| 1. | The lines of earth's magnetic field run from ? | |
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south to north
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north to south
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east to west
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west to east
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Report Question| 2. | The theodolite is an instrument used for measuring very accurately ? | |
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horizontal angles only
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vertical angles only
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horizontal and vertical angles
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linear measurements
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| 3. | In the surveying telescopes, cross hairs are fitted in ? | |
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centre of the telescope
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optical centre of eye piece
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front of the eye piece
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front of the objective
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| 4. | When the image formed by the objective is not situated in the plane of cross-hairs, ? | |
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the cross-hairs should be adjusted
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the eye-piece should be focussed
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the objective should be focussed
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the parallex should be removed
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| 5. | For removing the parallex, ? | |
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the eye-piece should be focussed for distinct vision of cross-haris
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the image of the object should be brought in the plane of cross-hairs
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either (a) or (b)
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both (a) and (b)
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| 6. | The representative fraction 1/2500 means that the scale is ? | |
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1 cm = 0.25 m
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1 cm = 2.5 m
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1 cm = 25 m
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1 cm = 250 m
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| 7. | The ratio of the focal length of the objective to that of an eye-piece of a telescope is called its ? | |
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definition
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brightness
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sensitivity
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magnification
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| 8. | An angle measured clockwise from the proceeding survey line to the following survey line is called ? | |
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direct angle
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vertical angle
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horizontal angle
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deflection angle
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| 9. | If a chain is used at a temperature ............. the temperature at which it was calibrated, the error in measured length is negative. ? | |
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equal to
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lower than
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higher than known
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| 10. | The obstacle, which obstructs chaining but not vision, is ? | |
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river
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hill
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rising ground
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all of these
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