Diploma Design of Machine Elements Question Papers Download PDF

Design of Machine Elements Question Papers

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Welcome to Diploma Exam Corner, In this section you can find out the Diploma Design of Machine Elements Question Papers Previous Year Question paper You can download Diploma Strength of Materials Question Papers as pdf.

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Unit 1 Engineering Materials and Joints
Chapter: 1.1:
General Considerations in Machine Design. Engineering
materials – Factors affecting selection of material – BIS
designation of Ferrous materials – Preferred number – Factor of
safety and allowable stress – Stresses: Tension, Compression,
Shear, Bearing pressure Intensity, Crushing, bending and torsion

problem. Creep strain and Creep Curve- Fatigue, S-N curve,
Endurance Limit – Stress Concentration – Causes & Remedies.
Theories of Elastic Failures – Principal normal stress theory,
Maximum shear stress theory & maximum distortion energy
theory.
Chapter: 1.2:
Joints: Design of sleeve and cotter joint, knuckle joint and
welded joint.

Diploma Design of Machine Elements Question Papers

Unit 2 Design Of Shafts, Keys and Couplings
Chapter: 2.1:
Shafts: Design of shafts subjected to – twisting moment –
bending moment – combined twisting and bending moments –
fluctuating loads – design of shafts based on rigidity.
Chapter: 2.2:
Keys: Types of keys – design of sunk keys only – Effect of
keyways on shaft – problems.
Couplings: Requirements of good couplings – types – design of –
rigid protected type flange couplings – marine couplings – pin type
flexible coupling (Description only).

Unit 3 Design of Flat Belts and V-Belts:
Chapter: 3.1:
Flat Belts: Types of belts – materials for belt -– types of belt
drives – Speed ratio – effect of slip – length of flat belts –Tension
Ratio T1/T2=ecentrifugal tension – power transmitted –
condition for maximum power – transmission – Initial Tension –
problems – design procedure of flat belts – design of flat belt
based on manufacturer’s data only – problems.
Chapter: 3.2:
V-belt drive – comparison with flat belt drive – designation of Vbelts – length of belt – power transmitted – Design of V-belt using
manufacturer’s data only – Problem

Unit 4 Design of Bearings & Spur Gears
Chapter: 4.1:
Bearings: Classifications of bearings – sliding contact and rolling
contact bearings – radial and thrust bearings – roller bearing –
types – Designation of ball bearings – materials used for bearings

journal bearings – heat generated – heat dissipated – cooling oil
requirement – problems – design of journal bearings – Problems.
(Design based on approved data books only.).
Chapter: 4.2:
Spur Gears: Gear drives – Types of gears – applications materials – spur gear terminology – design of spur gear based on
Lewis and Buckingham equation (design procedure only) – speed
reducer – types.

Unit 5 Computer Aided Design (CAD) and Geometric Modelling
Chapter: 5.1:
CAD – Roles of CAD in design – Development and uses –
Applications – Advantages – Product cycle – Design process:
Shigley Model – Pahl and Beitz Model – Sequential Engineering –
Concurrent Engineering – 2D and 3D Transformation.
Chapter: 5.2:
Geometric Modelling: Solid modelling – entities – advantages and
disadvantages – Boolean operations – Boundary representation –
Constructive Solid Geometry – Comparison – Finite Element
analysis – Steps.