____ conduct both directions of AC current flow.
A. Rectifiers
B. TRIACs
C. SCRs
D. MOSFETs
Answer: B
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If contamination has entered a water distribution system or water main when it is opened during installation or for repairs, how would a technician correct this problem?
What will be an ideal response?
How does the 74192/74193 counter control counting up or down?
A) It uses different outputs for counting up and down. B) The clock is inverted for counting down. C) It has an up/down control input. D) It uses separate clock inputs for counting up and down.
What is ionic crosslinking and what properties will it produce?
What will be an ideal response?
When fresh air is introduced through the air handling system, the process is called ____________________ ventilation.
Fill in the blank(s) with the appropriate word(s).