If a 27 m H inductor has a reactance of 5.5 k?, the frequency equals ________
A) 32.4 kHz B) 324 Hz C) 932 Hz D) 3.24 kHz
A
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How often does the AC power supply change direction in the United States?
A. 10 times per second B. 30 times per second C. 60 times per second D. 90 times per second
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The stationary magnet of a DC motor is represented by the _____.
a. armature b. field poles c. commutator d. rotor
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Which of the following describes why fuel cell technology is not in mass production?
A) Insufficient power density B) High cost C) Lack of durability D) All of these are reasons vehicles with fuel cells are not currently mass-produced.
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What type of seal is shaped like a bracelet without a clasp and fits into a groove in a component to provide a seal?
What will be an ideal response?
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