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  • Question

  • For high sensivity of the bubble tube


  • Options
  • A. a liquid of low viscosity is used
  • B. a liquid of low surface tension is used
  • C. the bubble space should be long
  • D. the bubble tube should not be too narrow
  • E. all the above.

  • Correct Answer
  • all the above. 

    • Surveying problems

    Search Results

    • 1. The method of reversal

    • Options
    • A. is usually directed to examine whether a certain part is truly parallel or perpendicular to another
    • B. makes the erroneous relationship between parts evident
    • C. both (a) and (b)
    • D. neither (a) nor (b).
      • Discuss
    • 2. Mistakes which may produce a very serious effect upon the final results arise due to

    • Options
    • A. in attention
    • B. in experience
    • C. carelessness
    • D. all of these.
      • Discuss
    • 3. During secular variation of magnetic meridian at different places

    • Options
    • A. range of oscillations is constant
    • B. period of oscillation is constant
    • C. range and period of oscillation both vary
    • D. period of oscillation only varies.
      • Discuss
    • 4. The ratio of the length of long chord and the tangent length of a circular curve of radius R deflecting through angle ?, is

    • Options
    • A. sin
    • B. cos
    • C. tan
    • D. 2 sin
    • E. 2 cos .
      • Discuss
    • 5. To orient a plane table at a point P roughly south of the mid-point of two inaccessible conical hill stations A and B in the plains, a point C is selected in line with AB and table is oriented at C by bringing ab in line with AB. A ray is then drawn towards P and at P the table is oriented by back ray method. The orientation so obtained, is

    • Options
    • A. unique and correct
    • B. incorrect
    • C. manifold and correct
    • D. not reliable.
      • Discuss
    • 6. The smaller horizontal angle between the true meridian and a survey line, is known

    • Options
    • A. declination
    • B. bearing
    • C. azimuth
    • D. dip.
      • Discuss
    • 7. The bearing of C from A is N 30° E and from B, 50 metres east of A, is N 60° W. The departure of C from A is

    • Options
    • A. 50 m
    • B. 50 3 m
    • C. 25 3 m
    • D. 25 m
      • Discuss
    • 8. If the long chord and tangent length of a circular curve of radius R are equal the angle of deflection, is

    • Options
    • A. 30°
    • B. 60°
    • C. 90°
    • D. 120°
    • E. 150°.
      • Discuss
    • 9. The difference in the lengths of an arc and its subtended chord on the earth surface for a distance of 18.2 km, is only

    • Options
    • A. 1 cm
    • B. 5 cm
    • C. 10 cm
    • D. 100 cm.
      • Discuss
    • 10. If ? and ? be the elevations of two objects A and B respectively, ? be the angle observed by a sextant. The correct horizontal angle is

    • Options
    • A.
    • B.
    • C.
    • D. none of these.
      • Discuss

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