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Home ‣ Civil Engineering ‣ UPSC Civil Service Exam Questions See What Others Are Saying!
  • Question

  • A plot of land 60°m x 20 m is measure steel tape. If the standard error of length width measurements is taken as ± 1 cm, the standard error of the area of the plot be


  • Options
  • A. ± 0.1414 m2
  • B. ± 0.566 m2
  • C. ± 0.632 m2
  • D. ± 0.8484 m2

  • Correct Answer
  • ± 0.632 m2 

    • More questions

    • 1. If the modular ratio is m, steel ratio is r and overall depth of a beam is d, the depth of the critical neutral axis of the beam, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss
    • 2. For computing the run off volumes of large areas, number of infiltrations used are

    • Options
    • A. 2
    • B. 3
    • C. 4
    • D. 5
      • Discuss
    • 3. Keeping the instrument height as 1 m, length of staff 4 m, the up gradient of the ground 1 in 10, the sight on the up slope must be less than

    • Options
    • A. 25 cm
    • B. 20 m
    • C. 45 m
    • D. 10 m
      • Discuss
    • 4. The type of pointing in which upper side of mortar joints is kept about 12 mm inside the face of the masonry and bottom is kept flushed with face of wall, is

    • Options
    • A. truck pointing
    • B. recessed pointing
    • C. struck pointing
    • D. grooved pointing.
      • Discuss
    • 5. A bearing of a line is also known as

    • Options
    • A. magnetic bearing
    • B. true bearing
    • C. azimuth
    • D. reduced bearing
      • Discuss
    • 6. For the construction of buildings, the subheads of the estimate are

    • Options
    • A. Earthwork, Concrete work, Brick work
    • B. Brickwork, Stone work, Roofing
    • C. Brickwork Flooring, Wood work, Steel work
    • D. Plastering or pointing, finishing, water supply and sanitary work
    • E. All the above.
      • Discuss
    • 7. Pick up the incorrect statement from the following:

    • Options
    • A. The degree of grinding of cement, is called fineness
    • B. The process of changing cement paste into hard mass, is known as setting of cement
    • C. The phenomenon by virtue of which cement does not allow transmission of sound, is known as soundness of cement
    • D. The heat generated during chemical reaction of cement with water, is known as heat of hydration
    • E. None of these.
      • Discuss
    • 8. To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls

    • Options
    • A. of R.C.C. or steel plate 8 cm thick
    • B. of height l/3rd to l/4th the depth of water in the main canal
    • C. spaced at interval of times their heights
    • D. extending about one metre beyond a line drawn at an inclination of 2 : 1 to the axis of main canal
    • E. all the above.
      • Discuss
    • 9. The factor to be considered for the source of city water supply, is

    • Options
    • A. quantity and quality of the available water
    • B. elevation of the source of water
    • C. general terrain intervening the area
    • D. all the above.
      • Discuss
    • 10. The live load to be considered for an inaccessible roof, is

    • Options
    • A. Nil
    • B. 75 kg/m2
    • C. 150 kg/cm2
    • D. 200 kg/m2
      • Discuss

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