Question 1

The time-based dependence of a system's output on present and past inputs (its "memory") is known as:

a) Memory

b) Gain

c) Hysteresis

d) Sampling period

Question 2

Identify the following features of the chart shown:

a) Upper control limit (UCL)
b ) Lower control limit (LCL)
c) Error
d) Setpoint

Question 3

The setpoint, provided by your instructor, will be:

a) in salinity percentage

b) always the same as the current salinity concentration

c) in arduino reading

d) always above the UCL

Question 4

PID is a common acronym in control theory. In PID, the letter "P" stands for:

a) Power

b) Phase

c) Process

d) Proportional

Question 5

In the fishtank system, one reasonable assumption might be:

a) The difference in density between the incoming and outgoing water is negligible.
b) The salinity of the water in the fishtank will never exceed 15%
c) Your instructor will grade you leniently
d) The UCL will always be at least 2.5V higher than the the LCL.