Question 1 (a) It is common to have bathtub in 5-star hotels. Normally bathtub has control system that keeps the water level constant. A constant flow from the water tap yields a constant water level, because the flow rate through the drain increases as the water level increases and decreases as the water level decreases. When equilibrium has been reached, the level can be controlled by controlling the input flow rate. Low input flow rate yields a lower level, while a higher input flow rate yields a higher level. i. Explain the main four (4) components involved in the system. Draw and explain the block diagram system for the control system behavior. ii.

Photoconductive cells are light-sensitive resistors in which resistance is inversely proportionated to light intensity when illuminated. These devices consist of a thin single-crystal or polycrystalline film of composite semiconductor materials. Cadmium …