[Q]: Sentence: In a number of countries, societal variables affect classification as much as skin color, and the social criteria for "blackness" vary. Question: What factors can affect the classification of "blackness"?
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[A]: yes

[Q]: Sentence: A leaky capacitor can cause the grid circuit voltage to be raised from its normal bias setting, causing excessive current or signal distortion in the downstream tube. Question: If the grid circuit voltage is increased beyond its regular bias setting, what can happen to the conductive plates in power amplifiers?
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[A]: no

[Q]: Sentence: The electric guitars are normally faint and high-pitched. Question: Along with being faint, what characteristic is usually present in electric guitars used in adult contemporary?
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[A]:
yes