The resistance of a potentiometer marked 252 is
A) 250 ? B) 2.5 k? C) 25,000 ? D) 2.5 ?
B
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The head lap in a four-ply built-up roof is
A) 2 in. B) 5 in. C) 6 in. D) 4 in. E) none of the above.
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Peptide hormones are
A) composed of chains of amino acids. B) released by the reproductive organs. C) derived from arachidonic acid. D) lipids. E) chemically related to cholesterol.
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What are the main components of the three-phase AC induction motor?
What will be an ideal response?
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A series-tuned antenna circuit consists of a variable capacitor (40 pF to 360 pF) and a 240-?H antenna coil which has a dc resistance of 12 ?.
(a) Find the frequency range of radio signals to which the radio is tunable. (b) Determine the value of Q at each end of the frequency range.
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