What gauges are used for measuring duct pressure?
A) Vacuum gauges B) High-pressure gauges
C) Magnehelic gauges D) Compound gauges
C
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
What is the total circuit resistance of three heat strips wired in series if each strip has a resistance of 12 ??
A) 12 B) 36 C) 4 D) 3
A difference between a Schmitt trigger and a standard TTL gate is that
A) a standard gate is slower than a Schmitt trigger. B) a standard gate has a lower switching threshold for positive-going inputs. C) a Schmitt trigger input must be exactly 5.0 V or it will be ignored. D) a standard gate has lower voltage outputs.
__________ is the elapsed time between the instant a deviation of the controlled variable occurs, and the corrective action begins.
A. Time lag B. Dynamic response C. Dead time D. Pure lag