On all Allen Bradley PLCs the ________ is used to deliver power and signals to the I/O modules
A) Rack rails B) Backplane
C) Module interconnect D) Power rails
B
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In 1954 the average size of a dairy farm was 45 cows.
Answer the following statement true (T) or false (F)
How is the water level in the reservoir of an ice machine maintained at the correct level?
A) A float switch B) The water control measures incoming water pressure C) The reservoir has an overflow so water can safely spill over the edge D) The reservoir is filled and sealed at the factory.
Compared to infrared analyzers, ultraviolet absorption analyzers are generally _____
A) more affected by temperature variations B) more selective and sensitive C) less applicable on liquid streams D) less suited for sulfur dioxide monitoring
The AISC ____, a valuable reference source in preparing sectional drawings, is helpful in clarifying any ambiguities relative to proper callouts and dimensions.
A. Structural Steel Detailing B. Guide to Steel Construction C. Manual of Steel Construction D. The Steel Construction Reference