What two factors determine the output frequency of an alternator?
Ans: Number of stator poles and the speed of rotation
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A pressure gauge on an air tank reads 210 pounds per square inch (psi). The face of the gauge says ±3% at 180 psi.
(a) What is the range of air pressure in the tank when the gauge reads 210 psi? (b) What is the range of air pressure in the tank when the gauge reads 87 psi?
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?In an amorphous molecular structure of plastic, the appearance of the plastic will always be ____.
A. ?reflective B. ?opaque C. ?transparent D. ?translucent
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Rigid polymeric foam insulation materials are typically _____.
a. lightweight b. heavy c. dense d. fragile
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What force causes a head gasket to be drawn downward during engine operation"?
A) Gravity B) Intake stroke vacuum C) Exhaust gas pressure D) Head bolt torque
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