| 1. | An arbitrary surface with reference to which the elevation of points are measured and compared, is called ? | |
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datum surface
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level surface
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horizontal surface
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vertical surface
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Report Question| 2. | The image formed by the objective in the plane of cross hairs is and inverted ? | |
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real and straight
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real and inverted
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virtual and straight
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virtual and inverted
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| 3. | An imaginary line tangential to the longitudinal curve of the bubble tube at its middle point called ? | |
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axis of telescope
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axis of level tube
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level line
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line of collimation
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| 4. | The working from whole to the part is done in surveying in order to ensure that ? | |
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survey work is completed more quickly
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number of errors is minimum
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plotting is done more quickly
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errors and mistakes of one portion do not affect the remaining portion
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| 5. | The value of additive constant for the tachometer varies from ? | |
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0 to 15 cm
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15 to 30 cm
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30 to 45 cm
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45 to 60 cm
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| 6. | The reduced level of a point on the ground is called ? | |
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spot level
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spot height
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either (a) or (b)
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none of these
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| 7. | The height of instrument is equal to ? | |
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reduced level of bench mark + back sight
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reduced level of bench mark + fore sight
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reduced level of bench mark + intermediate
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back sight + fore sight
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| 8. | In a quadrantal system, the bearing of a line is measured ? | |
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always clockwise from the south point of the reference meridian towards the line right round the circle
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clockwise or anticlockwise from the east or west whichever is nearer the line towards north or south
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clockwise or anticlockwise from the north or south whichever is nearer the line towards east or west
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none of the above
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| 9. | The angle between the reflecting surfaces of a prism square is ? | |
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30°
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45°
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60°
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75°
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| 10. | A deflection angle is ? | |
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less than 90°
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more than 90° but less than 180°
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equal to the difference between the angle of intersection and 180°
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equal to the difference between the angle of intersection and 360°
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