Opencast Mining - Study Mode

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[#21] The drill that can drill holes 65 - 230 mm in hard rock is . . . . . . . .

(A) Ele drill

(B) Wagon drill

(C) DTH

(D) Churn drill

Correct Answer

(C) DTH

[#22] The average output per worker in soft rock or earth is about . . . . . . . . (insitu) per day.

(A) 1.2 m 3

(B) 2.2 m 3

(C) 2.8 m 3

(D) 3 m 3

Correct Answer

(C) 2.8 m 3

[#23] Fill factor of Hydraulic shovel.

(A) 65%

(B) 75%

(C) 80%

(D) 90%

Correct Answer

(C) 80%

[#24] Weight of jack hammer drill is . . . . . . . .

(A) 10 - 12 kgf

(B) 15 - 25 kgf

(C) 26 - 30 kgf

(D) 32 kgf

Correct Answer

(B) 15 - 25 kgf

[#25] Designated consumers with respect of energy conservation act 2001 also includes

(A) Steel

(B) Mining

(C) Fertilizers

(D) All of these

Correct Answer

(D) All of these