Skip to main content

Back to the full dot-point answer

QLDEngineeringQuick questions

Unit 4: Machines and mechanisms

Quick questions on Cams and followers for QCE Engineering Unit 4

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is the displacement diagram?
Show answer
The displacement diagram is the key drawing for a cam. It plots the follower's displacement (vertical axis) against the cam's angle of rotation through one full revolution, 00 to 360∘360^\circ (horizontal axis). A rising line is the rise, a horizontal line is a dwell, and a falling line is the return. The diagram is effectively the design specification of the cam: from it the cam profile can be drawn.
What is follower position at 60∘60^\circ?
Show answer
The rise from 0∘0^\circ to 120∘120^\circ is uniform over 24 mm24\,\text{mm}, so the lift per degree is:
What is time for one revolution?
Show answer
At 300 rev/min300\,\text{rev/min}:

Have a question we have not covered?

This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.

All EngineeringQ&A pages