Drilling and Blasting MCQs Questions & Answers

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-2 section-3

Auxiliary fan used for

A) Clearing roof fall which is not obstructed by normal air supply B) Long headings thus constitutes dead ends C) Narrow roadways in junctions D) None

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Answer & Solution

Answer: Option B

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Access to the deposit situated deep in depth.

A) Incline B) Adit C) Decline D) Shaft

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Answer & Solution

Answer: Option D

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Weight of self rescuer is

A) 0.9 kg B) 0.5 kg C) 1 kg D) 1.2 kg

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Answer & Solution

Answer: Option C

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The design of pit top and pit bottom layouts done basing on the following objects.

A) Use of shaft full capacity B) Use of minimum number of tubs in circuit C) Minimum number of operatives D) Maintaining steady flow tubs E) All of above

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Answer & Solution

Answer: Option E

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Which of the following is not dependent on efficient breaking of rock?

A) correct type of explosive B) correct amount of charge per hole C) type of exploder D) proper stemming

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Answer & Solution

Answer: Option C

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Use of sharp picks, water sprays may reduce dust formation at the faces.

A) No B) Yes C) Some times No/Yes D) None

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Answer & Solution

Answer: Option B

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The finished diameter of the shaft varies generally from . . . . . . . .

A) 4.2 - 6.7 m B) 3 - 6 m C) 2 - 8 m D) 10 - 12 m

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Answer & Solution

Answer: Option A

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For coal seam of moderate dip the shaft may be located in the . . . . . . . . property.

A) Dip B) Rise C) Middle D) $$\frac{1}{3}$$ from dip

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Answer & Solution

Answer: Option C

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The delay detonators and non-delay detonators are distinguished physically by

A) the colours of lead wires B) base charge C) priming charge D) neoprene plug

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Answer & Solution

Answer: Option A

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The resistance of roadways in series is R = . . . . . . . .

A) $${R_1} - {R_2} - {R_3}.\,.\,.\,.\,.\,{R_n}$$ B) $${R_1} + {R_2} + {R_3}.\,.\,.\,.\,.\,{R_n}$$ C) $$\frac{1}{{{R_1}}} + \frac{1}{{{R_2}}} + \frac{1}{{{R_3}}}.\,.\,.\,.\,.\,\frac{1}{{{R_n}}}$$ D) $$\frac{1}{{\sqrt {{R_1}} }} + \frac{1}{{\sqrt {{R_2}} }} + \frac{1}{{\sqrt {{R_3}} }}.\,.\,.\,.\,.\,\frac{1}{{\sqrt {{R_n}} }}$$

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Answer & Solution

Answer: Option B

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