# Online Mechanical Engineering Test - Strength of Materials Test 2

Instruction:

- This is a FREE online test. Beware of scammers who ask for money to attend this test.
- Total number of questions:
**20**. - Time allotted:
**30**minutes. - Each question carries 1 mark; there are no negative marks.
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- All the best!

#### Marks : 2/20

Total number of questions

20

Number of answered questions

0

Number of unanswered questions

20

##### Test Review : View answers and explanation for this test.

1.

Strain energy is the

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2.

Resilience is the

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3.

The stress induced in a body, when suddenly loaded, is __________ the stress induced when the same load is applied gradually.

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4.

When a rectangular beam is loaded transversely, the maximum compressive stress is developed on the

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5.

If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is

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6.

The stress at which the extension of the material takes place more quickly as compared to the increase in load, is called

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7.

The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σ

*and σ*_{x}*) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by*_{y}Your Answer: Option

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8.

The bending moment in the centre of a simply supported beam carrying a uniformly distributed load of

*w*per unit length isYour Answer: Option

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9.

When a closely-coiled helical spring is subjected to an axial load, it is said to be under

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10.

The unit of modulus of elasticity is same as those of

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11.

The horizontal thrust offered by the retaining wall on the retained material is (where

*w*= Specific weight of the retained material,*h*= height of retaining wall, and (φ) = Angle of repose of the retained earth)Your Answer: Option

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12.

The bending moment at a section tends to bend or deflect the beam and the internal stresses resist its bending. The resistance offered by the internal stresses, to the bending, is called

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13.

Poisson's ratio is the ratio of linear stein to the volumetric strain.

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14.

The bending moment at the free end of a cantilever beam is

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15.

The lower layer of the beam as shown in the below figure, will be

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16.

For the two shafts connected in parallel and subjected to twisting moment, the angle of twist of each shaft will be same.

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17.

If percentage elongation of a certain specimen made of a material '

*A*' under tensile test is 30% and the percentage elongation of a specimen with same dimensions made of another material '*B*' is 40%, then material '*B*' is more ductile than material '*A*'.Your Answer: Option

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18.

The length of a conical bar is

*l*, diameter of base is*d*and weight per unit volume is*w*. It is fixed at its upper end and hanging freely. The elongation of the bar under the action of its own weight will beYour Answer: Option

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19.

The section modulus of a circular section about an axis through its C.G., is

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20.

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

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