A double stage reduction . . . . . . . . box helps to utilize the drill in coal or stone of various hardness.
A. Clutch
B. Brake
C. Gear
D. Accelator
Answer: Option C
This Question Belongs to Mining Engineering >> Mining Machinery
Related Questions on Mining Machinery
Coal cutting machine ropes are . . . . . . . . wire rope core.
A. Fibre
B. Steel strand core
C. Independent wire rope
D. All
The joining of ropes is termed as . . . . . . . .
A. Rope stitching
B. Rope splicing
C. Rope Stretching
D. Rope volcanizing
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