Opencast Mining - Study Mode

Show All Answers

[#191] The height of bench for 20 m 3 shovel is

(A) 8 m

(B) 10 m

(C) 14 m

(D) 20 m

Correct Answer

(D) 20 m

[#192] The one of the strength test method is of detonator.

(A) Drop test

(B) Lead plate method

(C) Snatch test

(D) Vibration test

Correct Answer

(B) Lead plate method

[#193] Depth of holes in coal in manual quarry.

(A) 0.5 - 1.2 m

(B) 1.2 - 2 m

(C) 3 - 5 m

(D) 8 - 10 m

Correct Answer

(B) 1.2 - 2 m

[#194] This system of mining in open cast is energy efficient.

(A) Continuous miner

(B) Shovel dumper

(C) Drag line

(D) None

Correct Answer

(A) Continuous miner

[#195] The formation of benches the angle of slope should not exceed.

(A) 90°

(B) 80°

(C) 60°

(D) 45°

Correct Answer

(D) 45°