4. To fix the frequency boundaries of relatively high gain, 0.7 Amid was chosen to be at the cutoff levels. The corresponding frequencies, f1 and f2, are generally called ________. A) corner frequencies B) cutoff frequencies C) half-power frequencies D) All of the above
A: wrong.
B: wrong.
C: wrong.
D: This is the right answer.
A: wrong.
B: wrong.
C: wrong.
D: This is the right answer.
举一反三
- A filter that attenuates high frequencies while passing low frequencies is called a（ ）. A: bandpass B: bandstop C: lowpass D: highpass
- 3. The common mode rejection ratio (CMRR) is the ratio of ________. A) the difference mode gain to the common mode gain B) the common mode gain to the difference mode gain C) noninverting gain to inverting gain D) inverting gain to noninverting gain A: This is the right answer. B: wrong. C: wrong. D: wrong.
- The sum of the relative frequencies for all classes will always equal:
- Which of the following is not coherent? A: “I’m wrong,” she said to my sister. B: She told my sister that she was wrong. C: “You’re wrong,” she said to my sister. D: My sister was told that she was wrong.
- The sum of frequencies for all classes will always equal 1. (<br/>)