55. A practical op-amp has very ________ input impedance, very ________ output impedance, very ________ open-loop voltage gain, and a ________ bandwidth.
555555555538. An operational amplifier is a ________ gain and ________ bandwidth differential amplifier. (a) very low, narrow (b) low, wide (c) medium, narrow (d) very high, wide
5555555555101. An operational amplifier has a ________ input impedance and a ________ output impedance. (a) high, low (b) high, high (c) low, low (d) low, high
555555555541. A Darlington pair amplifier has (a) high input impedance and high voltage gain. (b) low input impedance and low voltage gain. (c) a voltage gain of about 1 and a low input impedance. (d) a low voltage gain and a high input impedance.
Tags: input, impedance, voltage, gain, low, high, amplifier, electronics, engineering
Amplifiers » Exercise - 1 1. The important characteristic of emitter-follower is : (a) high input impedance and high output impedance (b) high input impedance and low output impedance (c) low input impedance and low output impedance (d) low input impedance and high output impedance