Question

which of the wheels shown in the diagram are rotating in the same direction?
a a, b, c, and d
b a, b, e, and f
c a, b, c, and f
d a, b, c, and e

Explanation:

• When two wheels are connected by a belt (like \(A\) and \(B\)), they rotate in the same direction.
• When two wheels are in mesh (like \(B\) and \(C\)), they rotate in the same direction.
• When two wheels are connected by a belt (like \(C\) and \(D\)), they rotate in the same direction.
• When two wheels are in mesh (like \(D\) and \(E\)), they rotate in the opposite direction.
• When two wheels are in mesh (like \(E\) and \(F\)), they rotate in the opposite direction.

Answer:

A. A, B, C, and D