Drilling And Blasting - Study Mode

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[#186] Which drivage is ideal for trackless mining.

(A) Shaft

(B) Incline

(C) Pit

(D) Haul roads

Correct Answer

(B) Incline

[#187] Over burden heaps should be atleast . . . . . . . .m away from the coal face of a quarry.

(A) 10

(B) 15

(C) 20

(D) 25

Correct Answer

(B) 15

[#188] The weight of soidum phosphate is . . . . . . . .

(A) 150 g

(B) 180 g

(C) 190 g

(D) 170 g

Correct Answer

(D) 170 g

[#189] Fire involves live electrical equipment comes under

(A) Class E fire

(B) Class C fire

(C) Class D fire

(D) Class B fire

Correct Answer

(A) Class E fire

[#190] Anemometers are used to measure air velocities between.

(A) 60 - 1000 m/min

(B) 0 - 10 m/min

(C) 10 - 50 m/min

(D) 50 - 60 m/min

Correct Answer

(A) 60 - 1000 m/min