Mechanical Engineering · all questions

Strength Of Materials
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Q401

The springs in brakes and clutches are used to

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Q402

In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is

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Q403

The stress developed in a material at breaking point in extension is called

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Q404

For steel, the ultimate strength in shear as compared to in tension is nearly

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Q405

A tensile test is performed on a mild steel round bar. Its diameter after fracture will

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Q406

The buckling load for a given material depends on

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Q407

The Rankine's constant for a mild steel column with both ends hinged is

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Q408

During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm². Ultimate tensile strength of specimen is

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Q409

A simply supported beam 'A' of length ‘l’, breadth ‘b’ and depth ‘d’ carries a central load ‘W’. Another beam 'B' of the same dimensions carries a central load equal to 2W. The deflection of beam 'B' will be __________ as that of beam 'A'.

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Q410

Two shafts 'A' and 'B' are made of same material. The shaft 'A' is of diameter D and shaft 'B' is of diameter

\frac{D}{2} .

The strength of shaft 'B' is _________ as that of shaft 'A'

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Q411

When a circular bar tapering uniformly from diameter d₁, at one end to diameter d₂ at the other end, is subjected to an increase in temperature (t), then the thermal stress induced is (where

α

= Coefficient of linear expansion and E = Modulus of elasticity for the bar material)

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Q412

In a beam subjected to pure bending, the intensity of stress in any fibre is _________ the distance of the fibre from the neutral axis.

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Q413

When a beam is subjected to a bending moment, the strain in a layer is __________ the distance from the neutral axis.

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Q414

When a beam is subjected to bending moment, the stress at any point is __________ the distance of the point from the neutral axis.

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Q415

The strength of the shaft is judged by the_____________.

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Q416

According to Euler's column theory, the crippling load of a column is given by

p = \frac{π ^{2} E I}{C l ^{2}} .

In the Euler's formula, the value of C for a column with one end fixed and the other end free, is

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Q417

A pressure vessel is said to be a thick shell, when

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Q418

The stress necessary to initiate yielding is

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Q419

In the below figure, the plastic range occurs
Strength of Materials mcq question image

Strength of Materials mcq question image

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Q420

A thin cylindrical shell of diameter (d), length (

l

) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to hoop strain is

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