Drilling and Blasting MCQs Questions & Answers | Mining Engineering Page-1 section-5

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10

1.
By using of air leg relieves the operation of . . . . . . . . . involved in holding drill.

A. Fatigue

B. Stress

C. Strain

D. Weight

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2.
A roadway in the ore body which follows strike.

A. Sublevel string

B. Level

C. Dip

D. Rise

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3.
The VOD of primer in m/sec in m/sec

A. 5000

B. 6000

C. 7000

D. 8000

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4.
In metal mining terminology development of mine means formation of . . . . . . . .

A. Network of shafts

B. Drifts

C. Rises

D. All of these

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5.
What do you understand by power of ventilation.

A. Leakage of ventilation path

B. Size of regulations

C. Air flow through duct of varying cross section

D. Rate at which work is done to maintain the air flow through a system

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6.
Lower inflammability of coal dust is . . . . . . . .

A. 2 gm/cc

B. 1 gm/cc

C. 3 gm/cc

D. 5 gm/cc

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7.
Maximum velocities of ventilating air at working faces in development/depillaring

A. 6 m/sec

B. 4.8 m/sec

C. 4 m/sec

D. 8 m/sec

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8.
What will be the RF of 1.8 cm on the maps represent 9 km.

A. 1 : 500000

B. 1 : 50000

C. 1 : 5000

D. 1 : 20000

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9.
In degree II gassy mines the rate of emission of gas m³/t of coal raised is . . . . . . . .

A. 1 - 5

B. 5 - 10

C. 1 - 10

D. 10 - 20

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10.
The w.g developed by the axial flow fan . . . . . . . . in cm.

A. 6.5

B. 8.5

C. 12.5

D. 15.5

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Drilling and Blasting MCQs Questions & Answers | Mining Engineering

1. By using of air leg relieves the operation of . . . . . . . . . involved in holding drill.

Answer & Solution

2. A roadway in the ore body which follows strike.

Answer & Solution

3. The VOD of primer in m/sec in m/sec

Answer & Solution

4. In metal mining terminology development of mine means formation of . . . . . . . .

Answer & Solution

5. What do you understand by power of ventilation.

Answer & Solution

6. Lower inflammability of coal dust is . . . . . . . .

Answer & Solution

7. Maximum velocities of ventilating air at working faces in development/depillaring

Answer & Solution

8. What will be the RF of 1.8 cm on the maps represent 9 km.

Answer & Solution

9. In degree II gassy mines the rate of emission of gas m3/t of coal raised is . . . . . . . .

Answer & Solution

10. The w.g developed by the axial flow fan . . . . . . . . in cm.

Answer & Solution

Read More Section(Drilling and Blasting)

1.
By using of air leg relieves the operation of . . . . . . . . . involved in holding drill.

2.
A roadway in the ore body which follows strike.

3.
The VOD of primer in m/sec in m/sec

4.
In metal mining terminology development of mine means formation of . . . . . . . .

5.
What do you understand by power of ventilation.

6.
Lower inflammability of coal dust is . . . . . . . .

7.
Maximum velocities of ventilating air at working faces in development/depillaring

8.
What will be the RF of 1.8 cm on the maps represent 9 km.

9.
In degree II gassy mines the rate of emission of gas m³/t of coal raised is . . . . . . . .

10.
The w.g developed by the axial flow fan . . . . . . . . in cm.