55. In the input RC circuit of a single-stage BJT or FET amplifier, as the frequency ________, the capacitive reactance ________ and ________ of the input voltage appears across the output terminals.
(a) increases, decreases, more (b) increases, decreases, less (c) increases, increases, more (d) decreases, decreases, less
Answer
Answer : (a)
Explanation
Explanation : No answer description available for this question. Let us discuss.
555555555543. The bandwidth ________ in a multistage amplifier compared to an identical single-stage amplifier. (a) increases (b) decreases (c) remains the same (d) None of the above
555555555519. In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage at the cutoff frequency in the low-frequency region? (a) About 0º (b) 45º (c) About 90º (d) None of the above
55555555552. What is the ratio of the capacitive reactance XCS to the input resistance RI of the input RC circuit of a single-stage BJT amplifier at the low-frequency cutoff? (a) 0.25 (b) 0.50 (c) 0.75 (d) 1.0
5555555555126. As the frequency increases, the input impedance of an op-amp ________ and the output impedance ________. (a) increases, increases (b) increases, decreases (c) decreases, decreases (d) decreases, increases
555555555542. The lower doping level ________ the conductivity and ________ the resistivity of the material. (a) increases, decreases (b) increases, increases (c) decreases, decreases (d) decreases, increases