Concrete Technology MCQs with answers Page - 62

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Admin • 833.24K Points
Coach

Q. When shear stress exceeds the permissible limit in a slab, then it is reduced by

  • (A) increasing the depth
  • (B) providing shear reinforcement
  • (C) using high strength steel
  • (D) using thinner bars but more in number

A

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Q. The diameter of ties in a column should be

  • (A) more than or equal to one fourth of diameter of main bar
  • (B) more than or equal to 5 mm
  • (C) more than 5 mm but less than one-fourth of diameter of main bar
  • (D) more than 5 mm and also more than one-fourth of diameter of main bar

A

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Q. In counterfort retaining walls, the main reinforcement in the stem at support is

  • (A) not provided
  • (B) provided only on inner face
  • (C) provided only on front face
  • (D) provided both on inner and front faces

A

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Q. Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

  • (A) deflect downward
  • (B) deflect upward
  • (C) deflect downward or upward
  • (D) none of the above

A

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Q. The purpose of reinforcement in pre-stressed concrete is

  • (A) to provide adequate bond stress
  • (B) to resist tensile stresses
  • (C) to impart initial compressive stress in concrete
  • (D) all of the above

A

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Q. Due to circumferential action of the spiral in a spirally reinforced column

  • (A) capacity of column is decreased
  • (B) ductility of column reduces
  • (C) capacity of column is decreased but ductility of column increases
  • (D) both the capacity of column and ductility of column increase

A

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Q. For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be

  • (A) 0.75 - 0.80
  • (B) 0.80 - 0.85
  • (C) 0.85 - 0.92
  • (D) above 0.92

A

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Q. Workability of concrete is directly proportional to

  • (A) aggregate cement ratio
  • (B) time of transit
  • (C) grading of the aggregate
  • (D) all of above

A

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Q. Critical section for shear in case of flat slabs is at a distance of

  • (A) effective depth of slab from periphery of column/drop panel
  • (B) d/2 from periphery of column/capital/ drop panel
  • (C) at the drop panel of slab
  • (D) at the periphery of column

A

Admin • 833.24K Points
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Q. For road pavements, the cement generally used, is

  • (A) ordinary portland cement
  • (B) rapid hardening cement
  • (C) low heat cement
  • (D) blast furnace slag cement

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