Why are two sets of contacts (one set normally open and one set normally closed) needed on an indoor fan relay?
a. To allow high-speed operation in heating.
b. To allow low-speed operation in cooling.
c. To allow high-speed operation after a time delay.
d. To ensure only one motor speed winding is energized at a time.
d. To ensure only one motor speed winding is energized at a time.
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The main purpose of a trial lift according to OSHA 1926.1417 is to _____.
a. go through the entire lift operation before risking passenger safety b. verify the platform meets design load capacity specifications c. make sure the platform is safe to lift personnel at a new work site d. verify the crane’s load chart is accurate
Several types of bacteria are classified according to their shape
Indicate whether the statement is true or false
Under what ecological conditions has continuous grazing worked best?
What will be an ideal response?
Match the tin snip to the color code that indicates the snip's intended purpose.
A. cuts sheet metal at sharp left angles B. cuts sheet metal at sharp right angles C. cuts sheet metal in a straight line