Figure 2C.Operational Amplifier.
IN ANSWERING QUESTIONS 2-27
THROUGH 2-29, REFER TO FIGURE 2C.
2-27. What is part A of the figure?
1. An input amplifier
2. A power amplifier
3. A voltage amplifier
4. A differential amplifier
2-28. What is part B of the figure?
1. A differential amplifier
2. A voltage amplifier
3. A power amplifier
4. A video amplifier
2-29. What is part C of the figure?
An output amplifier
A voltage amplifier
A differential amplifier
A high-impedance amplifier
2-30. If degenerative feedback is used in an
operational-amplifier circuit, which of
the following terms describes the circuit
1. Open loop
2. Closed loop
3. Full circle
2-31. Which of the following signals
determines the stability of the output
signal from an operational-amplifier
circuit in which degenerative feedback is
1. The input signal only
2. The feedback signal only
3. Both 1 and 2 above
4. The detected signal
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