Parallel alignment error can occur in how many dimensions?

Parallel alignment error can occur in how many dimensions?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: (B)

Parallel alignment error occurs when two shafts run parallel but aren’t on the same line, so the misalignment is a lateral offset in the plane perpendicular to the shaft axes. That plane has two independent directions, meaning the offset can occur in two dimensions (left-right and up-down within that plane). So the correct count is two. The other options don’t fit because a parallel offset isn’t confined to a single direction and isn’t described by three or four independent offsets in the space around the shafts.

Parallel alignment error occurs when two shafts run parallel but aren’t on the same line, so the misalignment is a lateral offset in the plane perpendicular to the shaft axes. That plane has two independent directions, meaning the offset can occur in two dimensions (left-right and up-down within that plane). So the correct count is two. The other options don’t fit because a parallel offset isn’t confined to a single direction and isn’t described by three or four independent offsets in the space around the shafts.