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 life of the C.I pipes used in sand stowing is......lac ton of sand?

1)  1 - 4

2)  4 - 8

3)  8 - 12

4)  12 - 16

 

Q2)

The sand input to bumker is calculated by?

1)  venturimeter

2)  kentmeter

3)  lea recorder

4)  none of the above 

 

Q3)

In sand stowing generally the sand required for one te coal extraction in virgin area?

1)  1.3 te

2)  2 te

3)  2.5 te

4)  3 te

Q4)

Hydraulic stowing is not successful where the seam is less than ...m depth and flatter than ...deg?

1)  200 ; 5

2)  100 ; 5

3)  100 ; 10

4)  200 ; 10

Q5)

Hand packing is usefull upto max gradienat ?

1)  35 deg

2)  30 deg

3)  25 deg

4)  20 deg

Q6)

The anchorage support of resin capsule is?

1)  6te

2)  8te

30  10te

4)  12te 

Q7)

The yeilding props which exerts resistance with continuous increase in yield are called?

1)  Early bearing supports

2)  Late bearing supports

3)  Hydraulic supports

4)  none of the above 

Q8)

The inclination of prop to the vertical when set to side support is ?

1)  10 - 14 deg

2)  14 - 20 deg

3)  20 - 25 deg

4)  25 - 30 deg

Q9) 

Bulk strength of the timber prop is ...(kg/sq.cm)?

1)  150-230

2)  100-150

3)  250-300

4)  none of the above

Q10)

In resin capsule the mixture hardens within .... seconds and become solid?

1)  20 - 30

2)  30 - 40

3)  40 - 50

4)  50 - 60

ANSWERS FOR ABOVE QUESTIONS 

Q1)  2   Q2)  3    Q3)  1     Q4)   2  Q5)  3     

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

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