MINE SURVEYING QUIZ - 2

1. A level surface to which elevation of different points are referred to is known as

1. Level surface
2. Datum
3. Horizontal
4. Plane

2. A tilting level is used to measure

1. difference in elevation between two points
2. tilt of the earths surface
3. length of a line on earths surface
4. none of the options

3. Barren of a fault is represented by

1. Horizontal displacement of bed
2. Lateral displacement of bed
3. Vertical displacement of bed
4. None of the options

4. Every plan and section prepared or submitted, in accordance with the regulations should show

1. scale of the plan, at least 35 cm long
2. scale of the plan, at least 25 cm long
3. scale of the plan, at least 50 cm long
4. scale of the plan, at least 100 cm long

5. In a dumpy level the instrument is leveled

1. automatically
2. by foot screws only
3. by tilting screw
4. by eye estimation

6. In a theodolite the line passing through the center of the cross-wires and optical center of the objective lens and its continuation is know as

1. trunion line
2. horizontal line
3. line of collimation
4. axis of level tube

7. Offset plans in respect of all existing workings below the surface features should be maintained in a scale of

1. 200:01
2. 500:01
3. 1000:01
4. 100:01

8. One or more vertical mine section or sections are essentially required to be shown on underground mine plan when

1. bearing of base line is more than 30 degrees
2. where a seam has an average inclination of more than 30 degrees from the horizontal
3. the dip of seam is more than 40 degrees
4. none of the options

9. Plain scales are designed to measure

1. three dimensions such as centimeters, decimeters and meters
2. two dimensions such as decimeters and meters
3. a given angle or to set off a given angle
4. none of the options

10. slow motion to a theodolite is given using the

1. tangent screw
2. capstan screw
3. clamping screw
4. foot screw