# Practice Test: Question Set - 01

**1.**

*P*= 4Ï€²*EI*/*L²*is the equation of Euler's crippling load if- (A) Both
the ends are fixed

- (B) Both
the ends are hinged

- (C) One
end is fixed and other end is free

- (D) One
end is fixed and other end is hinged

**2. Pick up the correct statement from the following:**

- (A) The
structural member subjected to compression and whose dimensions are small as
compared to its length, is called a stmt

- (B) The
vertical compression members are generally known as columns or stanchions

- (C) Deflection
in lateral direction of a long column, is generally known as buckling

- (D) All the
above

**3. For calculating the allowable stress of long columns Ïƒ**

_{0}= Ïƒ_{y}/*n*[1 - a (1/r)²]is the empirical formula, known as- (A) Straight
line formula

- (B) Parabolic
formula

- (C) Perry's
formula

- (D) Rankine's
formula

**4. Maximum principal stress theory for the failure of a material at elastic point, is known**

- (A) Guest's or
Trecas' theory

- (B) St. Venant's
theory

- (C) Rankine's
theory

- (D) Von Mises'
theory

**5. Pick up the correct statement from the following:**

- (A) The
moment of inertia is calculated about the axis about which bending takes place

- (B) If
tensile stress is less than axial stress, the section experiences compressive
stress

- (C) If
tensile stress is equal to axial stress, the section experiences compressive
stress

- (D) All the
above

**6. A composite beam is composed of two equal strips one of brass and other of steel. If the temperature is raised**

- (A) Steel
experiences tensile force

- (B) Brass
experiences compressive force

- (C) Composite
beam gets subjected to a couple

- (D) All the
above

**7. A shaft subjected to a bending moment**

*M*and a torque*T*, experiences- (A) Maximum
bending stress = 32

*M*/Ï€

*d*

^{3}- (B) Maximum
shear stress = 16

*T*/Ï€

*d*

^{3}- (C) Both (a) and
(b)

- (D) Neither (a)
nor (b)

**8. A two hinged parabolic arch of span**

*l*and rise*h*carries a load varying from zero at the left end to Ï‰ per unit run at the right end. The horizontal thrust is- (A)

*Ï‰l²*/4

*h*

- (B)

*Ï‰l²*/8

*h*

- (C)

*Ï‰l²*/12

*h*

- (D)

*Ï‰l²*/16

*h*

**9. The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘**

*R’*carrying- (A) A uniformly
distributed load Ï‰ per unit run over its right half span, is ⅔ Ï‰R/Ï€

- (B) A uniformly
distributed load Ï‰ per unit run over its entire span is

^{4}/

_{3 }Ï‰R/Ï€

- (C) A
distributed load varying from zero at the left end to Ï‰ per unit horizontal run
at the right end, is ⅔ Ï‰R/Ï€

- (D) All the
above

**10. Maximum strain theory for the failure of a material at the elastic limit, is known as**

- (A) Guest's
or Trecas' theory

- (B) St. Venant's
theory

- (C) Rankine's
theory

- (D) Haig's
theory

**11. Slenderness ratio of a long column, is**

- (A) Area of
cross-section divided by radius of gyration

- (B) Area
of cross-section divided by least radius of gyration

- (C) Radius
of gyration divided by area of cross-section

- (D) Length of
column divided by least radius of gyration

**12. A close coil helical spring when subjected to a moment**

*M*having its axis along the axis of the helix- (A) It is
subjected to pure bending

- (B) Its mean diameter
will decrease

- (C) Its
number of coils will increase

- (D) All the
above

**13. The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is**

- (A) 1/4

- (B) 1/2

- (C) 1

- (D) 2

**14. Maximum shear stress theory for the failure of a material at the elastic limit, is known**

- (A) Guest's or
Trecas' theory

- (B) St. Venant's
theory

- (C) Rankine's
theory

- (D) Haig's
theory

**15. A cantilever of length ‘**

*L’*is subjected to a bending moment ‘*M’*at its free end. If*EI*is the flexural rigidity of the section, the deflection of the free end, is- (A)

*ML*/

*EI*

- (B)

*ML*/2

*EI*

- (C)

*ML²*/2

*EI*

- (D)

*ML²*/3

*EI*

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