Introduction To Mining Engineering MCQ

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• Power pack is provided at long wall face to give pressure to
  ক

  Powered support

  খ

  Armoured flexible conveyor

  গ

  Double ended ranging drum shearer

  ঘ

  Stage loader
• For a shrinkage stope the following data values are given<br>
  ক

  <table class="table-style-1"> <tr> <td>Insitu tonnage</td> <td>9000 tonne</td> </tr> <tr> <td>Insitu grade</td> <td>5.2 g/tonne</td> </tr> <tr> <td>Average grade of waste</td> <td>1.4 g/tonne</td> </tr> <tr> <td>Loss of ore in the stope</td> <td>10%</td> </tr><tr> <td>Dilution</td> <td>20%</td> </tr></table><br>The grade at the mill-head in g/tonne is 6.47

  খ

  4.57

  গ

  3.27

  ঘ

  5.47
• In solid blasting system the maximum charge in a shot hole should not exceed
  ক

  150 gm

  খ

  250 gm

  গ

  335 gm

  ঘ

  565 gm
• 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
  ক

  2

  খ

  3

  গ

  5

  ঘ

  4
• 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
  ক

  10 days

  খ

  15 days

  গ

  20 days

  ঘ

  30 days
• If the RQD of the ore and wall rock are low, the stoping method suitable is
  ক

  Shrinkage

  খ

  Sublevel

  গ

  Block caving

  ঘ

  Cut and fill
• What should be the minimum insulation resistance of high power cable?
  ক

  10 mega Ohm

  খ

  15 mega Ohm

  গ

  25 mega Ohm

  ঘ

  50 mega Ohm
• SIVAD unit is mainly used at Indian long wall face to operate
  ক

  Armoured flexible conveyor and stage loader

  খ

  Power pack

  গ

  Shearer machine

  ঘ

  All machine at long wall face
• To open a mine for deep seated, the cut used is
  ক

  External box cut

  খ

  Internal box cut

  গ

  Trench

  ঘ

  Deep cut
• Sectionalization of work in Bord and Pillar method has been stipulated in which of the following statutes?
  ক

  CMR 116A &amp; Circular 5/2002

  খ

  CMR 117 &amp; Circular 6/2002

  গ

  CMR 137 &amp; Circular 5/1972

  ঘ

  CMR 122 &amp; Circular 6/1972
• Why outlets from a mine are not provided closer than 13.5m?
  ক

  For quicker intercommunication

  খ

  For easier pit top arrangement

  গ

  Closer outlets will weaken the shaft pillar causing possibility of leakage

  ঘ

  There may be possibility of subsidence
• Depending on the decreasing ability of surrounding rock to store strain energy, the underground metal mining methods can be ordered as
  ক

  Cut-and-fill stoping, Sublevel caving, Sublevel open stoping, Block caving

  খ

  Sublevel open stoping, Cut-and-fill stoping, Sublevel caving, Block caving

  গ

  Sublevel caving, Sublevel open stoping, Cut-and-fill stoping, Block caving

  ঘ

  Block caving, Sublevel caving, Sublevel open stoping, Cut-and-fill stoping
• Which of the following equipment is very common for over casting or side casting?
  ক

  Shovel

  খ

  Dozer

  গ

  Dragline

  ঘ

  Payloader
• The layout of the pipelines for hydraulic stowing should be such that the hydraulic profile
  ক

  Is above the geometric profile

  খ

  Is below the geometric profile

  গ

  Is on the geometric profile

  ঘ

  There is no relation with the geometric profile
• Chances of 'Span failure' is maximum for
  ক

  Wider gallery

  খ

  Narrow gallery

  গ

  Staggered gallery

  ঘ

  Blasting gallery
• In longwall mining subsidence phenomenon, the "angle of break" is the angle between
  ক

  The vertical line at the panel edge and line connecting the panel edge and zero subsidence on the surface

  খ

  The vertical line at the panel edge and line connecting the panel edge and point of critical deformation on the surface

  গ

  The vertical line at the panel edge and line connecting the panel edge and point of the maximum tensile strain on the surface

  ঘ

  The horizontal line and the line connecting the panel edge and zero subsidence on the surface
• 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
  ক

  X &gt; Y &gt; Z

  খ

  Y &gt; X &gt; Z

  গ

  Y &gt; Z &gt; X

  ঘ

  X &gt; Z &gt; Y
• Out of two basic system of leaching, if one is chemical, what is the other?
  ক

  Physical

  খ

  Mechanical

  গ

  Bacterial

  ঘ

  Physico-electrical
• For a 25 mm diameter spherical charge, the maximum allowable charge length in cm is
  ক

  15

  খ

  25

  গ

  30

  ঘ

  150
• Given the following,<br>
  ক

  <table class="table-style-1"> <tr> <td><strong>Machine</strong></td> <td><strong>Component</strong></td> </tr> <tr> <td>P. Dint header</td> <td>1. Cowl</td> </tr> <tr> <td>Q. Coal plough</td> <td>2. Cutting chain</td> </tr> <tr> <td>R. Road header</td> <td>3. Loading apron</td> </tr> <tr> <td>S. Shearer</td> <td>4. Static set of bits</td> </tr></table><br>The correct match is P-4,Q-2, R-3, S-1

  খ

  P-3, Q-4, R-2, S-1

  গ

  P-2, Q-3, R-4, S-1

  ঘ

  P-2, Q-4, R-3, S-1
• Manhole should be provided along the haulage length at every "A" meter distance. A is given by
  ক

  20

  খ

  50

  গ

  120

  ঘ

  200
• In an opencast mine shown in the figure below, the coal has a density of 1.4 t/m³. Assuming mining operation started from plane XY, the operating stripping ratio under the given conditions in m³/t is<br><img src="/images/question-image/mining-engineering/introduction-to-mining-engineering/1682335151-M2-1.3-8-25.PNG" title="Introduction to Mining Engineering mcq question image" alt="Introduction to Mining Engineering mcq question image">
  ক

  2.32

  খ

  2.47

  গ

  2.56

  ঘ

  2.64
• Which one of tire following HEMM is a tyre mounted?
  ক

  LHD

  খ

  SDL

  গ

  Dozer

  ঘ

  Shovel
• Blasting of stope in VCR method consists of
  ক

  Blasting one row after another

  খ

  Creating initial slot going for mass blast

  গ

  Blasting all the holes in slices

  ঘ

  Blasting one column after another
• Shale as immediate roof in underground, coal mine is not suitable because
  ক

  It is difficult to support

  খ

  It gives less waning prior to fall

  গ

  It has high affinity to moisture &amp; departs from roof easily

  ঘ

  It gives bad sound while testing
• What is the name of the media through which coal pulp in hydraulic mining is sent from face to pulp sump or coal crusher?
  ক

  Pipe

  খ

  Conduit

  গ

  Flumes

  ঘ

  Wagon
• The delay interval in short delay detonator is
  ক

  25 ms

  খ

  30 ms

  গ

  15 ms

  ঘ

  35 ms
• A vertical ore body having a consistent width of 100 m has been excavated by the open pit method up to a depth of 100 m at a pit slope angle of 45°. The figure shows the cross section of the open pit. If the ore body is further excavated by a depth of 10 m, maintaining the same pit slope angle, the ratio of waste rock to ore is<br><img src="/images/question-image/mining-engineering/introduction-to-mining-engineering/1682335097-M2-1.3-4-24.PNG" title="Introduction to Mining Engineering mcq question image" alt="Introduction to Mining Engineering mcq question image">
  ক

  1.2

  খ

  2.1

  গ

  3.0

  ঘ

  3.9
• In any working below ground there should be provided at least two shaft or incline which should be away from each other by a minimum distance
  ক

  12.5m

  খ

  13.5m

  গ

  14.5m

  ঘ

  15.4m
• Match the following, for standard diamond rods<br>
  ক

  <table class="table-style-1"> <tr> <td><strong>Specification</strong></td> <td><strong>Outer diameter in mm</strong></td> </tr> <tr> <td>P. AW</td> <td>p. 34.9</td> </tr> <tr> <td>Q. BW</td> <td>q. 44.4</td> </tr> <tr> <td>R. EW</td> <td>r. 54.0</td> </tr> <tr> <td>S. NW</td> <td>s. 66.7</td> </tr></table> P-r, Q-q, R-r, S-p

  খ

  P-r, Q-p, R-s, S-q

  গ

  P-q, Q-r, R-p, S-s

  ঘ

  P-q, Q-r, R-s, S-p