Which of the following has the advantage of being resistant to shock and vibration and is commonly used for the I/O track of a programmable controller?
a. Solid-state relay
b. Mechanically held relay
c. Bimetallic overload relay
d. Thermal overload relay
a. Solid-state relay
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The details of supports and hangers for a cable tray system installation are usually worked out by the _____.
a. NEC® b. field crew c. project engineers d. electrical foreman
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Animal?rights activists believe that killing an animal is just as wrong as killing a
human being.
Indicate whether the statement is true or false.
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Experiment stations were established to create new knowledge through scientific investigation after the Hatch Act was passed in 1872
Indicate whether the statement is true or false
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Electricity is best thought of as a form of ____.
a. electronics b. polarity c. energy d. insulation
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