41) The explosives shall be transported to the site of blasting not more
than commencement of charging of the holes.
a) 30 mi b) 1 hour c) 45 min. d) 1 ½ hour before the
42) Which of the following are the examples of an inadequately maintained haul road?
a) Pot holes or washouts b) Inadequate berms
c) Bumps and muddy areas d) inadequate gradient
d) All above
43) The energy shall not be transmitted in to a Mine at a voltage exceeding and shall not be used therein at a voltage exceeding .
a) 11 KV & 6.6 KV b) 1100 KV & 660 KV c) 250 V & 650 V d) 33 KV & 11 KV
44) Pit slope is the angle made by the imaginary line joining the –
a) Top most crest of the bench to bottom most toe of the
b) Top most toe of the bench to the bottom most toe of the bench
c) Top most crest of the bench to bottom most crest of the
d) Average of the all bench angle
45) Maximum Exposure Limit of dust prescribed for 8 hrs time weighted average in Mine working environment.
a) 5 Mg/m³ b) 3 Mg/m³ c) 7 Mg/m³ d) 10 Mg/m³
46) Which of the following is not the cause of “Fly rock”
a) | Insufficient stemming of holes | b) Overcharging of holes |
c) | Excessive burden | d) Geological disturbances |
e) | ‘a’, ‘b’, ‘c’ & ‘d’ are correct | e) faulty connection |
47) Your colleague is complaining of breathlessness and a tight pain in the chest. You suspect aheart attack. What should you do?
a) Get him to lay down flat.
b) Encourage him to stand up and move around slowly.
c) Make him to sit in a comfortable position
d) Give him heart compressions and artificial respiration
48) A successful accident investigation must answer three questions: What are they?
a) What happened? 2. How it happened? 3. Why it happened?
b) Who is behind it? 2. Who are involved? 3. Why they involved?
c) Why did they do? 2. Why they couldn’t avoid it 3. What went wrong?
d) ‘b’ & ‘c’ are correct
49) Which of the following features should be shown in water danger plan?
a) Position of dyke, fault and geological disturbances
b) River, stream, water course, reservoir
c) Surface contour lines
d) Highest Flood Level of the area
e) All above
50) “Super elevation” is a term used for designing
a) Benches b) Haul Roads c) Dumps d) Magazine
41 | a | ||
42 | d | ||
43 | d | ||
44 | a | ||
45 | b | ||
46 | e | ||
47 | c | ||
48 | a | ||
49 | e | ||
50 | b |
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