Drilling And Blasting - Study Mode

[#486] In a mine of height resistance, the series arrangement of fans gives considerable increase in quantity of air flowing posibly more than . . . . . . . . %.
Correct Answer

(B) 30

[#487] The incline in coal seam should have practically equal area up to a maximum limit . . . . . . . . meters on the strike by development may be considered for belt conveyas.
Correct Answer

(D) 1000

[#488] Slusher loader can operate at a gredient of
Correct Answer

(B) 1 in 3

[#489] The sampling pipe should be extended that . . . . . . . .m inside the fire stoping.
Correct Answer

(C) 3 m

[#490] An excavation adjoining the shaft at each of the different levels where men and materials are removed or delivered.
Correct Answer

(C) Platform