Can someone help me solving this question. Thank you!

1. Describe the necessary components and the system as a whole in order to control the pressure in one tank by feeding the liquid from another tank to the tank from below. 2. In a PID tuning study conducted with Ziegler-Nichols method, Kcu = 8 and Pcu was 200. Accordingly, what should be the controller coefficients for PI control? Table 1. Ziegler-Nichols controller arrangements Controller Type Kc KR Kd 0.5 Kcu Proportional (P) 0.45 Kcu P 1.2 Proportional-integral (PI) P, 0.6 Kcu cola 21.00 Proportional-integral-derivative (PID)