MCQ IN COAL INDIA (PART-3)

*Flame trap or flame arrestor is used with               (1) Conveyor   (2)direct haulage  (3)diesel locomotive  (4)shaker conveyor.                                                                                                                     *The flame trap of diesel locomotive is liable to choke up due to                                                            (1)dust in air (2)impure engine oil  (3)narrow aperture of plates (4)poor filter                                                                                                                                                                                                             *The approximate length of conveyor of loop take up portion of aB/ Conveyor is A% of the total conveyor length.A is given by                       (1)0.5%  (2)1%  (3)2%  (4)4%                                                                                                                      *Which of the following can be used safely right up to the face of coal mine?                                        (1) battery loco  (2)diesel loco  (3)trolley wire loco (4)all of these                                                                                                                                             *Turbine or Centrifugal pump works at its best efficiency while dealing with                                     (1)exact head  (2)reduced head  (3)Simple valute casing  (4)diffusion channel                                                                                                                *Name of the machine that is used to give a suitable curvature to a piece of rail?                       (1)backstay  (2)puller  (3)Jim crow  (4)axle                                                                                                 *Name of the metod of speed control of large winders usually of above 88kW?                             (1)OCB filter  (2)ACB filter  (3)ward Leonard method   (4)rheostatic control method                                                                                                         *What is the exact location of keps?                      (1)at pit bottom  (2)at pit top  (3)at mid set landing   (4)at top of the cage                                   *Detaching hook is a safety divice which acts when                                                                             (1)the cage is at bottom (2)the cage is pit top  (3)over wind takes place  (4)the cage is mid landing position                                                           *Misaligned machine component create one of the following                                                                 ( 1)power overload (2)bending moment  (3)machine fatigue ness  (4)reduced rpm                                   
Mining Engineering

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Mining Engineering

First-aid station

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First-aid  station is a place fixed by the manger for rendering first-aid to person injured.Every first-aid station is provided with equipment as prescribed in the Third schedule of mines Rules namely: a stretcher and two blanket,Sets of splints(1.4m,0.9m,0.3m,)and sufficient tringular bandages.First-aid boxes(or cupboards),one per150 person,containin sufficient supply of large and small dressings and burn dressings,sufficient supply of sterilised cotton and adhesive plaster,roller bandages,Dettol or other antiseptic solution,a tourniquet,scissors and safety pins,soap.                                                  First aid station shall be provided at the following places On surface:-                     At pit top/incline mouth.In workshop,screening plant and    ...
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Audio visual alarm

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  When a truck or dumper backs up a person standing behind the vehicle may get crushed.To alert such a person truck/dumpers are provided with audio visual alarm.As soon as the vechile is put in reverse gear, a special horn starts blowing and the backlight flashes.It is a statutory requirements that truck,dumper or loader shall not be run unless the audio visual alarm is working.
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MINE WORKING

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  Opencast working--In open cast working,the following precautions shall be observed,namely:                                          In alluvial soil,morum,gravel,clay,debris or other similar ground-;*the side shall be sloped at an angle of sefty not exceeding 45degree from the horizontal or such other angle as the regional inspector may permit by an order in writing are subject to such conditions as he may specify therein;or the side shall be kept benched and the hight of any bench shall not exceed 1.5meter and the breadth thereof shall not be less than the height:।       Provide that the regional inspector may,be an order in writing and subject to such conditions as he may specify therein, exempt form the operation of his clause any working in the case of which special difficult exist,which in his opinion make compily with the provisions their ...
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