Drilling And Blasting - Study Mode

[#491] The principle behind the air screw fan . . . . . . . .
Correct Answer

(B) Aerodynamic

[#492] Shock energy of detonation increases rapidly with . . . . . . . .
Correct Answer

(C) Velocity

[#493] In case of opencast working, after shots are fired which of the following things a Shot-firer/Blaster shall do?
Correct Answer

(A) shall give all clear signal except in case of misfire

[#494] Equivalent orifice theory is advanced by
Correct Answer

(C) Murgue

[#495] The incline in coal seam should have practically equal area upto a maximum of . . . . . . . . meters on the strike by development by rope haulage.
Correct Answer

(C) 600