Drilling and Blasting MCQs Questions & Answers

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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-10 section-9

Each section contains 100 MCQs on Drilling and Blasting .

The fan characteristics help in selecting a particular mine?

A) Efficiency-capacity characteristics B) Head-capacity characteristics C) Hydraulic losses-mechanical losses characteristics D) Power-capacity fan characteristics

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Maximum quantity of air leaks in a coal mine ventilation is at

A) Brattice cloth B) Surface air lock C) Door D) Air crossing

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Gun powder having effect

A) Shattering B) Heaving C) Burning D) Grain to strom

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In a continuous miner face, why forcing ventilation undesirable.

A) Very costly B) Occupies whole cross section of heading C) Exposes workers to high concentrations of dust D) Unable to cope up with the rate of advance of continuous miner

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The self heating of coal in underground mines the ratio CO/O₂ defficiency gradually . . . . . . . .

A) Decreases B) Increases C) Some times increases and some times decreases D) Constant

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Blades of rotor of air screw fan, the angle or pitch can be varried by . . . . . . . .

A) 5° - 10° B) 10° - 15° C) 15° - 20° D) 20° - 30°

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In which ventilation system the amount of coal dust is less . . . . . . . .

A) Antitropal B) Homotropal C) Longwall D) All of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

On the rescue plan and stone dusting plan should also be shown the

A) Position and type of barrier B) Frequency of barrier C) Rate of advance of barrier D) Serial Number of barrier E) All of above

Discuss

Answer & Solution

Answer: Option E

No explanation is given for this question. Let's Discuss on Board

No shot shall be fired unless the length of fuse is at least "A" meter. A is given by

A) 1.2 m B) 1.8 m C) 2.5 m D) 4 m

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

100

Identify the wrong statement pit bottom air lock.

A) has at least 3 doors B) has atleast one door that has provision for latching C) all doors are principle designed open toward high pressure side of air D) prevent short circuiting of air when the flow is reversed in coal mines

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Drilling and Blasting MCQs Questions & Answers | Mining Engineering