14. Current flow between the main terminals of a triac is
a. In one direction only
b. In either direction
c. Constant at all times
d. Less than the gate current flow value

16. A triac can serve as the switching device for a programmable logic controller AC output module. (True/False)

17. Answer the following with reference to the triac variable AC control circuit shown in Figure 9-27.

a. The control logic controls the which the triac is switched on.

b. The output waveform is still AC, but the adjustable. on the AC waveform at current value is​