_____________ has the lowest noise-level?
Correct answer: D. JFET
- A. triode
- B. ordinary trnsistor
- C. tetrode
- D. JFET
Explanation
A JFET has low noise because its gate junction is reverse biased and its operation involves majority carriers, producing less noise than a conventional transistor. Triodes and tetrodes are vacuum tubes and are generally noisier in this comparison.
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