Which type of trapezoidal thread is used in places there motion is to be transmitted between shafts at right angle?

Multiple Choice Question (MCQ)

Question: Which type of trapezoidal thread is used in places there motion is to be transmitted between shafts at right angle?

A. Acme thread

B. Buttress thread

C. Saw-tooth thread

D. Worm thread

Correct Answer: Worm thread

Explanation

Sine Function:
sin(θ) = Opposite / Hypotenuse =4/5, means that in the right-angled triangle, the opposite side is 4 and the hypotenuse is 5. the adjacent side must therefore be 3. (Pythagorean triple 3,4,5)

Tangent Function:
tan(θ) = Opposite / Adjacent = 4/3