# Practice Test: Question Set - 16

**1. In the below figure, __________ represents glass.**

- (A) Curve

*A*

- (B) Curve

*B*

- (C) Curve

*C*

- (D) Curve

*D*

**2. Hook's law holds good up to**

- (A) Yield point

- (B) Elastic
limit

- (C) Plastic
limit

- (D) Breaking
point

**3. A thin spherical shell of diameter (**

*d*) and thickness (*t*) is subjected to an internal pressure (*p*). The stress in the shell material is- (A)

*pd*/

*t*

- (B)

*pd*/2

*t*

- (C)

*pd*/4

*t*

- (D)

*pd*/8

*t*

**4. Poisson's ratio is defined as the ratio of**

- (A) Longitudinal stress and longitudinal strain

- (B) Longitudinal stress and lateral stress

- (C) Lateral stress and
longitudinal stress

- (D) Lateral stress and
lateral strain

**5. The rectangular beam '**

*A*' has length*l*, width*b*and depth*d*. Another beam '*B*' has the same length and width but depth is double that of '*A*'. The elastic strength of beam*B*will be __________ as compared to beam*A*.- (A) Same

- (B) Double

- (C) Four times

- (D) Six times

**6. The value of Poisson's ratio for cast iron is**

- (A) 0.1 to 0.2

- (B) 0.23 to 0.27

- (C) 0.25 to 0.33

- (D) 0.4 to 0.6

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

*p*= Ï€²*EI*/*Cl²*. In the Euler's formula, the value of*C*for a column with one end fixed and the other end free, is- (A) 1/2

- (B) 1

- (C) 2

- (D) 4

**8. The elasticity of various materials is controlled by its**

- (A) Ultimate tensile
stress

- (B) Proof stress

- (C) Stress at yield point

- (D) Stress at elastic limit

**9. A simply supported beam of length ‘**

*l’*carries a point load ‘*W’*at a point*C*as shown in the below figure. The maximum deflection lies at- (A) Point

*A*

- (B) Point

*B*

- (C) Point

*C*

- (D) Between
points

*B*and

*C*

**10. The shear force diagram for a cantilever beam of length**

*l*and carrying a gradually varying load from zero at free end and*w*per unit length at the fixed end is a- (A) Horizontal
straight line

- (B) Vertical
straight line

- (C) Inclined
line

- (D) Parabolic
curve

**11. The maximum shear stress in a thin cylindrical shell subjected to internal pressure '**

*p'*is

- (A)

*pd*/

*t*

- (B)

*pd*/2

*t*

- (C) pd/4

*t*

- (D)

*pd*/8

*t*

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

- (A) Equal to

- (B) Directly
proportional to

- (C) Inversely
proportional to

- (D) Independent
of

**13. In a tensile test, when the material is stressed beyond elastic limit, the tensile strain __________ as compared to the stress.**

- (A) Decreases slowly

- (B) Increases
slowly

- (C) Decreases
more quickly

- (D) Increases
more quickly

**14. A fixed beam is one which is fixed at _________.**

- (A) One of its
ends

- (B) Both of its
ends

- (C) The middle

- (D) None of
these

**15. If the modulus of elasticity for a given material is twice its modulus of rigidity, then bulk modulus is equal to**

- (A) 2

*C*

- (B) 3

*C*

- (C) 2C/3

- (D) 3C/2

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