Drilling And Blasting - Study Mode

[#171] Permitted limit of speed of blade tips near the residential areas in axial flow fan . . . . . . . . in m/min.
Correct Answer

(B) 4200

[#172] Metallic powders in explosive composition act as . . . . . . . .
Correct Answer

(C) Sensitizers

[#173] Which of the following agent is used to give sheath in a permitted sheathed explosive?
Correct Answer

(C) NaHCO 3

[#174] Cordtex fuse fired by . . . . . . . .
Correct Answer

(B) Electric detonator

[#175] Hopacalite used as
Correct Answer

(C) Catalist