# Practice Test: Question Set - 19

**1. According to Euler's column theory, the crippling load for a column length (**

*l*) hinged at both ends, is- (A)

*π²EI/l²*

- (B)

*π²EI/*4

*l²*

- (C) 4

*π²EI/l²*

- (D) 2

*π²EI/l²*

**2. 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- (A)

*(m - 2)/(2m - 1)*

- (B)

*(2m - 1)/(m - 2)*

- (C)

*(m - 2)/(2m*+

*1)*

- (D)

*(2m*+

*1)/(m - 2)*

**3. Young's modulus may be defined as the ratio of**

- (A) Linear
stress to lateral strain

- (B) Lateral
strain to linear strain

- (C) Linear
stress to linear strain

- (D) Shear
stress to shear strain

**4. The maximum bending moment for the beam shown in the below figure, lies at a distance of ________ from the end**

*B*.- (A)

*l*

*/2*

- (B)

*l*

*/3*

- (C)

*l/√2*

- (D)

*l/√3*

**5. Two closely-coiled helical springs '**

*A*' and '*B*' are equal in all respects but the number of turns of spring '*A*' is double that of spring '*B*'. The stiffness of spring '*A*' will be __________ that of spring '*B*'.- (A) One-sixteenth

- (B) One-eighth

- (C) One-fourth

- (D) One-half

**6. The bending moment on a section is maximum where shear force is**

- (A) Minimum

- (B) Maximum

- (C) Changing
sign

- (D) Zero

**7. The stress developed in the material without any permanent set is called**

- (A) Elastic
limit

- (B) Yield stress

- (C) Ultimate
stress

- (D) Breaking
stress

**8. Two closely coiled helical springs '**

*A*' and '*B*' are equal in all respects but the diameter of wire of spring '*A*' is double that of spring '*B*' The stiffness of spring '*B*' will be __________ that of spring '*A*'- (A) One-sixteenth

- (B) One-eighth

- (C) One-fourth

- (D) One-half

**9. In a riveted joint, when the number of rivets decreases from the inner most row to outer most row, the joint is said to be**

- (A) Chain
riveted

- (B) Zig-zag
riveted

- (C) Diamond
riveted

- (D) None of
these

**10. The polar modulus for a hollow shaft of outer diameter (**

*D*) and inner diameter (*d*) is- (A)

*(π/4)*×

*(D² - d²)/D*

- (B)

*(π/16)*×

*(D*

^{3}- d^{3})/D- (C)

*(π/16)*×

*(D⁴ - d⁴)/D*

- (D)

*(π/32)*×

*(D⁴ - d⁴)/D*

**11. A leaf spring is supported at the**

- (A) Ends
and loaded at the center

- (B) Center and loaded at the ends

- (C) Ends and
loaded anywhere

- (D) Center and loaded anywhere

**12. The assumption made in the theory of the reinforced cement concrete beam is that**

- (A) All the
tensile stresses are taken up by the steel reinforcement only

- (B) There is a
sufficient bond between steel and concrete

- (C) The steel
and concrete are stressed within its elastic limit

- (D) All
of the above

**13. The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.**

- (A) Equal to

- (B) Less than

- (C) More
than

- (D) None of
these

**14. The neutral axis of the cross-section of a beam is that axis at which the bending stress is**

- (A) Zero

- (B) Minimum

- (C) Maximum

- (D) Infinity

**15. When a thin cylindrical shell is subjected to an internal pressure, there will be**

- (A) A decrease
in diameter and length of the shell

- (B) An
increase in diameter and decrease in length of the shell

- (C) A decrease
in diameter and increase in length of the shell

- (D) An increase
in diameter and length of the shell

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