Question

Consider the following statements
A. Effective operating time per hectare is less than the theoretical time per hectare if less than the full rated width is utilized
B. Disc blades sharpened from the concave side penetrate more readily than disk blades sharpened from convex side
C. Scouring occurs as long as the frictional resistance at the soil tool interface is less than resistance at soil-soil interface
D. Small diameter discs penetrate more readily than large discs
Choose the correct answer from the options given below:

• A. A, B and C only
• B. B, C and D only
• C. A, C and D only
• D. A, B and D only

Hint:

To remember the scouring condition:
Scouring occurs when: \[ \text{Friction (Soil-Tool)} < \text{Shear Strength (Soil-Soil)} \] If this inequality is reversed, the soil shears within itself and sticks to the plow.

Answer 1

The Correct Option is B