Introduction To Mining Engineering — Part 2 MCQs with Explanations

20 is the correct answer to “Manhole should be provided along the haulage length at every "A" meter distance. A is given by”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

P-2, Q-4, R-3, S-1 is the correct answer to “Given the following, Machine Component P. Dint header 1. Cowl Q. Coal plough 2. Cutting chain R. Road header 3. Loading apron S. Shearer 4. Static set of bits The correct match is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

150 is the correct answer to “For a 25 mm diameter spherical charge, the maximum allowable charge length in cm is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Bacterial is the correct answer to “Out of two basic system of leaching, if one is chemical, what is the other”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

X > Z > Y is the correct answer to “The basic constituents of an emulsion explosive consist of oxidizers, fuels and surfactant with weight percentages of X, Y, Z respectively. Identify the correct relationship from the followings”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

The vertical line at the panel edge and line connecting the panel edge and zero subsidence on the surface is the correct answer to “In longwall mining subsidence phenomenon, the "angle of break" is the angle between”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Wider gallery is the correct answer to “Chances of 'Span failure' is maximum for”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Is above the geometric profile is the correct answer to “The layout of the pipelines for hydraulic stowing should be such that the hydraulic profile”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Dragline is the correct answer to “Which of the following equipment is very common for over casting or side casting”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Sublevel open stoping, Cut-and-fill stoping, Sublevel caving, Block caving is the correct answer to “Depending on the decreasing ability of surrounding rock to store strain energy, the underground metal mining methods can be ordered as”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Closer outlets will weaken the shaft pillar causing possibility of leakage is the correct answer to “Why outlets from a mine are not provided closer than 13.5m”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

CMR 137 & Circular 5/1972 is the correct answer to “Sectionalization of work in Bord and Pillar method has been stipulated in which of the following statutes”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Internal box cut is the correct answer to “To open a mine for deep seated, the cut used is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Armoured flexible conveyor and stage loader is the correct answer to “SIVAD unit is mainly used at Indian long wall face to operate”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

10 mega Ohm is the correct answer to “What should be the minimum insulation resistance of high power cable”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Cut and fill is the correct answer to “If the RQD of the ore and wall rock are low, the stoping method suitable is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

20 days is the correct answer to “In respect of every medical examination under rule 29B, the manager of the mine concerned shall give at least N days prior notice in writing to the persons to be examined. N is given by”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

2 is the correct answer to “Dumper arrives at a shovel at a constant rate of 10 per hour. The service rate is constant at 15 per hour. At a time, the expected number of dumpers in the queue is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

565 gm is the correct answer to “In solid blasting system the maximum charge in a shot hole should not exceed”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

4.57 is the correct answer to “For a shrinkage stope the following data values are given Insitu tonnage 9000 tonne Insitu grade 5.2 g/tonne Average grade of waste 1.4 g/tonne Loss of ore in the stope 10% Dilution 20% The grade at the mill-head in g/tonne is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

Powered support is the correct answer to “Power pack is provided at long wall face to give pressure to”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

≤ 14 m2 is the correct answer to “What should be the minimum floor area of every shelter as per the Mines Rules, 1955”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

underground gasification is the correct answer to “Name the method which involves partial combustion of coal with the objective to extract thermal energy from the coal seam”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

population is the correct answer to “In sampling, a part is collected to represent the total set of observation. Use any single word from the following to replace "total set of observation"”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

2.5 Kg/ton of coal produced is the correct answer to “Optimum rate of stone dusting in underground coal mines is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

underground glory hole or milling is the correct answer to “In underground, from the footwall shaft cross-cuts are drawn to intersect the orebody and raises are made to connect the cross-cuts. The top of the raises are widened. Name the method of extraction.”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

16 is the correct answer to “Maximum number of faces possible in a 6 heading B & P district is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

1667 is the correct answer to “The wt% of solids in a sand-water stowing pipe is 60. If the solids density is 3000 kg/m 3 , the pulp density of the slurry in kg/m 3 is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

inversely proportional is the correct answer to “What will be relation between the side abutment pressure and Young's Modulus of the main roof after weighting”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

4 is the correct answer to “20 plain detonators in series, each of 2d resistance, are fired by a DC exploder supplying a current of 1.25 A. If 250 mJ energy is spent to fire the detonators, the time required in millisecond after detonator initiation is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

incubation period of coal seam is the correct answer to “One of the main criteria to decide the size of Panel for depillaring is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

0.249 is the correct answer to “A 2.5 m thick coal seam lying at an average depth of 100 m has been developed by bard and pillar method. The width of the square pillars is 30 m (centre to centre) and the gallery width is 4 m. The average density of the overlying strata is 26 kN/m 3 and the pillar strength is 4500 kN/m 2 . Extraction ratio during the development of the pillar is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

integral caving is the correct answer to “Soutirage mining is the alternative name of”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

cut sequence is the correct answer to “In room and pillar mining multiple faces are advanced but driving entries or rooms follows a definite pattern known as”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

28.5 m is the correct answer to “What is the minimum size of coal pillar when the depth of coal seam from surface remains between 240 m to 360 m and gallery width does not exceed 3 m”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

0.25 is the correct answer to “A haul ramp of 6% grade is to be constructed connecting a bench of 15 m height to the surface. If the cost of ramp construction is 1 million rupees per km, the cost of this ramp construction in million rupees will be”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

5 lux is the correct answer to “What is the standard of lighting required for the workplace of HEMM's of opencast mine”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

95 : 5 is the correct answer to “Ratio of water and emulsion in hydraulic fluid is”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

blasting gallery is the correct answer to “Ring pattern drill holes are provided in”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.

a zone of leakage & recirculation will inevitably occur is the correct answer to “What will happen if a Booster fan is placed too far inbye of the neutral point in either intake or return”. This question is standard in competitive examination syllabi for Introduction To Mining Engineering.