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AP ECET Mining Engineering Paper 2019
| Sr. No. | Question |
| 1 | The rate of emission of inflammable gas ( in cubic meter) per tonne of coal raised in degree-II gassiness miens is
(a) Less than 1 (b) 1 – 10 (c) More than 50 (d) 10 – 50 Ans –(b) |
| 2 | In India, the deposit is referred as thick seam, when the thickness is _________meters.
(a) 1.5 – 4.5 (b) Below 1.5 (c) 4.5 – 9 (d) More than 9 Ans –(c) |
| 3 | Reclamation or backfilling activity comes under the category of
(a) Ancillary mining operations (b) Pre-mining operations (c) Post-mining operations (d) Actual mining operations Ans –(a) |
| 4 | The technique involved in improving the concentration of mineral as per marketable demand is known as ______
(a) Ore stocking (b) Ore beneficiation (c) Caving (d) Stowing Ans –(b) |
| 5 | ___________is the tool used to keep the drill rods in position against falling back into the borehole in the activity of drilling.
(a) Bull dog safety damp (b) Power winch (c) Rocking lever (d) Retaining key Ans –(d) |
| 6 | Supply of water into drill hole during drilling operation is done for the purpose of
(a) Prevention of deviation (b) Reducing drill speed (c) Protecting drill machine (d) Lubrication of drill bit Ans –(d) |
| 7 | Percussive manual drilling is used up to a depth of _________meters.
(a) 100 (b) 30 (c) 300 (d) 400 Ans –(b) |
| 8 | __________are unsheathed explosives Ajax-G, Viking-G, Godnyte among permitted explosives.
(a) P3 (b) P2 (c) P1 (d) P5 Ans –(c) |
| 9 | The rate at which detonation wave passes through the column of explosives is known as __________
(a) Velocity of detonation (b) Strength of explosives (c) Density of explosives (d) Stability of explosives Ans –(a) |
| 10 | _______type of explosives consists of flashing mixture.
(a) Plain detonator (b) Safety fuse (c) Cardtex fuse (d) Electric detonator Ans –(d) |
| 11 | Brine solution is used in ________method of shaft sinking.
(a) Freezing (b) Caisson (c) Pilling (d) Cementation Ans –(a) |
| 12 | Intermittent groove constructions that are erected around shaft walls for collection of local percolated water are known as _________
(a) Wailing scaffold (b) German tubs (c) Garland curbs (d) Caisson Ans –(c) |
| 13 | The ration of cement, sand and coarse aggregate in monolithic concrete lining is _______
(a) 1 : 4 : 3 (b) 1 : 2 : 4 (c) 1 : 4 : 2 (d) 2 : 4: 1 Ans –(b) |
| 14 | A rock formation with dome folding pattern can be identified by ________
(a) Square like shapes (b) U- like shapes (c) Inverted bowl-like shapes (d) Parallel and straight lines Ans –(c)
|
| 15 | The span of Conrad discontinuity that lies between SIAL and SIMA is __________kilometers.
(a) 6.4 (b) 8.62 (c) 5.7 (d) 9.24 Ans – (a) |
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