GATE 2017-2018 :: GATE Mining Engineering
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A flat bauxite deposit has thickness of 10 m with an average density of 2200 kg/m3. The grade values and the sample coordinates are as shown in the table. To carry out reserve estimation using triangular method, the triangles are constructed as shown in the figure.
The alumina content in million tonnes, in the region comprising the three triangles is _________ - A bucket wheel excavator with 20 buckets of capacity 0.5 m3 each, rotates at 5 rev/min. The bucket fill factor is 80%. The excavator loads on to 1200 mm wide belt conveyor. The cross-section area (m2) of the material on the belt is 0.1B2, where B is the belt width in m. The minimum speed of the belt in m/s to avoid spillage of material is
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A simplex tableau shown below is generated during the maximization of a linear programming problem using simplex method
After one iteration, the value of the objective function becomes -
Given the following,Machine ComponentP. Dint header 1. CowlQ. Coal plough 2. Cutting chainR. Road header 3. Loading apronS. Shearer 4. Static set of bitsthe correct match is
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Given the following,Rescue apparatus CharacteristicP. Draeger BG-4 1. Open circuit chemical oxygen self-rescuerQ. MSA IW-65 2. Filter type self-rescuerR. Draeger Pulmotor 3. Self-contained breathing apparatusS. Oxyboks 4. Resuscitation apparatusthe correct match is
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Given the following,Equation/formula/law ApplicationP. Bernoulli equation 1. Pressure loss in laminar flow of fluidQ. Poiseuille equation 2. Drag loss due to regular obstructions in fluid flowR. Bromilow's formula 3. Energy conservation in ideal fluid flowS. Stokes law 4. Terminal settling velocity of fine particles in fluidthe correct match is
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Four psychrometric processes P, Q, R and S are shown in the psychrometric chart below.
These processes respectively represent -
Given the following differential equation d2y/dx2 + 7 dy/dx + 12y = 0the general solution is
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Given the following,Mining method TechniqueP Thick seam extraction 1 Double unit faceQ Bord and pillar extraction 2 Jet cuttingR Longwall face development 3 Inclined slicingS Hydraulic mining 4 Half moon methodthe correct match is
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