Last step:
Step 4
Now, let us calculate C1, C2 and C3 to compute minimum savings per year. Let, C1=cost/component at speed 330 RPM.
![386_last step.png](https://www.expertsmind.com/../CMSImages/386_last step.png)
Tc1 ≈ Tac = 1.21min (from step 2)
T1 = 750 min (from step 2)
![1233_last step1.png](https://www.expertsmind.com/../CMSImages/1233_last step1.png)
C1 = 24.68 paise / component
Similarly, cost per component at spindle speed 535 is C2. Then,
![150_last step2.png](https://www.expertsmind.com/../CMSImages/150_last step2.png)
Tc2 = 0.748 min. (from step 2)
T2 = 11.2 min. (from step 2)
Therefore,
![2354_last step3.png](https://www.expertsmind.com/../CMSImages/2354_last step3.png)
C2=34.34 paise / component
Let the cost per component at speed Vopt be C3. Then,
![2333_last step4.png](https://www.expertsmind.com/../CMSImages/2333_last step4.png)
Tc3 ≈ Tac 3
= l / fN 3
= 0 .1524/3 .81 × 10 - 4 × 406
Tc3 = 0.985 min.
T3 = B/(Vopt ) 1 / n
= (2.53 ×1019 )/(97.18)8.71
T3 = 123.4 min
![1590_last step5.png](https://www.expertsmind.com/CMSImages/1590_last%20step5.png)
C3 = 22.72 paise / component
Minimum profit anticipated = C1 - C3
= 24.680 - 22.716 (while calculating profit from (C2 - C3), it will be more)
=1.96 paise / component
Total profit / year = (1.96 × 30000 )/100
= Rs. 589.22
Minimum profit anticipated = Rs. 589.22 per year