# Practice Test: Question Set - 09

**1. Proof resilience per material is known as**

- (A) Resilience

- (B) Proof resilience

- (C) Modulus of resilience

- (D) Toughness

**2. The capacity of a strained body for doing work on the removal of the straining force, is called**

- (A) Strain
energy

- (B) Resilience

- (C) Proof
resilience

- (D) Impact
energy

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

- (A) More

- (B) Less

- (C) Same

- (D) More/less depending
on composition

**4. A column of length (**

*l*) with both ends fixed may be considered as equivalent to a column of length __________ with both ends hinged.- (A)

*l*/8

- (B)

*l*/4

- (C)

*l*/2

- (D)

*l*

**5. If the depth is kept constant for a beam of uniform strength, then its width will vary in proportional to**

- (A) Bending moment (i.e. M)

- (B) Bending moment² (i.e. M²)

- (C) Bending moment³ (i.e. M³)

- (D) Bending moment⁴ (i.e. M⁴)

**6. In a tensile test, near the elastic limit zone, the**

- (A) Tensile strain increases more quickly

- (B) Tensile strain
decreases more quickly

- (C) Tensile strain
increases in proportion to the stress

- (D) Tensile strain
decreases in proportion to the stress

**7. The pull required to crush the rivet per pitch length is**

- (A)

*p*

*.t.σ*

_{t}- (B)

*d*

*.t.σ*

_{c}- (C)

*π/*4

*×*

*d²*×

*σ*

_{t}- (D)

*π/*4 ×

*d²*×

*σ*

_{c}**8. The total strain energy stored in a body is termed as**

- (A) Resilience

- (B) Proof resilience

- (C) Modulus of resilience

- (D) Toughness

**9. The extension of a circular bar tapering uniformly from diameter**

*d₁*at one end to diameter*d₂*at the other end and subjected to an axial pull of ‘*P’*is given by- (A)

*δl =*4

*PE/*

*πl²*

- (B)

*δl =*4

*πld²/PE*

- (C)

*δl =*4

*Pl/*

*πEd₁d₂*

- (D)

*δl =*4

*PlE/*

*πd₁d₂*

**10. The maximum bending moment for the beam shown in the below figure, is**

- (A)

*wl²/*3

*√*3

- (B)

*wl²/*6

*√*3

- (C)

*wl²/*9

*√*3

- (D)

*wl²/*12

*√*3

**11. Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in**

- (A) Tension

- (B) Compression

- (C) Bearing

- (D) Any one of the above

**12. The pull required to tear off the plate per pitch length is (where**

*p*= Pitch of rivets,*t*= Thickness of plates, and*σ*,_{t}*τ*and*σ*= Permissible tensile, shearing and crushing stresses respectively)_{c}

- (A)

*(p -*2

*d*

*) t*×

*σ*

_{c}- (B)

*(p - d) t*×

*τ*

- (C)

*(p - d) t*×

*σ*

_{t}- (D)

*(*2

*p - d*

*) t*×

*σ*

_{t}**13. In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be**

- (A) Increase key length

- (B) Increase key depth

- (C) Increase key width

- (D) Double all the
dimensions

**14. In the below figure, curve**

*D*represents_________.- (A) Mild steel

- (B) Cast iron

- (C) Concrete

- (D) Bone of
these

**15. The bending moment of a cantilever beam of length ‘**

*l’*and carrying a uniformly distributed load of ‘*w’*per unit length is __________ at the fixed end.- (A)

*wl*/4

- (B)

*wl*/2

- (C)

*wl*

- (D)

*wl²*/2

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