DGMS EXAM SCR- WINNING & WORKING EXAM 2021
DGMS Second class managers restricted coal winning and working 20 Dec 2021 AN
1) In case of blasting in fire areas charging and firing of holes in any one round shall be completed latest between
a) 0-1 hr
b) 1-2 hr
c) 2-3 hrs
d) 0-2 hrs
e) None of these
2) Interburden means _________
a) Coal seams
b) Overburden
c) Strata between coal seams
d) Shale bands
e) All the option
3) Pick out the blasting free technology
a) Continuous miner
b) Longwall mining
c) Surface miner
d) Highwall mining
e) All of these
4) Which of the following is not a survey instrument :-
a) Total station
b) Theodolite
c) Not less than 2.2 m and not more than 7.5m
d) Radar
e) 3D scanner
5) safety belt or life line is provided to work person when he is likely to work at any place having inclination more than
a) 30 degrees from horizontal
b) 45 degrees from horizontal
c) 15 degrees from horizontal
d) 25 degrees from horizontal
e) 60 degrees from hotizontal
6) Which of the following equipment is most suited for side casting in opencast coal mines?
a) Excavator
b) Electric shovel
c) Rope shovel
d) Front end loader
e) Dragline
7) Pre-splitting is a technique of ________
a) Production blasting
b) Controlled blasting
c) Underwater blasting
d) Crater blasting
e) Secondary blasting
8) The machine which is extensively used for direct ca sting operating in an opencast mine is ___
a) Shovel
b) BWE
c) Walking dragline
d) Back hoe
e) Front end loader
9) Exploration drilling is best done by __________
a) Diamond drilling
b) Churri drilling
c) Percussion drilling
d) DTH drilling
e) None of the options
10) Notice of Abandonment or Discontinuance of a mine/seam for more than 60 days, shall be given to The Chief inspector and regional in form 1
a) Within seven days of Abandonment or Discontinuance
b) Within 30 days of abandonment or Discontinuance
c) 80 days prior to the date of Abandonment or Discontinuance
d) 40 days prior to the date of Abandonment or discontinuance
e) None of these
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