MINING ENGINEERING GATE PREVIOUS QUESTIONS - 3

1. as per classification of mineral resources reserve means

1. identified resource
2. identified and techno economically viable resource
3. hypothetical resource
4. inferred resource

2. the purpose of rotating a whirling hygrometer in hygrometric survey is to

1. wet the cotton wick with water thoroughly
2. maintain constant temperature of water in the container
3. create study state evaporation of moisture from the wet bulb surface
4. prevent the heat produced by the cap lamp of the observer from affecting the readings

3. stone dust barrier in underground coal mines are used to arrest

1. black damp explosion
2. air blast
3. fire damp explosion
4. coal dust explosion

4. the function of automatic contrivinances in a winding system is to prevent?

1. over speeding and over winding
2. slow banking and load balancing
3. over loading and over balancing
4. over speeding and load balancing

5. A low grade deep-seated ore body dipping at 70 degree has right length of 2 km and width of 100 metre. the ore body and wall rocks are weak and fractured. the preferred method of mining is

1. shrinkage stoping
2. cut and fill stoping
3. Block caving
4. Room and pillar stoping

6. the availability of water in the root zone of plant use is maximum in the case of

1. sand
2. loam
3. clay
4. gravel

7. multi point borehole extensometer is used to monitor

1. convergence between the roof and the floor
2. strain between fixed points along a borehole
3. strain between the anchor point and the reference point on the surface
4. changing distances between fixed points along a bore hole

8. semivariogram modelling is used for reservation of mineral deposit by

1. polygonal method
2. distance weighting method
3. geostatical method
4. nearest neighbour method

9. which one of the following does not belong the direct operating cost of a man

1. administrative cost
2. royalty
3. Fuel cost
4. explosive cost

10. Lane's algorithm is applied to determine

1. Mill cut off grade
2. Mine production rate
3. operating cost
4. ultimate pit