Electronic controllers can be divided into two types
a) on or off
b) modulating and direct acting
c) indirect and direct acting
d) on or off and modulating
e) actuators and relays
Answer: D
Electronic controllers can be divided into two types
a) on or off
b) modulating and direct acting
c) indirect and direct acting
d) on or off and modulating
e) actuators and relays
Answer: D