HERE THE QUESTIONS FOR YOU MINING ENGINEERS (Q1 to Q11) AND
(ANSWERS ARE BELOW THE QUESTIONS)
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Q1)
The seam thickness is suitable for coal plough operation?
1) 0.2 to 1m
2) 0.6 to 2m
3) 1 to 3m
4) 3 to 5 m
Q2)
The minimum life of the mine should be more than.....years for adopting horizon mining?
1) 10
2) 20
3) 30
4) 40
Q3)
The minimum thickness of the seam for adopting Blasting gallery method is?
1) 5m
2) 7m
3) 10m
4) 12m
Q4)
The stripping ratio for shovel-dumper combination is?
1) 1.5 : 1
2) 2: 1
3) 4 to 5 :1
4) 8 to 10:1
Q5)
In formation of benches the angle of slope should not exceed?
1) 80 deg
2) 30 deg
3) 45 deg
4) 60 deg
Q6)
The stripping ratio for Dragline?
1) 1.5 : 1
2) 2: 1
3) 4 to 5 :1
4) 8 to 10:1
Q7)
If the material is loose or alluvium the bench height should be?
1) more than 1.5m
2) less than 1.5m
3) 3m
4) more than
3m
Q8)
The output capacity of the dragline with 23 to 30 cu.m is......million cu.m per year?
1) 0.1 to 0.2
2) 0.25 to 0.75
3) 1.5
to 1.7
4) 3 to 4.5
Q9)
Wagon drill is used for the drill holes having depth of?
1) upto 3m
2) 3 - 15 m
3) 15 - 25 m
4) beyond 25m
Q10)
The limiting gradient for the dragline is?
1) 8 deg
2) 12 deg
3) 16 deg
4) 20 deg
Q11)
The percentage of recovery in BG method is?
1) 50-60
2) 60-70
30 70-80
4) 80-90
ANSWERS FOR ABOVE QUESTIONS
Q1) 2 Q2) 3 Q3) 2 Q4) 3 Q5) 3
Q6) 4 Q7) 2 Q8) 4 Q9) 2 Q10) 2 Q11) 3
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