Drilling and Blasting MCQs Questions & Answers | Mining Engineering

A. Single high pressure fan

B. Low pressure fan in series

C. Low pressure fan in parallel

D. None

A. Fuel sensitizer, oxidizer, water, thicker, cross linking agents, gassy agent, stabilizer

B. Fuel sensitizer, oxidizer, water, thickner gassy agent

C. Thickner, water, gassy agent, stabilizer, oxydizer

D. Fuel, thickner, cross linking agents, gassy agent water, fuel sensitizer, oxydizer

A. Same

B. Side pressure

C. Opposite

D. None

A. Dew point

B. Draw point

C. Draw angle

D. Angle of draw

A. 5

B. 7.5

C. 12.5

D. 17

A. 2

B. 1.5

C. 2.5

D. 3

A. 30 cm

B. 50 cm

C. 15 cm

D. 1 m

A. Cushion blasting

B. Pre splitting

C. Line drilling

D. Muffled blast

A. Madhya Pradesh

B. Rajasthan

C. Karnataka

D. West Bengal

A. $$\frac{1}{R} = \frac{1}{{{R_1}}} + \frac{1}{{{R_2}}} + \frac{1}{{{R_3}}}\,.\,.\,.\,.\,.\,\frac{1}{{{R_n}}}$$

B. $$\frac{1}{{\sqrt R }} = \frac{1}{{\sqrt {{R_1}} }} - \frac{1}{{\sqrt {{R_2}} }} - \frac{1}{{\sqrt {{R_3}} }}\,.\,.\,.\,.\,.\, - \frac{1}{{\sqrt {{R_n}} }}$$

C. $$\frac{1}{{\sqrt R }} = \frac{1}{{\sqrt {{R_1}} }} + \frac{1}{{\sqrt {{R_2}} }} + \frac{1}{{\sqrt {{R_3}} }}\,.\,.\,.\,.\,.\,\frac{1}{{\sqrt {{R_n}} }}$$

D. $$\frac{1}{{\sqrt R }} = \sqrt {{R_1}} + \sqrt {{R_2}} + \sqrt {{R_3}} \,.\,.\,.\,.\,.\,\sqrt {{R_n}} $$