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#### Â a. Hoop stress in a thin cylindrical shell is ____________

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#### Â Â i. Draw stress-strain curve for mild steel & explain in short.

#### Â Â 1. A rigid bar is suspended from two wires of equal lengths 1.75m.One wire is 1mm in diameter and made of steel, other wire of 2mm in diameter is made of brass. A load of 100 N is placed on the rigid bar such that the bar remains horizontal. If the horizontal distance between wires is 200mm, Determine

#### Hoop stress in a thin cylindrical shell is ____________

Sudden load is ___________ the gradual load.
#### Sudden load is ___________ the gradual load.

The polar moment of area of a circular section of diameter d is __________.
#### The polar moment of area of a circular section of diameter d is __________.

At the neutral axis, bending stress is ___________.
#### At the neutral axis, bending stress is ___________.

For the same area of cross â€“section, ___________ is the most strongest of all section in bending.
#### For the same area of cross â€“section, ___________ is the most strongest of all section in bending.

Eulerâ€™s buckling load is ______________.
#### Eulerâ€™s buckling load is ______________.

The torsional shear stress is __________ at the centre of shaft.
#### The torsional shear stress is __________ at the centre of shaft.

The minimum load at which the column tends to buckle is called _____________ .
#### The minimum load at which the column tends to buckle is called _____________ .

The strength of a column depends upon the ________ and its end conditions.
#### The strength of a column depends upon the ________ and its end conditions.

Close coil helical springs are used for __________ load only.
#### Close coil helical springs are used for __________ load only.

Longitudinal stress in a thin cylindrical shell is double the circumferential stress. ( True / False)

Bending stress is maximum at the outermost fibres. ( True / False)
Torque in a shaft is produced due to a couple acting on it. ( True / False)

A live load is one which varies continuously. ( True / False)

While testing a ductile material in tension necking start at upper yield points. ( True / False
#### Stress-strain curve for mild steel & explain in short.

Define strain energy, proof resilience & modules of resilience.
#### Strain energy, proof resilience & modules of resilience.

Classify beam with diagram & define point of contraflexure.
#### Classify beam with diagram & define point of contraflexure.

Â State the assumptions in the theory of simple bending.
#### Assumptions in the theory of simple bending.

Classify columns & state factors on which strength of column depends.
#### Classify columns & state factors on which strength of column depends.

State the function of springs & Name different types of springs.
#### Function of springs & Name different types of springs.

A solid shaft is to transmit a torque of 50K-N. If the shear stress is not exceed 56 N/mm2.Find the minimum diameter of the shaft.
#### Solid shaft is to transmit a torque of 50K-N. If the shear stress is not exceed 56 N/mm2.Find the minimum diameter of the shaft.

Define moment of inertia, section modulus &radius of gyration.
#### Rigid bar is suspended from two wires of equal lengths 1.75m.One wire is 1mm in diameter and made of steel, other wire of 2mm in diameter is made of brass. A load of 100 N is placed on the rigid bar such that the bar remains horizontal. If the horizontal distance between wires is 200mm, Determine

A cantilever 1.5 m long carries a u.d.l of 2kN/m over a length of 1.25 m from the free end. It also carries a point load of 3KN at a distance of 0.5 m from the free end. Draw the S.F &B.M diagrams for the given beam.
#### Cantilever 1.5 m long carries a u.d.l of 2kN/m over a length of 1.25 m from the free end. It also carries a point load of 3KN at a distance of 0.5 m from the free end. Draw the S.F &B.M diagrams for the given beam.

A closed coil helical springh whose spring index is 8, absorbs 50 N-m of energy when compressed for 50 mm. If the numbers of coil are 10, then calculate.
#### Closed coil helical springh whose spring index is 8, absorbs 50 N-m of energy when compressed for 50 mm. If the numbers of coil are 10, then calculate.

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