# Strength of Material SOM 4th Sem/5309/May 2018 Diploma Paper

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## Strength of Material SOM 4th Sem/5309 /May 2018 Diploma Paper

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### Section a Strength of Material SOM 4th Sem/5309/May 2018 Diploma Paper

The deformation per unit length is called ____________

#### The deformation per unit length is called ____________

MOI of a triangular section about its base is ____________

#### MOI of a triangular section about its base is ____________

B.M. is _________ at a section where S.F. is Zero after changing its sign.

#### B.M. is _________ at a section where S.F. is Zero after changing its sign.

The strength of beam is proportional to its ____________

#### The strength of beam is proportional to its ____________

If the strut is vertical it is known as _______________

#### If the strut is vertical it is known as _______________

The polar modulus of a solid shaft= _______________

#### The polar modulus of a solid shaft= _______________

The torque produces _________ in a member.

#### The torque produces _________ in a member.

A spring is used to absorb energy due to _____________

#### A spring is used to absorb energy due to _____________

A length of wire when wound in a helix form is called __________

#### A length of wire when wound in a helix form is called __________

The bending stress on the neutral axis is _____________

### Section B :Strength of Material SOM 4th Sem/5309/May 2018 Diploma Paper

Define: i) Young’s modulus of elasticity ii) Modulus of rigidity.

#### ii) Modulus of rigidity.

State and prove the theorem of perpendicular axis.

#### Prove the theorem of perpendicular axis.

Draw S.F. and B.M. diagrams for a cantilever carrying u.d.l. on its span.

#### Draw S.F. and B.M. diagrams for a cantilever carrying u.d.l. on its span.

What do you understand by neutral axis and moment of resistance?

#### Neutral axis and moment of resistance.

A load of 50 kN is suddenly applied to a steel rod 2m long and 1000 mm2 in cross-section. Determine the strain energy that can be absorbed, if E=200 KN/mm2.

#### Load of 50 kN is suddenly applied to a steel rod 2m long and 1000 mm2 in cross-section. Determine the strain energy that can be absorbed, if E=200 KN/mm2.

Define: i) Slenderness ratio, ii) Bulking factor iii) Bulking load.

#### ii) Bulking factor

A close-coiled spring has radius of 40mm and length of 320mm. It is required to extend 21mm under a pull of 185 N. If C=84 GN/m2, determine the diameter of the wire.

## Strength of Material SOM 4th Sem/5309 /May 2018 Diploma Paper

### Section c :-Strength of Material SOM 4th Sem/5309/May 2019 Diploma Paper

A brass bar, having cross sectional area of 1000 mm2 , subjected to axial forces as shown in fig.. Find the total elongation of bar. Take E = 1X105 N/mm2.

#### Brass bar, having cross sectional area of 1000 mm2 , subjected to axial forces as shown in fig.. Find the total elongation of bar. Take E = 1X105 N/mm2.

A simply supported beam 6m long is carrying a uniformly distributed load of 2KN/m over a length of 3m from the left end. Draw the S.F. and B.M. diagrams for the beam and also calculate the maximum B.M. on the section.

#### Simply supported beam 6m long is carrying a uniformly distributed load of 2KN/m over a length of 3m from the left end. Draw the S.F. and B.M. diagrams for the beam and also calculate the maximum B.M. on the section.

A rectangular beam 300mm deep 150mm wide is simply supported over a span of 8m. Find the maximum uniformly distributed load that the beam can carrying, if the stress is not exceed 120 N/mm2.

#### Rectangular beam 300mm deep 150mm wide is simply supported over a span of 8m. Find the maximum uniformly distributed load that the beam can carrying, if the stress is not exceed 120 N/mm2.

A solid steel shaft has to transmit 75 KW at 200 r.p.m. taking allowable shear stress as 70 MN/m2. Find suitable diameter for the shaft, if the maximum torque transmitted on each revolution exceeds the mean by 30%.

#### Solid steel shaft has to transmit 75 KW at 200 r.p.m. taking allowable shear stress as 70 MN/m2. Find suitable diameter for the shaft, if the maximum torque transmitted on each revolution exceeds the mean by 30%.

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