Mine Supports And Strata Control — Part 2 MCQs with Explanations

More than 2 : 1 is the correct answer to “For testing a specimen in laboratory the length and diameter ratio should be”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Subsidence is the correct answer to “Depression of Ground surface called”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

30 - 40 is the correct answer to “In resin capsule the mixture hardens within . . . . . . . . seconds and become solid.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Expansion shell bolts is the correct answer to “The guide rail of Alimak raise climber is fixed on the wall by”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Tapping test is the correct answer to “The roof in coal mines tested by”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Rate of penetration increases is the correct answer to “As the bit gauge decreases.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

200 - 500mm is the correct answer to “In the tapered prop, length of tapeing at one end is . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Metal is the correct answer to “Fibre glass rock bolts have gained wide popularly in . . . . . . . . mining.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

4 - 6 is the correct answer to “The roof is easily cavable, if the protodyakov index is . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Soft floor is the correct answer to “A base lifting device for some of the shield support is required in longwall face; when”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Fracture is the correct answer to “Crack formed under tensile stress and shear stress called”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Tensile strength is the correct answer to “The maximum stress of metals can withstand without breaking or without failure for specific number of stress reveals.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Late bearing supports is the correct answer to “The yeilding props which exerts resistance with continuous increase in yeild called”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

1.2 m is the correct answer to “The minimum length of sleeper used as chock support if the roof height of 3 m to be supported”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Wedges is the correct answer to “The chock is tightend against the roof by hammering . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Option "Tensor" is the correct answer for this question under Mine Supports And Strata Control.

54 mm is the correct answer to “Plate shows a triaxial test cell for specimens upto . . . . . . . . diameter.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

40T is the correct answer to “Normal load, in hydraulic prop.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

depth is the correct answer to “In pressure arch theory, lateral forces, intensity of which increases with . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

50% is the correct answer to “Rejects are coals whose ash + moisture is in excess of”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

310 mm is the correct answer to “The length of capsule is”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Induced stress in pillars is the correct answer to “The stress cells are used to measure . . . . . . . . in u/g mines.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Harmonic Mining is the correct answer to “Subsidence can be controlled by”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Prop which is so set that its axis is in between vertical and normal to seam is the correct answer to “What is an under set prop.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Green is the correct answer to “The unseasoned timber called as”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

All of these is the correct answer to “Roof bolts principle action depend on”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

All of these is the correct answer to “The bolts used in mines are”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

25 cm is the correct answer to “Width of flat piece is . . . . . . . . used for setting props.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Coin chodia fracture is the correct answer to “Highest rank of coal, Anthracite have”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

20 is the correct answer to “Coal with volatile matter of about . . . . . . . .% have the lowest UCS.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Fire clay is the correct answer to “Any clay or shale which does not fuse, below 158°C called”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

2 is the correct answer to “Number of holes required to errect a timber bar”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

60° is the correct answer to “Chock shields can work in steeply inclined seams upto maximum . . . . . . . . deg.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

150 - 230 is the correct answer to “Bulk strength of the timber prop is . . . . . . . . kg/cm 2 .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Flat base is the correct answer to “If the prop has to be set on loose rock, it should be placed on . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

2 is the correct answer to “The pressure arch in longwall workings have its apex or crest at a mm height above the seam at nearly . . . . . . . . times the length of face.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Winding Engineer is the correct answer to “First aid certificate is not required for”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Setting load is the correct answer to “The load does not effect the load yeild characteristic of the prop.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Capule is the correct answer to “In which contains separated pre-measured quantity of filled polyestered and resin catalyst called”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

500 mm is the correct answer to “Timber bar placed in the holes of minimum depth of . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.