Concrete Technology MCQs with answers Page - 51

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Q. The practical utility of concrete technology for civil engineers is to ?

  • (A) enable them to know how to stock properly the materials required for concrete
  • (B) enable them to perform different tests concerning concrete
  • (C) make them conversant with the fundamental principles of concrete
  • (D) all of the above

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Q. The concrete mix is said to be workable if it has ?

  • (A) compatibility
  • (B) movability
  • (C) stability
  • (D) all of these

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Q. In transportation of concrete by pumps ?

  • (A) the slump should not be less than 50 mm and more than 80 mm
  • (B) the water cement ratio should remain between 0.5 to 0.65
  • (C) the number of bends in a pipe line should be as small as possible
  • (D) all of the above

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Q. The presence of lime in cement ?

  • (A) makes the cement sound
  • (B) does not provides strength to the cement
  • (C) lowers the clinkering temperature
  • (D) all of these

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Q. The workability of concrete is expressed by ?

  • (A) water-cement ratio
  • (B) compaction factor
  • (C) slump value
  • (D) both (a) and (b)

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Q. In order to prepare a test specimen, it is necessary to ?

  • (A) mix the cement and fine aggregate (sand) by dry hand
  • (B) mix the coarse aggregate
  • (C) mix water to the cement, fine aggregate and coarse aggregates
  • (D) all of the above

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Q. Which of the following statement is correct ?

  • (A) Duff Abram's law is valid only when the concrete is of workable plasticity
  • (B) If the water-cement ratio is less, the strength of concrete will be less
  • (C) The strength of concrete decreases with age
  • (D) A rich mix of concrete provides low strength than a lean mix

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Q. Rolled steel T-sections are used ?

  • (A) to transmit bracket loads to the columns
  • (B) with flat strips to connect plates in the steel rectangular tanks
  • (C) in both (a) and (b)
  • (D) none of these

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Q. The working shear stress on gross area of power-driven field rivets, as per IS: 800-1984, is ?

  • (A) 78.5 N/mm² member
  • (B) 94.5 N/mm²
  • (C) 102.5 N/mm²
  • (D) 157.5 N/mm²

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Q. PERT stands for ?

  • (A) Programme Estimation and Reporting Technique
  • (B) Process Estimation and Review Technique
  • (C) Programme Evaluation and Review Technique
  • (D) Planning Estimation and Resulting Technique

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