MINING ENGINEERING

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HERE THE QUESTIONS FOR YOU MINING ENGINEERS   (Q1  to Q10) AND 

(ANSWERS ARE BELOW THE QUESTIONS)  

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Q1) 

The required water for 1 te of sand in hydraulic sand stowing?

1)  800 liters

2)  900 liters

3)  1100 liters

4)  1300 liters 

 

Q2)

The stowing rate in hydraulic sand stowing is?

1)  60-80 tph

2)  80-100 tph

3)  100-120 tph

4)  120-140 tph

 

 

Q3)

The size of the largest particle of the sand does not exceed if the dia of the pipe is D is ?

1)  1/2 of D

2)  1/3 of D

3)  1/1.5 of D

4)  D 

Q4)

The min velocity of the slurry in the pipe should be.....?

1)  1 m/s

2)  2 m/s

3)  3 m/s

4)  4m/s

Q5)

In hydraulic sand stowing the operations are conducted such that not more than .....sq.m of roof area is exposed in any working area at a time and not more than.... such places are left unstowed?

1)  60;1

2)  70;2

3)  80;1

4)  80;2

Q6)

The line of extraction is best suited for hydraulic sand stowing is?

1)  step diagnal

2)  diagonal 45 deg

3)  parellel

4)  diagnal 60 deg

Q7)

The stowing efficiency in hand packing is?

1)  50 %

2)  73 %

3)  60 %

4)  70 %

Q8)

The stowing efficiency in pneumatic sand stowing?

1)  50 %

2)  73 %

3)  60 %

4)  70 %

Q9) 

The stowing efficiency in hydraulic sand stowing?

1)  50 %

2)  73 %

3)  60 %

4)  70 %

Q10)

The stowing efficiency in Mechanical sand stowing?

1)  50 %
2)  73 %

3)  60 %

4)  70 %

ANSWERS FOR ABOVE QUESTIONS 

Q1)  3   Q2)  2    Q3)  2     Q4)   2  Q5)  4     

Q6)  1   Q7)  1    Q8)  4  Q9)   2   Q10)    3 

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