When troubleshooting with module indicators, in which of the following locations could a fault occur?
A) Input sensor B) Output actuator C) PLC processor D) All of the above
D
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What supplies the high voltage necessary for starting a fluorescent lamp?
What will be an ideal response?
State the primary difference between a detector and a meter
A) Detectors are calibrated in standard units and meters are calibrated in metric units. B) A meter simply detects the presence of a contaminant. A detector measures the amount of the contaminant. C) They are two words for the same instruments. D) A detector simply detects the presence of a contaminant. A meter measures the amount of the contaminant.
An AX valve works best when the evaporator load is constant.
Answer the following statement true (T) or false (F)
Bending stresses may develop in an arch if the supports at the ends of the arches shift because of:
A. structural stiffening. B. drag or base isolation. C. resonance or negative pressure. D. settling soil or thermal expansion.