Advance Construction Technology MCQs with answers Page - 13

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A

Admin • 833.24K Points
Coach

Q. In hand mixing …….. % more cement is added in mix.

  • (A) 30
  • (B) 40
  • (C) 10
  • (D) 20

A

Admin • 833.24K Points
Coach

Q. Concrete mixer are generally designed to run at a speed of ……….. Revolution per minute.

  • (A) 40 to 50
  • (B) 30 to 40
  • (C) 15 to 20
  • (D) 20 to 30

A

Admin • 833.24K Points
Coach

Q. For proper mixing about…………. revolution are required.

  • (A) 40 to 50
  • (B) 30 to 40
  • (C) 15 to 20
  • (D) 25 to 30

A

Admin • 833.24K Points
Coach

Q. The process of mixing, transporting, placing and compacting concrete should not take more than ……. min any case.

  • (A) 90
  • (B) 80
  • (C) 70
  • (D) 60

A

Admin • 833.24K Points
Coach

Q. Commonly use retarders is……

  • (A) Calcium sulphate
  • (B) Sugars
  • (C) Cellulose products.
  • (D) All of the above

A

Admin • 833.24K Points
Coach

Q. Inert material of a cement concrete mix, is

  • (A) water
  • (B) cement
  • (C) aggregate
  • (D) none of these

A

Admin • 833.24K Points
Coach

Q. Placing of concrete should preferably be done at a temperature of

  • (A) 0°C
  • (B) 10°C
  • (C) 20°C
  • (D) 27 ± 2°C

A

Admin • 833.24K Points
Coach

Q. The aggregate impact value of the aggregate used in

  • (A) building concrete is less than 45
  • (B) road pavement concrete is less than 30
  • (C) runway concrete is less than 30
  • (D) all the above

A

Admin • 833.24K Points
Coach

Q. On a grading curve, the gap grading is represented by

  • (A) a horizontal line
  • (B) a vertical line
  • (C) N.W. inclined line
  • (D) N.E. inclined line

A

Admin • 833.24K Points
Coach

Q. Bulking of sand is

  • (A) mixing of different sizes of sand particles
  • (B) mixing of lime with sand
  • (C) maximum water with sand
  • (D) swelling of sand when wetted

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