Q521
Open questionCapacity of slusher is . . . . . . . . tph.
Select an option to see the answer and solution.
Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
911
Questions
27/46
Page
Pick an option on a question to see the right answer and solution.
Q522
Open questionThe type explosives selected for breaking in hard rock and tunnels.
Select an option to see the answer and solution.
Q523
Open questionUsing the following data, calculate the NVP in a mine
Depth of mine = 400 m;
Barometer reading in DC shaft 750 mm of Hg;
Average temperature in DC shaft 28°C;
Average temperature in UC shaft 38°C.
Depth of mine = 400 m;
Barometer reading in DC shaft 750 mm of Hg;
Average temperature in DC shaft 28°C;
Average temperature in UC shaft 38°C.
Select an option to see the answer and solution.
Q524
Open questionThe rearrangement of pit bottom layout distroys the strength of . . . . . . . .
Select an option to see the answer and solution.
Q525
Open questionCalculate the wg. produced by 3 m dia fan running at 250 rpm and deliver 6000 m3/min of air, if the blades are radial in mm w.g of the blade tip speed is 39.3 m/sec.
Select an option to see the answer and solution.
Q526
Open questionWeight of gas mask . . . . . . . . kg.
Select an option to see the answer and solution.
Q527
Open questionModerate seams the thickness of coal in between.
Select an option to see the answer and solution.
Q528
Open questionThe formula for finding the of air flow in m3/min.
Select an option to see the answer and solution.
Q529
Open questionThe detonating pressure in blasting hole occurs.
Select an option to see the answer and solution.
Q530
Open questionThe ignition temperature of anthracite coal is nearly . . . . . . . .°C.
Select an option to see the answer and solution.
Q531
Open questionIn a mine of height resistance, the series arrangement of fans gives considerable increase in quantity of air flowing posibly more than . . . . . . . . %.
Select an option to see the answer and solution.
Q532
Open questionThe incline in coal seam should have practically equal area up to a maximum limit . . . . . . . . meters on the strike by development may be considered for belt conveyas.
Select an option to see the answer and solution.
Q533
Open questionSlusher loader can operate at a gredient of
Select an option to see the answer and solution.
Q534
Open questionThe sampling pipe should be extended that . . . . . . . .m inside the fire stoping.
Select an option to see the answer and solution.
Q535
Open questionAn excavation adjoining the shaft at each of the different levels where men and materials are removed or delivered.
Select an option to see the answer and solution.
Q536
Open questionThe principle behind the air screw fan . . . . . . . .
Select an option to see the answer and solution.
Q537
Open questionShock energy of detonation increases rapidly with . . . . . . . .
Select an option to see the answer and solution.
Q538
Open questionIn case of opencast working, after shots are fired which of the following things a Shot-firer/Blaster shall do?
Select an option to see the answer and solution.
Q539
Open questionEquivalent orifice theory is advanced by
Select an option to see the answer and solution.
Q540
Open questionThe incline in coal seam should have practically equal area upto a maximum of . . . . . . . . meters on the strike by development by rope haulage.
Select an option to see the answer and solution.