Previous year question paper for ESOMH (Diploma Automobile Engineering 4th)

                                                  A. Strength of Materials:

1. Stresses and strains: (14 hrs)

- Introduction to stress and strain.

- Mechanical properties of materials.

- Tensile and compressive stress.

- Shear stress and strain.

- Hook's law and Young's Modulus of elasticity.

- Modulus of Rigidity.

- Poisson's ratio.

- Bulk Modulus.

- Deformation and stress in uniform bar.

- Deformation and stress in non uniform bar.

- Temperature stresses.

- Longitudinal and hoop stress in thin and thick cylinders.

2. Beam and Bending: (08 hrs)

- Concept of Beam and their types (simply supported, overhanging,

cantilever)

- Different types of supports.

- Concept of bending moments and shear force.

- B.M and S.F. diagram for Beams; for uniformly distributed and

concentrated loads.

- Determination of position of maximum B.M and S.F. in beam. Point of

contraflexure.

3. Bending and Shear Stresses: (12 hrs)

- Concept of simple bending, assumptions made in it and derivation of

bending equation

- Flexural formulae.

- Concept of Second Moment of Area and Section Modulus for simple

sections:

- Rectangle cross section. 

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- Circular cross section.

- Triangular cross section.

- Hollow circular cross section.

- Calculation of bending stresses for the above section with given

loading and span.

- Average shear stress in Rectangular and I

 section.

4. Springs: (08hrs)- Leaf Springs.

- Maximum deflection in leaf springs.

- Maximum stress in leaf springs.

- Close coiled and open coiled springs subjected to axial load and axial

twist.

- Stiffness of a spring.

- Strain energy and proof resistance8hrs)

5. Shafts: (08hrs)

- Concept of torque and angle of twist.

- Derivation of Torsion equation.

- Calculation of Torque transmitted by hollow and solid shafts of round

sections.

6. Columns and Struts (06 hrs)

 - Long and short columns

- Buckling of columns

 - Euler, Rankine and Gorden formulae

B. Hydraulics

7. Basics: (02 hrs)

- Properties of fluids.

8. Static Pressure: (04 hrs)

- Pascal's law

- Concept of static pressure

- pressure head

9. Measurement of Pressure: (04 hrs)

- Introduction to absolute pressure, gauge pressure vacuum

- Working of simple manometer differential manometer, bourdon gauge.

10. Flow of Liquid: (06 hrs)

- Laminar and turbulent flow.

- Law of continuity.

- Velocity head, datum head, pressure Head, Total head.

- Bernoulli's Theorem.

- Discharge measurement 

11. Flow Through Pipes: (04 hrs)

- Friction losses in pipes.

- Darcy's equation.

- Head loss due to sudden enlargement, contraction, obstruction and

bend.

12. Hydraulic Machinery (04 hrs)

 Description and application of :

- Reciprocating pump

- Centrifugal pump

- Jack

- Coupling- Coupling