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MCQs

Total Questions : 1107 | Page 1 of 111 pages
Question 1.

A
circular plate 100 mm diameter is welded to another plate by means of 6
mm fillet weld. If the permissible shearing stress in the weld equals
10 kg/mm2, then the greatest twisting moment that can be resisted by the weld will be


  1.    424 `pi` kg.m
  2.    300`pi` kg.m
  3.    212 `pi` kg.m
  4.    60 `pi` kg.m
 Discuss Question
Answer: Option C. -> 212 `pi` kg.m


Question 2.
 

A steel cable of 2 cm diameter is used to lift a load of 500Ï€ kg. Given that, E = 2 x 106 kg/cm2 and the length of the cable is 10 m, the elongation of the cable due to the load will be


  1.    0.5 cm
  2.    0.25 cm
  3.    1 cm
  4.    1/`pi` cm
 Discuss Question
Answer: Option B. -> 0.25 cm


Question 3.
A cohesionless soil having an angle of shearing resistance of `varphi`, is standing at a slope angle of i. The factor of safety of the slope is tan i



  1.    `(tan i)/(tan varphi)`
  2.    `tan i - tan varphi `
  3.    `(tan varphi)/(tan i)`
  4.    ` tan varphi - tan i`
 Discuss Question
Answer: Option C. -> `(tan varphi)/(tan i)`


Question 4.

What is the ratio of maximum shear stress to average shear stress for a circular section ?




  1.    2
  2.    `3/2`
  3.    `4/3`
  4.    `3/4`
 Discuss Question
Answer: Option C. -> `4/3`


Question 5.
A simply supported continuous beam with two equal spans carries uniformly distributed load w on entire length of the beam. If each span has a length L, the bending moment at the central support is



  1.    `(WL^2)/(12)`
  2.    `(WL^2)/(8)`
  3.    `(WL^2)/(4)`
  4.    `(WL^2)/(2)`
 Discuss Question
Answer: Option B. -> `(WL^2)/(8)`


Question 6.
A section of a solid circular shaft with diameter D is subjected to bending moment 'M' and torque (T). The expression for maximum principal stress at the section is



  1.    `(2M+T)/(pi D^3)`
  2.    `(16pi)/(D^3) (M - sqrt(M^2 - T^2))`
  3.    `(16pi)/(D^3) (sqrt(M^2 - T^2))`
  4.    `(16pi)/(D^3) (M+sqrt(M^2 - T^2))`
 Discuss Question
Answer: Option D. -> `(16pi)/(D^3) (M+sqrt(M^2 - T^2))`


Question 7.
The shape factor for a solid circular section of diameter D is equal to



  1.    `(D)/(2pi)`
  2.    `(15)/(2pi)`
  3.    `(16)/(3pi)`
  4.    `(piD)/(8)`
 Discuss Question
Answer: Option C. -> `(16)/(3pi)`


Question 8.

If an element is subjected to pure shearing stress Txy then the maximum principal stress is equal to



  1.    `2T_(xy)`
  2.    `T_(xy)`/2
  3.    `T_(xy)`
  4.    `sqrt(1-(T_(xy))^2)`
 Discuss Question
Answer: Option C. -> `T_(xy)`


Question 9.

Given that for a soil deposit,
K0 = earth pressure coefficient at rest,
Ka = active earth pressure coefficient,
Kp = passive earth pressure coefficient and
u = Poisson's ratio, the value of (1 - `mu`) is given by


  1.    `K_a`/`K_p`
  2.    `K_o`/`K_a`
  3.    `K_p`/`K_a`
  4.    1/`K_o`
 Discuss Question
Answer: Option D. -> 1/`K_o`


Question 10.
 

In a particular material, if the modulus of rigidity is equal to the bulk modulus, then the Poisson's ratio will be


  1.    `1/8`
  2.    `1/4`
  3.    `1/2`
  4.    1
 Discuss Question
Answer: Option A. -> `1/8`


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