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    Details

    • Home
    • FIRST/SECOND CLASS
    • COAL FMC/SMC EXAM PAPERS
    • 2021
    • SCR-WINNING & WORKING DGMS EXAM -2021

    SCR-WINNING & WORKING DGMS EXAM -2021

    • 20-04-2021
    • 4836
    • 1

    Question Paper _ Key of DGMS SECOND CLASS RESTRICTED UNDER CMR - WINNING AND WORKING

    1)      In manual opencast working, while working in alluvium soil, morum, gravel, clay or debris, from the horizontal, the sides shall be sloped at an angle of safety not exceeding       

    A)      None of them

    B)      60 degrees

    C)      45 degrees

    D)      30 degrees

    E)      75 degrees

     

    2)      Which of the following is treated as base explosive

    A)      TNT

    B)      Potassium nitrate

    C)      none of the options

    D)      NaCl

    E)      Gun powder

     

    3)      No drilling shall be commenced in an area where shots have been fired, until a thorough examination at all places, including remaining butts of old deep holes, for unexploded charges that a drill may strike has been made by the

    A)      Shot-firer

    B)      Overman

    C)      Sirdar

    D)      None of them

    E)      Blasting Officer

     

    4)      While blasting in fire areas in opencast coal mines, hottest holes shall   

    A)      be loaded first

    B)      shall be filled with carbonaceous matter

    C)      be left unloaded

    D)      be loaded last

    E)      None of them

     

    5)      In an opencast mine, where any road exists above level of surrounding area, it shall be provided with strong parapet wall/embankment with a height not less than         

    A)      the diameter of the largest tyre of the vehicles plying on the road.

    B)      3 m

    C)      None of them

    D)      3.5 m

    E)      2.5 m

     

    6)      We understand milisecond as

    A)      1/103 th part of second

    B)      1/106 th part of second

    C)      1/102 th part of second

    D)      1/105 th part of second

    E)      1/1010 th part of second

     

    7)      Which is not a PPE?

    A)      Stemming rod

    B)      Safety Shoe

    C)      Helmet

    D)      Safety Belt

    E)      Goggle

     

    8)      Before introducing any machinery or new operation in a mine, who enforces Code of Practice?

    A)      Owner

    B)      Manager

    C)      Agent

    D)      Safety officer

    E)      None of them

     

    9)      Majority of the Indian coal fields are associated with a river flowing by the side. State the river associated with singareni coal field.

    A)      Damodar

    B)      Wardha

    C)      Godavari

    D)      Mahanadi

    E)      Son

     

    10)    The height of a bench in spoil banks shall not exceed        

    A)      30 m

    B)      45 m

    C)      60 m

    D)      75 m

    E)      None of the above

     

    11)    Which is not a requirement in an electrical shot-firing apparatus?

    A)      The firing circuit is made and broken automatically

    B)      It can be operated only by a removable handle or plug

    C)      The firing circuit is made and broken by means of a push-button switch

    D)      None of them

    E)      It can be operated only by a fixed type non-metallic handle or plug

     

     

    12)    Filling up of mined out area in open-cast mine is known as

    A)      Trenching

    B)      Reclamation

    C)      Salvaging

    D)      None of these

    E)      OB removal

     

     

    13)    Most important personal protective equipment for a dumper operator is   .

    A)      Goggles

    B)      Seat Belt

    C)      Apron

    D)      Ear muffs

    E)      None of the Options

     

    14)    In opencast workings, from any entrance to a mine, except without permission of the manager, no person shall light a fire within a distance of    

    A)      15 m

    B)      None of them

    C)      45 m

    D)      30 m

    E)      60 m

     

    15)    A suitable code of practice for handling and transportation of explosives in bulk in the mine shall be framed by the

    A)      Blasting Officer

    B)      None of them

    C)      Manager

    D)      Agent

    E)      Owner

     

    16)    Minimum illumination standard for area in opencast mines where drill rigs work is    

    A)      25V

    B)      None of them

    C)      15V

    D)      10V

    E)      20V

     

    17)    Coal is a  formation.

    A)      Sedimentary

    B)      Magmatic

    C)      Metamorphic

    D)      Volcanic

    E)      Igneous

     

    18)    At what time before firing of deep-holes is done, the danger zone shall be distinctly demarcated by means of red flags?

    A)      at least 30 minutes

    B)      at least 15 minutes

    C)      at least 60 minutes

    D)      None of them

    E)      at least 90 minutes

     

    19)    In opencast workings, who shall ensure that haulroads are kept maintained?

    A)      Overman and Sirdar

    B)      Overman

    C)      Sirdar

    D)      Dozer operator

    E)      Assistant manager only

     

    20)    A fault in which the older rocks are thrust over new one by lateral compression so that the ends of the broken strata overlap each other is called a

    A)      step fault

    B)      reverse fault

    C)      None of them

    D)      normal fault

    E)      trough fault

     

    21)    In a contoured map if there are higher values inside the loop it indicates   .

    A)      Slope

    B)      None of the Options

    C)      Ridge

    D)      Valley

    E)      Plane

     

    22)    Every Plan or Section prepared or submitted in accordance with the provisions of CMR, 1957 shall

    A)      Show the True North or Magnetic Meridian with date

    B)      Show a Scale of Plan at least 25 cms long and suitably divided and be prepared with a R.F. of 1200:1 unless otherwise provided

    C)      Name of the Mine, Owner & Purpose of the Plan, Show the True North or Magnetic Meridian with date

    D)      Be corrected and be updated Quarterly

    E)      All of these

     

    23)    Minimum illumination requirement at places of crushing, screening, segregation and loading/unloading of Coal Handling Plants is        

    A)      30H

    B)      40H

    C)      25H

    D)      35H

    E)      None of them

     

    24)    In steep workings, unless he is secured by a safety belt or a life line, no person shall work or be permitted to work at any place having an inclination of        

    A)      30 degrees or more

    B)      None of them

    C)      65 degrees or more

    D)      45 degrees or more

    E)      60 degrees or more

     

    25)    The spacing between the holes in the trim row drilled in pre-splitting method to control ground vibrations ranges from   

    A)      6-8 times the hole diameter

    B)      12-16 times the hole diameter

    C)      None of them

    D)      16-20 times the hole diameter

    E)      2-6 times the hole diameter

     

    26)    The maximum number of detonators issued to a shot-firer during his shift shall not exceed  

    A)      90

    B)      100

    C)      None of them

    D)      50

    E)      Maximum number of shots that he is permitted to fire

     

    27)    In opencast mines, where crossing between dumper haulroads and roads for Light Motor Vehicles cannot be avoided, at what the maximum distance from the crossing speed breakers shall be provided on approach of Light Motor Vehicles crossings shall be clearly visible to operators of both light motor vehicles and dumpers for atleast

    A)      20 m

    B)      25 m

    C)      None of them

    D)      15 m

    E)      30 m

     

    28)    Before introducing any machinery or new operation in a mine, who frames Code of Practice?

    A)      Manager

    B)      Safety Officer

    C)      All of them

    D)      Owner

    E)      Agent

     

    29)    In manual opencast working, while working in alluvium soil, morum, gravel, clay or debris, the height of any bench shall not exceed

    A)      4.5 m

    B)      3.0 m

    C)      None of them

    D)      1.5 m

    E)      2.0 m

     

    30)    While blasting in fire areas in opencast coal mines, such holes shall not be charged if the temperature inside the blast hole exceeds           

    A)      None of them

    B)      100 degrees

    C)      60 degrees

    D)      80 degrees

    E)      120 degrees

     

    31)    Which one of the following combinations for excavation and/or loading and for transportation of coal or overburden in a surface mine is not practicable?

    A)      Scraper - Dumper

    B)      Dozer - Front-end-loader - Dumper

    C)      None of the Options

    D)      Front-end-loader - Dumper

    E)      Shovel - Dumper

     

    32)    Fire extinguisher shall be used for

    A)      Electrical fire

    B)      Coal fire

    C)      Oil fire

    D)      Belt Conveyor fire

    E)      Coal fire & belt conveyor fire

     

    33)    Plan showing danger of mine from water is called

    A)      Underground plan

    B)      Hydrological plan

    C)      Gelogical plan

    D)      Water danger plan

    E)      Subsidence plan

     

    34)    Method of mining is dependent on

    A)      gas content of the seam

    B)      Thickness of the seam

    C)      depth of the seam

    D)      All of these

    E)      gradient of the seam

     

    35)    Fly rock can be controlled most appropriately by    .

    A)      inclination

    B)      Sub-grade drilling

    C)      spacing

    D)      stemming

    E)      burden

     

    36)    Which fault is uncommon in coalfields

    A)      step fault

    B)      trough fault

    C)      None of them

    D)      reverse fault

    E)      normal fault

     

    37)    In opencast workings, who shall ensure that dust control measures are implemented?

    A)      Sirdar

    B)      Safety Officer

    C)      Assistant Manager

    D)      Overman

    E)      All of them

     

    38)    Dangerous occurrence includes

    A)      any accident due to explosives

    B)      Fall from height of any excavation, loading or transport machinery

    C)      failure of dump or slide in opencast working

    D)      bursting of equipment under pressure

    E)      All of these

     

    39)    A competent person shall examine all the equipment, material and arrangements provided for fire-fighting once at least in      

    A)      fourteen days

    B)      None of them

    C)      six months

    D)      one month

    E)      seven days

     

    40)    Considering the current status, based on the monthly illumination survey, the Illumination Plan in opencast mines shall be brought up to date in     

    A)      every six months

    B)      every month

    C)      every week

    D)      every three months

    E)      None of them

     

    41)    In opencast workings, who shall ensue that adequate precautions as laid down in the Coal Mine Regulations, 2017 are taken before blasting operations are conducted?

    A)      Blasting Officer

    B)      Sirdar

    C)      Shotfirer

    D)      Overman

    E)      all of them

     

    42)    Dry/slippery road switch, manual service brake, parking brake, dynamic retarders are safety devices associated with         

    A)      Dozer

    B)      Motor Graders

    C)      None of them

    D)      Pay Loaders

    E)      Dumpers

     

    43)    While blasting in fire areas in an opencast coal mine, the depth of holes in the last overburden bench shall be such as to leave atleast thick overburden above the coal seam.

    A)      5 m

    B)      6 m

    C)      None of them

    D)      10 m

    E)      12 m

     

    44)    A fault whose general direction or trend is parallel to the strike of the strata is called a

    A)      None of them

    B)      strike fault

    C)      trough fault

    D)      traverse fault

    E)      step fault

     

    45)    In cast blasting, the optimimum stemming length is            

    A)      3 times the burden

    B)      2 times the burden

    C)      half of the burden

    D)      None of them

    E)      0.7-1.3 times of burden

     

    46)    In an opencast mine, where any road exists above level of surrounding area, it shall be provided with strong parapet wall/embankment with a width at top not less than 

    A)      3 m

    B)      2.5 m

    C)      2 m

    D)      None of them

    E)      1 m

     

    47)    The overall slope of a spoil bank shall not exceed 

    A)      1 vertical to 2.5 horozantal

    B)      1 vertical to 2 horizontal

    C)      1 vertical to 1.5 horozontal

    D)      1 vertical to 1 horizontal

    E)      None of them

     

    48)    Cutter unit, push beams, web-pillars etc. are associated with         

    A)      Road Grader

    B)      None of them

    C)      Dragline operations

    D)      Surface Miner

    E)      Highwall Mining System

     

    49)    The operator and persons near to the HEMM shall not be exposed to noise level that exceeds an eight hour equivalent continuous sound pressure level of 

    A)      85 dB(A)

    B)      100 dB(A)

    C)      90 dB(A)

    D)      None of them

    E)      110 dB(A)

     

    50)    Minimum ilumination requirement forWorkshop in opencast coal mines is     

    A)      None of them

    B)      70H,40V

    C)      60H,50V

    D)      50H,100V

    E)      100H,50V

     

    51)    Permissible Peak Particle Velocity (ppv) at the foundation level of Objects of historical importance not belonging to the mine owner with Dominant Excitation Frequency of more than 25 Hz is          

    A)      20 mm/s

    B)      10 mm/s

    C)      12 mm/s

    D)      16 mm/s

    E)      None of them

     

    52)    Which of them is not technique of Controlled Blasting?

    A)      Pre-splitting

    B)      Line Drilling

    C)      Deck Charging

    D)      Side Casting

    E)      Air Decking

     

    53)    The minimum intensity of Audio Visual Alarm provided with HEMM in open cast mines measured at a distance of 300 m distance is        

    A)      200 Lux

    B)      250 Lux

    C)      100 Lux

    D)      None of them

    E)      300 Lux

     

    54)    Where overhead lines cross a haulroad, clearance of lowest conductors above the raised body of biggest sized dumper shall not be less than   

    A)      None of them

    B)      5 m

    C)      3 m

    D)      6 m

    E)      2.4 m

     

    55)    In opencast mines, to use two types of explosives in any shot-hole, it is required  

    A)      to frame standing orders for safe use of explosives by the Manager

    B)      None of them

    C)      to perform blasting operations as recommended by explosive manufacturer

    D)      to take permission from the Regional Inspector

    E)      to perform blasting operations as recommended scientific study

     

    56)    The minimum sound level of Audio Visual Alarm provided with HEMM in open cast mines measured at a distance of 1.2 m distance is         

    A)      100 dB(A)

    B)      140 dB(A)

    C)      None of them

    D)      90 dB(A)

    E)      110 dB(A)

     

    57)    During blasting of deep-holes in opencast coal mines, at what distance of the shot holes sleeping with explosives no person shall be allowed to be present?

    A)      anywhere within 50 m

    B)      anywhere within 100 m

    C)      anywhere within 60 m

    D)      anywhere within 150 m

    E)      None of them

     

    58)    Who shall provide adequate number of accurate and reliable survey instruments for carrying out of all survey and levelling work ?

    A)      Manager

    B)      Surveyor

    C)      Owner or agent

    D)      None of them

    E)      Nominated owner

     

    59)    Which of these is not a technology for Proximity Warning System for large dumpers?

    A)      Ultrasonic Sensors

    B)      RFID Systems

    C)      GPS Based Systems

    D)      Audio Visual Alarms

    E)      Radar System

     

    60)    Upto what distance from the opencast mine boundary no working is permitted as per CMR 2017?

    A)      90m

    B)      15m

    C)      30m

    D)      7.5m

    E)      60m

     

    61)    Semi-Automatic fire suppression system shall be provided for trucks and dumpers of upto what capacity?

    A)      35 tonne

    B)      50 tonne

    C)      85 tonne

    D)      120 tonne

    E)      300 tonne

     

    62)    In any opencast coal mine, if Bw is bench width and Bh is bench height, then always          .

    A)      Bw ≥ Bh

    B)      Bw < Bh

    C)      Bw = Bh

    D)      Bw = 0.5 x Bh

    E)      Bw doesn't depend on Bh

     

    63)    By which of the following the slope of spoil bank is determined?

    A)      Fleet Angle

    B)      None of the options

    C)      Right angle

    D)      All of the above options

    E)      Angle of repose

     

    64)    Unless otherwise provided, mine plans shall be on a scale having representative factor of    

    A)      2000: 1 or 1000: 1

    B)      1200:1

    C)      None of them

    D)      2000:1 only

    E)      1000:1 only

     

    65)    The effective position of box cut for a deposit, where ratio of OB : Ore is least should be

    A)      None of the options

    B)      At boundary of mineral deposit

    C)      At any place

    D)      At high seam solpe end

    E)      At the middle of the boundary

     

    66)    Blasting of hot holes in a surface mine is possible by          .

    A)      Charging and firing to be completed within 2 hrs

    B)      All the Options

    C)      Initiation by nonel

    D)      Lowering the temperature below 800 C

    E)      Using emulsion or slurry explosives

     

    67)    Dust exposure of which of the following categories of persons shall be determined by personal dust sampler also?

    A)      Dozer/Grader operators and helpers

    B)      Drillers /Dressers

    C)      Dumper and Tipper operators and helpers

    D)      All of them

    E)      Overman or other competent person

     

    68)    Every device used for prevention and suppression of dust produced by any machinery, equipment or process shall be inspected once in every   

    A)      twenty one days

    B)      fourteen days

    C)      seven days

    D)      ten days

    E)      None of them

     

    69)    Every vehicle used for the transport of explosives in bulk shall be carefully inspected by a competent person once in every 24 hours to ensure that   

    A)      lights, brakes and steering mechanism are in good working order

    B)      the electric wiring is well insulated and firmly secured

    C)      fire extinguishers are filled and are in place

    D)      the fuel tank and feed lines are not leaking

    E)      All of them

     

    70)    Coal includes

    A)      Peat

    B)      Anthracite

    C)      Lignite

    D)      Bituminous Coal

    E)      All of these

     

    71)    Minimum illumination requirement along the conveyor in opencast coal mines is

    A)      None of them

    B)      30H

    C)      25H

    D)      20H

    E)      15H

     

    72)    Permissible limit of dust concentration in coal mines is        .

    A)      Not exceeding 5 mg/m3

    B)      Not exceeding 7.5 mg/m3

    C)      Not exceeding 10 mg/m3

    D)      Not exceeding 1 mg/m3

    E)      Not exceeding 3 mg/m3

     

    73)    Current CMR speaks about height of spoil bank. What is that height in m.

    A)      30m

    B)      45m

    C)      10m

    D)      20m

    E)      60m

     

    74)    Minimum illumination requirement for rest shelter in opencast coal mines is            

    A)      25H

    B)      30H

    C)      40H

    D)      None of them

    E)      35H

     

    75)    A fracture in rocks usually associated with lateral or vertical displacement of fractured beds is called a

    A)      fold

    B)      fault

    C)      None of them

    D)      roll

    E)      swilley

     

    76)    In Ammonium Nitrate Fuel Oil, what percentage of oil tends to lower sensitiveness?

    A)      excess of 15

    B)      excess of 25

    C)      none of them

    D)      excess of 10

    E)      excess of 12

     

    77)    The specific gravity of which coal is the highest?

    A)      Anthracite

    B)      Lignite

    C)      Bituminous coal

    D)      Peat

    E)      None of them

     

    78)    Which is not a common type of slope failure in opencast coal mines?

    A)      Toppling Failure

    B)      Palne Failure

    C)      Transverse Failure

    D)      Circular Failure

    E)      Wedge Failure

     

    79)    While blasting in fire areas in opencast coal mines, all persons from the area shall be withdrawn during charging of the holes if concentration of CO is found to be            

    A)      more than 50 ppm

    B)      more than 100 ppm

    C)      None of them

    D)      more than 60 ppm

    E)      more than 90 ppm

     

    80)    A strike fault is also called a

    A)      traverse fault

    B)      step fault

    C)      trough fault

    D)      None of them

    E)      longitudinal fault

     

    81)    Relate the most distinguishing feature of Jharia coal fields among all Indian coal fields.

    A)      Thick seams

    B)      Mutiple seams with varied thickness

    C)      Seams with dirt bands

    D)      Seams with numerous slips

    E)      Couple of seams with identical thickness

     

    82)    Helpers of shot-firers shall not use            

    A)      Battery operated watches

    B)      Leather shoes with leather soles without hobnails

    C)      Cotton cloths

    D)      All of them

    E)      Conductive type of footwear

     

    83)    Who shall fix the maximum number of shots that a shot-firer may fire in any one shift?

    A)      Agent

    B)      None of them

    C)      Blasting Officer

    D)      Manager

    E)      Safety Officer

     

    84)    A fault whose general direction or trend is parallel to dip of the beds is called

    A)      None of them

    B)      traverse fault

    C)      step fault

    D)      trough fault

    E)      normal fault

     

    85)    Minimum illumination requirement in In-pit Crusher/Feeder Breaker in opencast coal mines is    

    A)      40H

    B)      25H

    C)      20H

    D)      None of them

    E)      30H

     

    86)    To ensure adequacy of illumination, the manager of every opencast mine shall arrange to conduct Lighting Survey once at least in  

    A)      every month

    B)      every year

    C)      None of them

    D)      every week

    E)      every six months

     

    87)    Loads in vehicles plying in opencast coal mines having an overhang in excess of shall be clearly marked by ared flag during the day and red light at night.

    A)      None of them

    B)      1.2 m

    C)      1.0 m

    D)      2.0 m

    E)      2.5 m

     

    88)    Any spoil bank when exceeds 30m height, then what will be the overall slope?

    A)      1 vertical to 5 horizontal

    B)      1 vertical to 1.5 horizontal

    C)      1 vertical to 1 horizontal

    D)      1 vertical to 3horizontal

    E)      1 vertical to 2 horizontal

     

    89)    Minimum illumination requirement for parking yard in opencast coal mines is

    A)      40H

    B)      45H

    C)      None of them

    D)      50H

    E)      25H

     

    90)    Having regard to the task to be performed, who shall ensure that the shot holes are not over-charged or under- charged?

    A)      Assistant Manager

    B)      Blasting Officer

    C)      None of them

    D)      Manager

    E)      Shot-firer

     

    91)    During blasting of deep-holes in opencast coal mines, the Blasting Officer shall be a holder of          

    A)      At least a Sirdar's Certificate

    B)      at least second class manager's certificate

    C)      First class manager’s certificate

    D)      None of them

    E)      at least Overman's Certificate

     

    92)    Which of the following agent is used to give sheath in a permitted sheathed explosive

    A)      NG

    B)      TNT

    C)      NaCl

    D)      Charcoal

    E)      NaHCO3

     

    93)    In case of a disputed mine boundary, till the issue is determine by a court of law, from the boundary claimed by the owner of the adjacent mine, no working shall be made within a distance of            

    A)      45 m

    B)      7.5 m

    C)      15 m

    D)      100 m

    E)      None of them

     

    94)    Of the given types of geoogical discontinuities and disturbances,    are most common in Indian coalfields

    A)      Igneous Intrsuions

    B)      Washouts

    C)      Folds

    D)      Faults

    E)      Ball coal

     

    95)    In opencast coal mines Illumination Scheme shall be formulated by the    

    A)      Manager

    B)      Agent

    C)      safety officer

    D)      None of them

    E)      Owner

     

    96)    No smoking, naked lights or open fires should be permitted at what minimum distance from water proof bags containing Ammonium Nitrate Fuel Oil?

    A)      10 m

    B)      25 m

    C)      20 m

    D)      15 m

    E)      None of them

     

    97)    Minimum illumination requirement for Transfer points and drive/tail end area of conveyors in opencast coal mines is          

    A)      None of them

    B)      20H

    C)      40H

    D)      30H

    E)      35H

     

    98)    In case of opencast workings, no person shall be appointed as a shot-firer unless he holds   

    A)      a Manager's Certificate

    B)      Overman's Certificate

    C)      Shot-firer's Certificate granted under regulation 12 of the Coal Mines Regulations, 1957

    D)      All of them

    E)      Sirdar's Certificate

     

    99)    In cast blasting, for the operation to be economical, the bench height shall not be less than   

    A)      25 m

    B)      15 m

    C)      None of them

    D)      30 m

    E)      20 m

     

    100)  Within what distance of the shot holes sleeping with explosives, no person shall be allowed to be present       

    A)      None of them

    B)      100 m

    C)      50 m

    D)      30 m

    E)         60 m



    CLICK ME TO DOWNLOAD Question Paper _ Key of SECOND CLASS RESTRICTED UNDER CMR - WINNING AND WORKING




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