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Drilling and Blasting MCQs Questions & Answers | Mining Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Drilling and Blasting. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Drilling and Blasting chapter is particularly important for students studying mining engineering. Page-3 section-6

Each section contains 100 MCQs on Drilling and Blasting .
21
Capacity of slusher is . . . . . . . . tph.
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Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
22
The type explosives selected for breaking in hard rock and tunnels.
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
23
Using 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.
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
24
The rearrangement of pit bottom layout distroys the strength of . . . . . . . .
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Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
25
Calculate 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.
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
26
Weight of gas mask . . . . . . . . kg.
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
27
Moderate seams the thickness of coal in between.
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
28
The formula for finding the of air flow in m3/min.
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Answer & Solution
Answer: Option A
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29
The detonating pressure in blasting hole occurs.
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
30
The ignition temperature of anthracite coal is nearly . . . . . . . .°C.
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board