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  • Question

  • The horizontal angles from the boat between A and B and B and C, the stations on the shore are respectively ?1 and ?2. The distances AB = L1 and BC = L2. For calculating the angle ?2 at C between the boat and station B is obtained by using the following formula: where (? is horizontal angle between A and C at B).


  • Options
  • A. The horizontal angles from the boat between A and B and B and C, the stations on the shore are respe
  • B. ?t tan ?2 = 360° - (?1 + ?2 + ?) = ?
  • C. The horizontal angles from the boat between A and B and B and C, the stations on the shore are respe
  • D. all the above.

  • Correct Answer
  • all the above. 

    • More questions

    • 1. To have greatest coverage of the area, the type of photography used, is

    • Options
    • A. high oblique
    • B. low oblique
    • C. vertical
    • D. none of these.
      • Discuss
    • 2. Excessive fluoride in drinking water causes

    • Options
    • A. Alzheimer's disease
    • B. Mottling of teeth and embrittlement of bones
    • C. Methemoglobinemia
    • D. Skin cancer
      • Discuss
    • 3. Snowcrete is one of the patent forms of

    • Options
    • A. distempers
    • B. water proof cement paints
    • C. enamel paints
    • D. cellulose paints.
      • Discuss
    • 4. To achieve best performance, the type of switch preferred to, is

    • Options
    • A. undercut switch
    • B. straight-cut switch
    • C. overriding switch
    • D. both (a) and (b)
    • E. none of these.
      • Discuss
    • 5. The standard dimensions of a wooden sleeper for a B.G. railway track are

    • Options
    • A. 2.74 m x 25 cm x 13 cm
    • B. 1.83 m x 20 cm x 11 cm
    • C. 1.52 m x 15 cm x 10 cm
    • D. 1.75 cm x 20 cm x 12 cm
    • E. none of these.
      • Discuss
    • 6. For preparing porcelains, the clay should be

    • Options
    • A. sufficiently pure
    • B. of high degree of tanacity
    • C. of good plasticity
    • D. All the above.
      • Discuss
    • 7. If D is the distance between the parallel sidings and ? is the angle of crossing, the distance between the noses of crossing measured parallel to the main track, is

    • Options
    • A. D tan ?
    • B. D sec ?
    • C. D cosec ?
    • D. D cot ?
      • Discuss
    • 8. If the difference in elevation of an edge of the pavement 9 m wide and its crown is 15 cm, the camber of the pavement, is

    • Options
    • A. 1 in 60
    • B. 1 in 45
    • C. 1 in 30
    • D. 1 in 15
    • E. 1 in 7.5
      • Discuss
    • 9. The loose pockets in soil mass can be bridged safely by providing a raft foundation provided the soft area is smaller than

    • Options
    • A. the column spacing
    • B. one-third the column spacing
    • C. half the column spacing
    • D. three-fourth the column spacing
    • E. none of these.
      • Discuss
    • 10. The moment diagram for a cantilever whose free end is subjected to a bending moment, will be a

    • Options
    • A. triangle
    • B. rectangle
    • C. parabola
    • D. cubic parabola.
      • Discuss

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