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# Strength of Material SOM 4th Sem/5309/May 2019 Diploma Paper

## Strength of Material SOM 4th Sem/5309 /May 2019 Diploma Paper

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### Section a Strength of Material SOM 4th Sem/5309/May 2019 Diploma Paper

The continuous deformation of material under steady load is known as ___________

#### The continuous deformation of material under steady load is known as _____________

The change in unit volume of the body is called ____________

#### The change in unit volume of the body is called ____________

M.O.I. of a triangle about base of height h and base width, b will be ____________

#### M.O.I. of a triangle about base of height h and base width, b will be ____________

Unit of section modulus is ______________

#### Unit of section modulus is ______________

Beam support _________ Loads.

#### Beam support _________ Loads.

B.M. will be maximum, where S.F. is ____________

#### B.M. will be maximum, where S.F. is ____________

In a T-section, maximum shear stress will occur at ______________

#### In a T-section, maximum shear stress will occur at ______________

The shear stress at the top of a rectangular section is _______________

#### The shear stress at the top of a rectangular section is _______________

The torque transmitted by a hollow shaft is _______ times more than the torque transmitted by a solid shaft.

#### The torque transmitted by a hollow shaft is _______ times more than the torque transmitted by a solid shaft.

If the pitch distance between two turns is very small, then spring is called ________

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

A Rivet hole 20mm diameter is punched in a steel plate 10mm thick. The shearing strength of the plate is 350N/mm2. Find the compressive stress in the punch at the time of punching.

#### Rivet hole 20mm diameter is punched in a steel plate 10mm thick. The shearing strength of the plate is 350N/mm2. Find the compressive stress in the punch at the time of punching.

Define the following: a) Compressive load b) Strain c) Modulus of rigidity. d) Poisson’s ratio. e) Volumetric strain.

#### e) Volumetric strain.

What do you mean by point of contra flexure?

#### Point of contra flexure.

State assumption made in the theory of simple bending.

#### Assumption made in the theory of simple bending.

What must be the length of a 5m diameter aluminum wire be so that it can be so twisted through one complete revolution without exceeding a shearing stress of 42 N/mm2. Let G=2.7X104 N/mm2.

#### A Length of a 5m diameter aluminum wire be so that it can be so twisted through one complete revolution without exceeding a shearing stress of 42 N/mm2. Let G=2.7X104 N/mm2.vi. Define the following. a) Slenderness ratio b) Buckling.

Find the safe compressive load on a hollow C.I. column, one end rigidly fixed and other hinged, of 150mm external diameter and 100mm internal diameter and 10m in length. Use Euler’s formula with F.O.S. of 5 and E= 95KN/mm2.

## Strength of Material SOM 4th Sem/5309 /May 2019 Diploma Paper

Get Started https://www.youtube.com/watch?v=UHX6f8TIvX8https://www.youtube.com/watch?v=M_RR6LVICp0https://www.youtube.com/watch?v=mV41CMWonN4https://www.youtube.com/watch?v=s0LVPE0Q3LE&list=PLA9Q9SDZ781WXNAWit379A4CRLMvjGiUw&index=14&t=0s

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

A string 4 mm in diameter has original length 2 m. The string is pulled by a force of 200 N. If the final length of the spring is 2.02 m, determine: i) stress ii) strain iii) Young’s modulus

#### String 4 mm in diameter has original length 2 m. The string is pulled by a force of 200 N. If the final length of the spring is 2.02 m, determine: i) stress ii) strain iii) Young’s modulus

State and prove parallel axis theorem and perpendicular axis theorem.

#### Prove parallel axis theorem and perpendicular axis theorem.

A hollow shaft is to transmit is to 400 KW power at 90 r.p.m. If fs = 74 N/mm2 and internal diameter is 0.6 times the external diameter, then find both the diamers assuming the following relations Tmax= 1.35 Tmean.

#### Hollow shaft is to transmit is to 400 KW power at 90 r.p.m. If fs = 74 N/mm2 and internal diameter is 0.6 times the external diameter, then find both the diamers assuming the following relations Tmax= 1.35 Tmean.

A laminated spring 600mm long is made up of plates each being 60mm wide and 8mm thick. Fing the number of plates required to enable the spring to carry a central point load of 4000N if the permissible bending stress is 120N/mm2. Also find deflection if E=200KN/mm2.

#### Laminated spring 600mm long is made up of plates each being 60mm wide and 8mm thick. Fing the number of plates required to enable the spring to carry a central point load of 4000N if the permissible bending stress is 120N/mm2. Also find deflection if E=200KN/mm2.

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