Practice Test: Question Set - 01
1. P = 4π² 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 σ0 = σy/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 = 32M/πd3
- (B) Maximum
shear stress = 16 T/πd3
- (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 ω per unit run at the right end. The horizontal thrust is
- (A) ωl²/4h
- (B) ωl²/8h
- (C) ωl²/12h
- (D) ωl²/16h
9. The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying
- (A) A uniformly
distributed load ω per unit run over its right half span, is ⅔ ωR/π
- (B) A uniformly
distributed load ω per unit run over its entire span is 4/3
ωR/π
- (C) A
distributed load varying from zero at the left end to ω per unit horizontal run
at the right end, is ⅔ ωR/π
- (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/2EI
- (C) ML²/2EI
- (D) ML²/3EI
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