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DGMS EXAM SMU- WNNING & WORKING 20 DEC 2021

SECOND CLASS WORKING METAL UR 20 DEC 2021

1) With increase in the moisture content of rock, the bearing capacity of the rock 

a) Increases 

b) Decreases 

c) may decrease or increase 

d) does not change 

e) none of above 

2) Hutti gold mines are located in which state of India? 

a) Karnataka 

b) Andhra Pradesh 

c) Tamil Nadu 

d) Bihar 

e) Telengana 

3) The Reason for misfire is 

a) Poor stemming 

b) Low current 

c) Excess charge 

d) Improper delays 

e) Power failure 

4) Secondary of tertiary vertical opening, driven downward from one level to another is termed as 

a) raise 

b) transfer point 

c) wirize 

d) shaft 

e) none of these 

5) In conventional sublevel stoping method ore is handling by 

a) LHD

b) Scraper 

c) Gravity low 

d) Belt conveyor 

e) Dozer 

6) The blasting technique used for controlled throw is known as 

a) Cast blasting 

b) Coyote blasting 

c) Controlled blasting 

d) Throw blasting 

e) None of the above 

7) Various drilling patterns developed for blasting solid rock faces are 

a) Wedge cut or V cut 

b) Pyramid or diamond cut 

c) Drag cut and fan cut 

d) Burn cut 

e) All of the above 

8) The mining terminology, exploitation or wining is : 

a) The process of blasting 

b) The process of extracting the ore or economic mineral from the earth. 

c) The process of ventilation 

d) The detailed mapping of the are body 

e) None of these 

9) The ratio of the diameter of an explosive column & the blast hole diameter is usually expressed as 1/a is known as – 

a) Blasting ratio 

b) Column ratio 

c) Percentage ratio 

d) Charging ratio 

e) Decoupling ratio 

10) An imaginary line that passes through points of equal elevation with reference to a detum is called – 

a) Contour 

b) Reduced level 

c) Bench mark 

d) Horizontal level 

e) Strike line