Mine Supports And Strata Control — Part 1 MCQs with Explanations

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

Ellipse is the correct answer to “The preferred shape of an opening in uniaxial stress field as”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Laminated is the correct answer to “In coal mines roof consists of chiefly”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Durain is the correct answer to “Most of the Gondwana coals from any field are rich in . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Height of extraction is the correct answer to “Critical area of extraction not depend on the following”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Friction is the correct answer to “Which prop can serve a long life for sand stowing faces.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Setting load is the correct answer to “It is that load, which is set by a setting device, imparted by an yeilding prop.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Sides is the correct answer to “Timber bar errected on to the coal pillar . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Vertical is the correct answer to “The prop is erreeted in flat seams”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Roof bolts is the correct answer to “Freshly exposed roof after blasting is effectively and quickly supported by”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Roof bolt is the correct answer to “The support not gives warning of impending roof failure.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Monidih is the correct answer to “The self advancing supports are used in coal mines on prop free front long wall faces and are introduced in India in . . . . . . . . colliery.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Rock bolts is the correct answer to “Supporting system used in coal mine gate roads in general is”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Lateral stress is the correct answer to “Compressive strength increases with”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Glass is the correct answer to “Catalyst tube used in capsule bolting made of”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

0.3m is the correct answer to “The shale roof some times gives a ringing sound, if thick ness of shale greater than . . . . . . . .”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

62 kgf is the correct answer to “Weight of hydraulic prop.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Deep mines is the correct answer to “Rock burst occur in”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Load bearing capacity is the correct answer to “It is the load at which an axially loaded prop reaches its elastic limit or at which it begins to buckle.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Mild steel is the correct answer to “The bearing plate is made of”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Mine manager is the correct answer to “The systamatic timbering rules framed by the”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Closed circuit is the correct answer to “The build up pump provided in hydrualic prop is comes under”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

5 cm is the correct answer to “The thickness of flat base piece not less than . . . . . . . . used for setting props”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

$${\mu Q}$$ is the correct answer to “If the two bodies are held in contact and one moves with respect to the other, the force P for just moving the body is”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

12.5 kg/mm2 is the correct answer to “Compressive strength of curved resin”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Steel arches is the correct answer to “The support employed in semi parmanent and parmanent road ways.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Jharia coal fields is the correct answer to “In terms of resourcefulness [Reserveper km 2 ] which of the Indian coal fields in on top position.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Double acting signal telescope is the correct answer to “As for roof support DAST stands for”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Brittlenes is the correct answer to “The stored energy in the material called”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Sand stone is the correct answer to “The roof which will give warning before fracture.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

1 - 1.3 m is the correct answer to “The pair of holes drilled for roof stitching at internal of”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

100mm, 125mm is the correct answer to “If the height of gallery is 1.2 to 1.8m the diameters of the props at thick end.”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

All of these is the correct answer to “The main purpose of lid is”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Bed separation is the correct answer to “The phenomena of the rocks in immediate roof bend down wards under their own weight and tend to separate from one an other as”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

ROD is the correct answer to “Barton, choosed six parameter to describe rock mass quality 'Q' four of them connected with joint characteristics and fifth one takes into account i.e stress reduction factor, the sixth parameter is”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Hydrogen + Oxygen is the correct answer to “Transformation from wood to anthractie is accompanied by progressive elimination of”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

All is the correct answer to “RMR signifies”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Split is the correct answer to “Pressure drop will be larger at”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

Weak is the correct answer to “The shear forces, intensity is lowest when the coal and floor beds are”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.

13.5 kg/sq.mm is the correct answer to “Crushing strength of sand stone”. This question is standard in competitive examination syllabi for Mine Supports And Strata Control.