DGMS EXAM SCU-WINNING & WORKING DEC 2021
DGMS Second class managers unrestricted Coal Winning and working 19 Dec 2021 FN
1) Automatic contrivance in a winder is used for
a) Under load
b) Over winding
c) Over current
d) Overload
e) None of these
2) Inflammable materials should not be stored near the entrance of a mine within a distance of
a) 9m
b) 15m
c) 20m
d) 30m
e) 45m
3) Major effects of dust on health of persons
a) Skin related diseases
b) Breathing related diseases
c) Eye-related diseases
d) Liver related diseases
e) All of these
4) To prevent recirculation of air, the quantity of air taken by an auxiliary fan shall not exceed
a) 35% of the quantity of air passing through the fan
b) 30% of the quantity of air passing through the fan
c) 50% of the quantity of air passing through the fan
d) 60% of the quantity of air passing through the fan
e) 45% of the quantity of air passing through the fan
5) The percentage of inflammable gas in the general body of return air shall not exceed
a) 0.5
b) 0.75
c) 0.45
d) 1.25
e) 1
6) Which is not a shot hole pattern –
a) Wedge cut
b) Burn cut
c) Dump cut
d) Fan cut
e) Drag cut
7) 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 7.5 m
d) Radar
e) 3D scanner
8) Contiguous seams are seams
a) Within 9m of each other
b) Within 3m of each other
c) Within 6m of each other
d) Within 15m of each other
e) None of these
9) Which is not a PPE?
a) Helmet
b) Safety shoe
c) Safety belt
d) Stemming rod
e) Goggle
10) Tub re-railers shall be provide at an interval of
a) Not more than 500m
b) Not more than 450m
c) Not more than 350m
d) Not more than 300m
e) Not more than 250m
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