Definition – proof resilience – modulus of resilience – the expression for strain energy stored in a bar due to axial load – instatntaneous stresses due to gradual, sudden, impact and shock loads – problems computing instantaneous stress and deformation in gradual, sudden, impact and shock loadings

GEOMETRICAL PROPERTIES OF SECTIONS AND THIN SHELLS
Chapter: 3.1: Properties of sections
Definition – center of gravity and centroid – position of centroids of plane
geometrical figures such as rectangle, triangle, circle and trapeziumproblems to determine the centroid of angle, channel, T and I sections only – Definition – centroidal axis parallel axis theorem and perpendicular axis theorem (
Moment of Inertia of lamina of rectangle, circle, triangle, I and channel
sections – Definition Problems computing moment of inertia and radius of gyration for angle, T, Channel and I section
Chapter: 3.2: Thin Shells
Definition – Thin and thick cylindrical shell shell subjected to internal pressure stress causes in a thin cylindrical shell subjected to internal pressure simple problems –
subjected to internal pressure induced in a thin spherical shell subjected to internal pressure problems – change in diameter and volume o to internal pressure –
IV THEORY OF TORSION AND SPRINGS
Chapter: 4.1: Theory of Torsion
Assumptions – torsion equation hollow shafts – power transmitted Torsional rigidity –
hollow and solid shafts in weight and strength considerations Advantages of hollow shafts over solid shafts
Chapter: 4.2: Springs
Types of springs – Difference between open and closely coiled helical springs
coiled helical spring subjected to an axial load shear stress, deflection, stiffness and resilience of closed coiled helical springs.
V SF AND BM DIAGRAMS OF BEAMS AND THEORY OF BENDINGChapter:

5.1: SF and BM diagrams
Classification of beams sign conventions for shear force and bending moment
loadings – Relationship between load, force and bending moment at a section – shear force diagram and bending moment diagram of cantilever and simply supported beam subjected to point load and uniformly distributed load (UDL) – Determination of Maximum bending moment in cantilever beam and simply supported beam when they are subjected to point load and uniformly distributed load.
Chapter: 5.2: Theory of bending
Theory of simple bending – Assumptions – Neutral axis – bending stress distribution – moment of resistance – bending equation – M/I=f/y=E/R – Definition – section modulus – rectangular and circular sections – strength of beam – simple problems involving flexural formula for cantilever and simply supported beam.

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