Drilling and Blasting MCQs Questions & Answers | Mining Engineering

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101.
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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102.
A roadway in the ore body which follows strike.

A. Sublevel string

B. Level

C. Dip

D. Rise

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103.
The VOD of primer in m/sec in m/sec

A. 5000

B. 6000

C. 7000

D. 8000

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104.
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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105.
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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106.
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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107.
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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108.
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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109.
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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110.
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

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

105. What do you understand by power of ventilation.

Answer & Solution

106. Lower inflammability of coal dust is . . . . . . . .

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

Read More Section(Drilling and Blasting)

101.
By using of air leg relieves the operation of . . . . . . . . . involved in holding drill.

102.
A roadway in the ore body which follows strike.

103.
The VOD of primer in m/sec in m/sec

104.
In metal mining terminology development of mine means formation of . . . . . . . .

105.
What do you understand by power of ventilation.

106.
Lower inflammability of coal dust is . . . . . . . .

107.
Maximum velocities of ventilating air at working faces in development/depillaring

108.
What will be the RF of 1.8 cm on the maps represent 9 km.

109.
In degree II gassy mines the rate of emission of gas m³/t of coal raised is . . . . . . . .

110.
The w.g developed by the axial flow fan . . . . . . . . in cm.