In a standard disc plow, the tilt angle is generally defined as the angle that the:
Options:
(A) Plane of the cutting edge makes with the direction of travel
(B) Plane of the cutting edge makes with the vertical line
(C) Furrow wall makes with the landside
(D) Disc axis makes with the horizontal plane
Answer Key:
B
Step-by-Step Solution & Explanation
In disc plows:
1. **Disc angle**: The angle that the plane of the cutting edge makes with the direction of travel (usually $42^\circ$ to $45^\circ$).
2. **Tilt angle**: The angle that the plane of the cutting edge makes with the vertical line (usually $15^\circ$ to $25^\circ$). It facilitates penetration into the soil.