Question$-3(25\%)$:

$[$a$]$ State the name and function of each element of the following fluid fluid power control system. Then mention the difference in performance after replacing element $($V$)$ by $($A$,$ and B$).$

$[$A$]$

$[$B$]$

$[$b$]$ Design a fluid power control system providing linear movement and similar speed in both forward and reverse directions, pressure regulation, speed control, and possibility of pump unloading condition.

$[$c$]$ Explain the difference between the following control valves,