DGMS EXAM FCR- WINNING & WORKING 19 DEC 2021
FIRST CLASS WORKING COAL RESTRICTED 19 DEC 2021
1) Stripping ratio mainly helps in assessing _________
a) Bench planning
b) Equipment requirement
c) Haul road gradient
d) Coal recovery
e) None of the options
2) Sub-grade drilling is necessary for breaking
a) Crest
b) Bench
c) Toe
d) Small pieces
e) Lumps
3) Digging capacity is determined for ______
a) Excavators
b) Dumpers
c) Drills
d) Dozer
e) Rippers
4) Every plan and section prepared in accordance with the provisions of CMR, 2017 shall show a scale of the plan at least ______
a) 10 cm long and suitably sub-divided
b) 25 cm long and suitably sub-divided
c) 15 cm long and suitably sub-divided
d) 20 cm long and suitably sub-divided
e) None of the options
5) Who will frame and enforce standing orders for the safe use of explosives and a copy of the same shall be submitted to the Regional Inspector to use two types of explosive in any shot-hole?
a) Blaster/ shot firer
b) Safety Committee members
c) Blasting in-charge
d) Mines manager
e) Agent
6) Unit of blast induced vibration is _______
a) mm/s
b) Pascal
c) dB
d) Nm
e) m/min
7) The trenches made only for prospecting by mean of manual method, the height of bench shall not exceed _____ m
a) 1.8
b) 2.4
c) 3
d) 4.5
e) 6
8) The height of the bench is decided by
a) drill machine capacity
b) height of the dumper
c) height of the boom of the shovel
d) combination of shovel dumper
e) none of them
9) HANFO has approximately ____ higher bulk strength compared to ANFO.
a) 20-25 %
b) 25-30%
c) 30-35%
d) 35-40%
e) 40-45%
10) The main purpose of Block modeling is to determine the _______
a) Volume of ore body
b) Direction of fault plane in the block
c) Grade of mineral in the block
d) Direction of dip in the block
e) Numbers of fault planes present in the block
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