Power is carried to the outside circuit of a revolving armature type alternator via brushes riding against the _____.
A. commutators
B. diodes
C. sliprings
D. wires
Answer: C
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Three hazards of hurricanes are _____________, ___________ and _________.
Fill in the blank(s) with the appropriate word(s).
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____________________ are needed to keep animals healthy
Fill in the blank(s) with correct word
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What is the trend in human populations in developing countries?
A) Slowly decreasing B) Rapidly increasing C) Generally stable D) Information is lacking on human population trends.
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A transformer with secondary voltage greater than its primary voltage is called a(n) ____.
A. step-up transformer B. step-down transformer C. isolation transformer D. autotransformer
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