hipfinnsy
Sensual Pepper
There's this one little section that I have no clue what is being talked about:
[*]To find an rpm necessary
- take number of rods on the wheel, divide that from the needed contacts per minute. (ex. twice per second = 120 contacts per minute. 10 projection rods on wheel. 120/10=12. must rotate at 12 rpm.
[*]By increasing the length of the lever arm, the effort is increased enabling a valve to blow off at a higher pressure. Move the weight further away to do this.
- Think of the picture from the practice exams.. Lever left causes less effort and lets valve blow up at lower pressure. Lots of L's!