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-7 section-5

Each section contains 100 MCQs on Drilling and Blasting .

The size of the incline usually, if it is endless haulage way.

A) 4.2 m × 2 m B) 3 m × 1.8 m C) 2 m × 1.8 m D) 2 m × 2 m

Discuss

Answer & Solution

Answer: Option A

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

The direction of rotation of axial flow fan simply changed by . . . . . . . .

A) Changing the rotation of motor B) By changing the doors C) Changing blades D) All of these

Discuss

Answer & Solution

Answer: Option A

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

The law related to H.P speed or quantity is . . . . . . . .

A) $$\frac{1}{{HP}} \propto {N^2}{\text{ or }}{V^2}{\text{ or }}{Q^2}$$ B) $$HP \propto {N^3}{\text{ or }}{V^3}{\text{ or }}{Q^3}$$ C) $$\frac{1}{{{N^3}}} \propto {V^3}{\text{ or }}{Q^3}{\text{ or }}{N^3}$$ D) None

Discuss

Answer & Solution

Answer: Option B

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

Cross measure drifts in coal mines usually of . . . . . . . .

A) Moderate length B) Quite long C) Quite short D) All of these

Discuss

Answer & Solution

Answer: Option A

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

High rank coal with high carbon content (say over 85% d.m.m.f basis) is liable to self heating is . . . . . . . .

A) More B) Less C) Medium D) All of these

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Answer & Solution

Answer: Option B

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

In which DGMS Circulars the conditions for blasting in fire areas in opencast coal mine has been stipulated?

A) 2/2000, 5/1975 B) 3/2001, 11/2009 C) 2/1985, 2/1990 D) 7/2002, 4/2010

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Answer & Solution

Answer: Option C

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

What is ventilation efficiency quotient

A) Ratio of quantity of air reading last connection and quantity of air forced down by fan B) Ratio to velocity to quantity C) Ratio to speed to pressure D) The ratio of quantity of air reaching the last ventilation connection and quantity of air entering the district

Discuss

Answer & Solution

Answer: Option D

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

It is an area in a mine having number of working faces.

A) District B) Barrier C) Rib D) Chowkidar

Discuss

Answer & Solution

Answer: Option A

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

The ratio between power output to power input called . . . . . . . .

A) Manometri cefficiency B) Mechanical efficiency C) Overall efficiency D) None

Discuss

Answer & Solution

Answer: Option B

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It is observed that the coal containing less than . . . . . . . of volatile matter, calculated on dry ash free basis is not likely to propagate flame.

A) 9% B) 10% C) 12% D) 13%

Discuss

Answer & Solution

Answer: Option D

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

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Drilling and Blasting MCQs Questions & Answers | Mining Engineering