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MCQs

Total Questions : 81 | Page 5 of 9 pages
Question 41. The stresses in rigid pavement are due to ________
  1.    restrained temperature only
  2.    external loads only
  3.    frost action only
  4.    restrained temperature, external loads and frost action
 Discuss Question
Answer: Option D. -> restrained temperature, external loads and frost action
Answer: (d).restrained temperature, external loads and frost action
Question 42. If there is no friction between the slab and the sub-grade, then there are ______ in slab.
  1.    no stresses
  2.    small number of stresses
  3.    large number of stresses
  4.    temperature gradients
 Discuss Question
Answer: Option A. -> no stresses
Answer: (a).no stresses
Question 43. The temperature in general at the bottom of the slab is __________
  1.    constant
  2.    variant
  3.    constant during the days only
  4.    constant during the nights only
 Discuss Question
Answer: Option A. -> constant
Answer: (a).constant
Question 44. In a day, the top surface of rigid pavement ______ than the bottom of slab.
  1.    expands
  2.    contracts
  3.    remains stable
  4.    shows no changes
 Discuss Question
Answer: Option A. -> expands
Answer: (a).expands
Question 45. During expansion the under-side of the slab is subjected to _________
  1.    tensile stress
  2.    shearing stress
  3.    compressive stress
  4.    bulk stress
 Discuss Question
Answer: Option C. -> compressive stress
Answer: (c).compressive stress
Question 46. During contraction, _________ are induced in the under-side of the slab.
  1.    tensile stress
  2.    shearing stress
  3.    compressive stress
  4.    bulk stress
 Discuss Question
Answer: Option A. -> tensile stress
Answer: (a).tensile stress
Question 47. The critical stress condition in slab occurs when __________
  1.    corners remain unwrapped
  2.    corners are wrapped upward
  3.    corners are wrapped downward
  4.    corners are wrapped laterally
 Discuss Question
Answer: Option C. -> corners are wrapped downward
Answer: (c).corners are wrapped downward
Question 48. The critical stress condition in slab occurs when __________
  1.    load is applied at exterior of the slab
  2.    load is applied at exterior and interior of the slab
  3.    no load is applied
  4.    load is applied at interior of the slab
 Discuss Question
Answer: Option D. -> load is applied at interior of the slab
Answer: (d).load is applied at interior of the slab
Question 49. The critical stress condition in slab is when _________
  1.    temperature and load stresses are multiplicative
  2.    temperature and load stresses are additive
  3.    temperature and load stresses oppose each other
  4.    critical stress condition does not occur in slab
 Discuss Question
Answer: Option B. -> temperature and load stresses are additive
Answer: (b).temperature and load stresses are additive
Question 50. During the clear, cool night followed by a hot sunny day, the edges and corners of slab will ____________
  1.    wrap downward
  2.    wrap upward
  3.    wrap upwards and downwards
  4.    wrap laterally
 Discuss Question
Answer: Option B. -> wrap upward
Answer: (b).wrap upward

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