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  • Question

  • Spring tides are caused when


  • Options
  • A. sun and moon are in line with earth
  • B. solar tidal force acts opposite to lunar tidal force
  • C. solar tidal force and lunar tidal force both coincide
  • D. none of these.

  • Correct Answer
  • solar tidal force and lunar tidal force both coincide 

    • Advanced Surveying problems

    Search Results

    • 1. The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as

    • Options
    • A. ground principal point
    • B. ground plumb point
    • C. iso-centre
    • D. perspective centre.
      • Discuss
    • 2. The main object of the astronomer to obtain

    • Options
    • A. astronomical latitude
    • B. astronomical longitude
    • C. astronomical bearing
    • D. all of these.
      • Discuss
    • 3. The flying height of the camera is 1, 000 m above mean ground level, the distance of the top of a Minar from a nadir point is 10 cm and the relief displacement of Minar is 7.2 mm. The height of the Minar, is

    • Options
    • A. 52 m
    • B. 62 m
    • C. 72 m
    • D. 82 m.
      • Discuss
    • 4. On vertical photographs, height displacement is

    • Options
    • A. positive for points above datum
    • B. negative for points below datum
    • C. zero for points vertically below the air station
    • D. all the above.
      • Discuss
    • 5. A star may culminate at zenith if its declination is

    • Options
    • A. greater than the longitude of the place
    • B. less than the latitude of the place
    • C. equal to the latitude of the place
    • D. none of these.
      • Discuss
    • 6. By applying clockwise swing to right projector, maximum y-parallax is introduced in the model at

    • Options
    • A. position 1
    • B. position 2
    • C. position 4
    • D. position 6.
      • Discuss
    • 7. ? and ? are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being S and f respectively. Parallax displacement of the point due to relief, is

    • Options
    • A.
    • B.
    • C.
    • D. .
      • Discuss
    • 8. The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as

    • Options
    • A. isocentre
    • B. principal point
    • C. perspective centre
    • D. plumb line.
      • Discuss
    • 9. The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. The net ground area of a vertical photograph 20 cm x 20 cm on scale 1 : 10,000 having overlaps 60% and 30%, is

    • Options
    • A. 0.50 sq km
    • B. 0.56 sq km
    • C. 0.60 sq km
    • D. 0.64 sq km.
      • Discuss

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