The internal feedback method used for speed regulation is obtained from sensing is __________.
A. the voltage from a tachometer
B. the armature current
C. the field current
Answer: B
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____ initiated the regulation of safety standards for the construction industry.
A. NIBS B. BIM C. IDP D. OSHA
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Bits that are dull are dangerous and should not be used
Indicate whether the statement is true or false.
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Mycorrhizae help plants avoid toxicities of zinc, copper, and other micronutrients by decreasing the uptake of these elements from soil into the plant shoot
Indicate whether the statement is true or false
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If an oil pump had to pump oil from an oil tank located 15 feet vertically below the burner, and 20 feet horizontally from the burner, with an oil filter in the system, how much vacuum would be created?
A. 36" Hg B. 9" Hg C. 18" Hg D. 20" Hg
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