HERE THE QUESTIONS FOR YOU MINING ENGINEERS (Q1 to Q10) AND
(ANSWERS ARE BELOW THE QUESTIONS)
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Q1)
The current required for the ignition of the fuse head is?
1) 2 amp
2) 1 amp
3) 0.5 amp
4) 3.5 amp
Q2)
120,Safety tests carried out for?
1) slurry explosive
2) emulsion
3) NG
4) ANFO
Q3)
If the bedded planes are seperated by more than 1.2 m apart then the rocks are said to be
?
1) Massive
2) Bedded
3) Flaggy
4) rubble
Q4)
The rocks said to be flaggy if the bedded planes are seperated by..?
1) more than 1.2m
2) 1m-1.2m
3) 75mm-1m
4) less
than 75mm
Q5)
The weight of the rocks in coal mining areas exerts a pressure nearly per metre depth from the surface is ..?
1) 1
kg/sq.cm
2) 0.5 kg/sq.cm
3) 0.2 kg/sq.mm
4) 0.2 kg/sq.cm
Q6)
The immediate roof is called..?
1) 3m above the seam
2) 6m above the seam
3) 6m below the seam
4) 3m below the
seam
Q7)
Phenomena of the rocks in imediate roof bend downwards under their own weight and tend to separate from
one another is known as ..?
1) subsidence
2) pressure arch
3) bed separation
4) roof bending
Q8)
The pressure arch in L/W workings have its apex or crest at a min height above the seam at nearly .... times
the length of face?
1) 1
2) 2
3) 3
4) 4
Q9)
The depression of ground surface and the structures is called?
1) subsidence
2) pressure arch
3) bed separation
4) roof
bending
Q10)
L/W faces with caving have caused difficulties in roof control at depth of less than
nearly..?
1) 100 m
2) 200 m
3) 300 m
4) 400 m
ANSWERS FOR ABOVE QUESTIONS
Q1) 3 Q2) 1 Q3) 1 Q4) 4 Q5) 4
Q6) 2 Q7) 2 Q8) 2 Q9) 1 Q10) 1
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