Drilling and Blasting MCQs Questions & Answers | Mining Engineering

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91.
The example for stabilizers.

A. Magnesium and calcium carbonate

B. Ammonium chloride

C. Sodium floride

D. All of these

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92.
For breaking hard rock and brittle rock cut pattern employed is . . . . . . . .

A. Wedge cut pattern

B. Fan cut pattern

C. Burn cut pattern

D. Drag cut pattern

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93.
Mining regulations are stringent in inspection of . . . . . . . .

A. Shaft

B. Incline

C. Decline

D. Adit

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94.
The formule for air power in SI unit is

A. RQ³ × 10^-3 KW

B. RQ² × 10³ KW

C. RQ × 10³ KW

D. RQ × 10² KW

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95.
The person in each inhalation inspires about . . . . . . . . litres of air of which he consumes about . . . . . . . . cc of oxygen so that with breaths per min.

A. 2, 100, 15

B. 1, 50, 20

C. 2, 50, 20

D. None

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96.
It is given in the statute that when two working places below ground have approached within A metre of each other, the Shotfirer shall fire in any of the two faces only. A is given by

A. 9 m

B. 12 m

C. 15 m

D. 18 m

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97.
The O₂ needed for breathing is produced by . . . . . . . . in chemical O₂ breathing apparatus. AVER/SAR-30.

A. Calcium superoxide

B. Nitro oxide

C. Potassium oxide

D. Potassium superoxide

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98.
Which type of fan produce more noise . . . . . . . .

A. Centrifugal

B. Axial flow

C. Panta

D. All of these

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99.
Power of ventilationis proportional to

A. V²

B. V

C. V³

D. $$\sqrt {\text{V}} $$

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100.
The sources of leakage of air in a mine are

A. Crushed coal pillars

B. Not providing air lock

C. Stoppings

D. Booster fans wrong sitting

E. All of above

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Drilling and Blasting MCQs Questions & Answers | Mining Engineering

91. The example for stabilizers.

Answer & Solution

92. For breaking hard rock and brittle rock cut pattern employed is . . . . . . . .

Answer & Solution

93. Mining regulations are stringent in inspection of . . . . . . . .

Answer & Solution

94. The formule for air power in SI unit is

Answer & Solution

95. The person in each inhalation inspires about . . . . . . . . litres of air of which he consumes about . . . . . . . . cc of oxygen so that with breaths per min.

Answer & Solution

96. It is given in the statute that when two working places below ground have approached within A metre of each other, the Shotfirer shall fire in any of the two faces only. A is given by

Answer & Solution

97. The O2 needed for breathing is produced by . . . . . . . . in chemical O2 breathing apparatus. AVER/SAR-30.

Answer & Solution

98. Which type of fan produce more noise . . . . . . . .

Answer & Solution

99. Power of ventilationis proportional to

Answer & Solution

100. The sources of leakage of air in a mine are

Answer & Solution

Read More Section(Drilling and Blasting)

91.
The example for stabilizers.

92.
For breaking hard rock and brittle rock cut pattern employed is . . . . . . . .

93.
Mining regulations are stringent in inspection of . . . . . . . .

94.
The formule for air power in SI unit is

95.
The person in each inhalation inspires about . . . . . . . . litres of air of which he consumes about . . . . . . . . cc of oxygen so that with breaths per min.

96.
It is given in the statute that when two working places below ground have approached within A metre of each other, the Shotfirer shall fire in any of the two faces only. A is given by

97.
The O₂ needed for breathing is produced by . . . . . . . . in chemical O₂ breathing apparatus. AVER/SAR-30.

98.
Which type of fan produce more noise . . . . . . . .

99.
Power of ventilationis proportional to

100.
The sources of leakage of air in a mine are