The rate of penetration of the coal drill . . . . . . . .
A. 1 m/min
B. 1.8 m/min
C. 1.5 m/min
D. 1.5 m/sec
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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