Loci of a Cam is one of 9 topics in the Grade 11 Engineering Graphics and Design CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What does a cam convert rotary motion into, via its follower?
A controlled, predictable linear (reciprocating) motion
Pure rotational motion in a second gear
Electrical energy
No motion at all
Answer: A controlled, predictable linear (reciprocating) motion — A cam converts rotary motion into a controlled, predictable linear (reciprocating) motion in the follower that rides against its profile.
Easy
2. On what line does the follower reciprocate, according to the Grade 11 cam scope?
The vertical centre line of the cam shaft
A line offset far from the cam shaft's centre
A horizontal line unrelated to the cam shaft
There is no fixed line; the follower moves freely
Answer: The vertical centre line of the cam shaft — Grade 11 specifically requires that the follower reciprocates on the vertical centre line of the cam shaft, a simpler arrangement than an offset follower.
Medium
3. Name the two follower shapes that must be applied in Grade 11 cam work.
Answer: wedge-shaped and roller followers — Grade 11 cam work requires application of a wedge-shaped (knife-edge) follower and a roller follower.
