logo

CuriousTab

CuriousTab

Discussion

Home ‣ Civil Engineering ‣ Surveying Comments
  • Question

  • An ideal transition curve is


  • Options
  • A. cubic parabola
  • B. cubic spiral
  • C. clothoid spiral
  • D. true spiral.

  • Correct Answer
  • clothoid spiral 

    Explanation
    IRC recommends Spiral or clothoid as the ideal transition curve due to following reasons:

    1. It satisfies that rate of change of centrifugal acceleration is constant i.e., Ls.R = constant. Where Ls = length of transition curve R = radius of curve.

    2. The calculation and field implementation of spiral curve is simple and easy.

    3. It enhances aesthetics also.

    Surveying problems

    Search Results

    • 1. The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known

    • Options
    • A. declination
    • B. azimuth
    • C. dip
    • D. bearing.
      • Discuss
    • 2. Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:

    • Options
    • A. absence of sun light
    • B. dampness
    • C. presence of sap
    • D. stagnant air
    • E. All the above,
      • Discuss
    • 3. Most commonly used solvent in oil paints, is

    • Options
    • A. petroleum
    • B. spirit
    • C. coaltar
    • D. turpentine.
      • Discuss
    • 4. Pick up the correct statement from the following:

    • Options
    • A. Styrene resin is produced from ethylene which is made from petroleum
    • B. Styrene resin is light in weight
    • C. Styrene resin transmits ultraviolet waves of light
    • D. Styrene resin is used to manufacture utensils which are unaffected by chemicals
    • E. All the above.
      • Discuss
    • 5. Pick up the correct statement from the following:

    • Options
    • A. The free quartz suddenly expands at a temperature lower than 600°C
    • B. The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2
    • C. The sand stone with silicates resist a fire in a better way
    • D. The argillaceous stone though poor in strength can resist fire quite weak
    • E. All the above.
      • Discuss
    • 6. In levelling operation

    • Options
    • A. when the instrument is being shifted, the staff must not be moved
    • B. when the staff is being carried forward, the instrument must remain stationary
    • C. both (a) and (b)
    • D. neither (a) nor (b).
      • Discuss
    • 7. Pantagraph is used for

    • Options
    • A. measuring distances
    • B. measuring areas
    • C. enlarging or reducing plans
    • D. setting out right angles
      • Discuss
    • 8. The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every

    • Options
    • A. 100 sq. km of area
    • B. 150 sq. km of area
    • C. 200 sq. km of area
    • D. none of these.
      • Discuss
    • 9. Centering error of a theodolite produces an error

    • Options
    • A. in all angles equally
    • B. which does not vary with the direction or pointing
    • C. which varies with the direction of pointing and inversely with the length of sight
    • D. none of these.
      • Discuss
    • 10. Let angular value of one graduation of a tube of length x be ? seconds and R be the radius of its internal curved surface, then

    • Options
    • A.
    • B.
    • C.
    • D. .
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.