Drilling And Blasting - Study Mode

[#136] It is the instrument used to testing continuity of an electric circuit for blasting
Correct Answer

(B) blastometer

[#137] Crawler mounted rocker shovel is best for drifting a drift maximum grident of
Correct Answer

(A) 1 in 4

[#138] If the gas mask or self rescuer used in atmosphere containing more than 2% CO what happens.
Correct Answer

(D) Burns to mouth and throat

[#139] Natural ventilation pressure assists the fan ventilation pressure in case of . . . . . . . .
Correct Answer

(A) Ascentional ventilation

[#140] In case of opencast working as per CMR 2017 where any permanent building or structures not belonging to the owner lies within the danger zone, the aggregate maximum charge per round at one time shall not exceed
Correct Answer

(C) Amount fixed by CI