A drilling machine should be set to 250 rpm .the nearest speed available on the machine is 368 rpm . Calculate the percentage over speed
To calculate the percentage over speed, you can use the following formula:
Percentage Over Speed = ((Actual Speed - Desired Speed) / Desired Speed) * 100
In this case, the desired speed is 250 rpm and the actual speed is 368 rpm.
Percentage Over Speed = ((368 - 250) / 250) * 100
Percentage Over Speed = (118 / 250) * 100
Percentage Over Speed = 0.472 * 100
Percentage Over Speed = 47.2 %
So, the drilling machine is operating at 47.2% over the desired speed of 250 rpm.