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  • Question

  • If h and h1 are the heights of a light house and the observer in a ship in metres above M S L then the horizontal distance from the ship to the light house in kilometres is


  • Options
  • A. 3.86 (h + h1)
  • B. 3.86 (h - h1)
  • C. 3.86 (h x h1)
  • D. 3.86 ? (h + h1)

  • Correct Answer
  • 3.86 (h + h1) 

    • More questions

    • 1. Safe speed (V) on a curve of radius 970 metres provided with two transition curves on Board Gauge track, is

    • Options
    • A. 112 km/hour
    • B. 122 km/hour
    • C. 132 km/hour
    • D. 142 km/hour
      • Discuss
    • 2. In flowing liquids pitot tubes are used measure

    • Options
    • A. discharge
    • B. pressure
    • C. velocity
    • D. depth.
      • Discuss
    • 3. The rail section which is not used on Indian metre gauge tracks, is

    • Options
    • A. 25 R
    • B. 30 R
    • C. 35 R
    • D. 40 R
      • Discuss
    • 4. Poisson's ratio for steel within elastic limit, ranges from

    • Options
    • A. 0.15 to 0.20
    • B. 0.25 to 0.24
    • C. 0.25 to 0.33
    • D. 0.33 to 0.35
    • E. 0.45 to 0.50
      • Discuss
    • 5. The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is upto a height of

    • Options
    • A. the effective span
    • B. 1.25 times the effective span
    • C. 1.50 times the effective span
    • D. 2.0 times the effective span
    • E. 2.5 times the effective span.
      • Discuss
    • 6. For B.G. single track, the section of the tunnel must have a width

    • Options
    • A. 4.2 m to 4.5 m
    • B. 4.5 m to 4.8 m
    • C. 4.9 m to 5.5 m
    • D. 5.5 m to 5.8 m
      • Discuss
    • 7. Distance between inner faces of the flanges, is kept

    • Options
    • A. equal to the gauge distance
    • B. slightly less than the gauge distance
    • C. slightly more than the gauge distance
    • D. none of these.
      • Discuss
    • 8. A welded rail joint is generally

    • Options
    • A. supported on a sleeper
    • B. supported on a metal plate
    • C. suspended
    • D. none of these.
      • Discuss
    • 9. The ratio of crippling loads of a column having both the ends fixed to the column having both the ends hinged, is

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 10. The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept

    • Options
    • A. 0.20 m
    • B. 1.20 m
    • C. 2.20 m
    • D. 3.20 m
    • E. 4.90 m
      • Discuss

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