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| 1 | The first stage of every op amp is a differential amplifier. |
 | A) | True |
| B) | False |
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| 2 | The common-mode rejection ratio is usually defined as the ratio of the common-mode voltage gain to the differential voltage gain. |
| A) | True |
| B) | False |
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| 3 | The higher the value of CMRR, the better the differential amplifier. |
| A) | True |
| B) | False |
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| 4 | An op amp is a low-gain, RC coupled amplifier. |
| A) | True |
| B) | False |
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| 5 | Bi-FET op amps generally have a narrow bandwidth, low slew rate, low power output, low input impedances, and very high input bias currents. |
| A) | True |
| B) | False |
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| 6 | Designed into the 741 op amp is a compensating capacitor used to provide oscillations within the op amp. |
| A) | True |
| B) | False |
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| 7 | The open-loop voltage gain of an op amp is its voltage gain when there is no negative feedback. |
| A) | True |
| B) | False |
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| 8 | The open-loop voltage gain of an op amp is the ratio of its differential input voltage to its output voltage. |
| A) | True |
| B) | False |
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| 9 | Input offset current is the sum of the op amp's two input bias currents. |
| A) | True |
| B) | False |
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| 10 | An op amp specification indicating the maximum rate at which the output voltage can change is referred to as the rate. |
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| 11 | The highest undistorted frequency out of an op amp without slew-rate distortion is called the bandwidth (fmax). |
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| 12 | Two identical signals applied to the inputs of an op amp, each with exactly the same phase relationship and voltage values is called a(n) signal. |
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| 13 | When the voltage at the op amp's inverting input is at the same potentialas ground, but it can sink no current, this point is considered ground. |
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| 14 | With an inverting op amp, the input and output signals are degrees out of phase. |
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| 15 | An amplifier whose output voltage equals the negative sum of the input voltages is called a(n) amplifier. |
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| 16 | A filter that uses components or devices such as transistors and op amps, that can amplify is called a(n) filter. |
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| 17 | The output of a comparator is always . |
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| 18 | Slew-rate distortion of a sine wave produces what type waveform? |
| A) | cosine wave |
| B) | square wave |
| C) | rectangular wave |
| D) | triangular wave |
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| 19 | What is the sampling of a portion of the output signal from an amplifier and feeding it back either to aid or oppose the input signal called? |
| A) | sample rate |
| B) | open loop |
| C) | feedback |
| D) | regulation |
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| 20 | Which of the following is not an advantage of negative feedback? |
| A) | stabilize voltage gain |
| B) | improve input and output impedances |
| C) | increase amplifier selectivity |
| D) | increase amplifier bandwidth |
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| 21 | What determines how much of the op amp's output signal is fed back to the input? |
| A) | virtual ground |
| B) | feedback fraction |
| C) | power source |
| D) | input signal |
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| 22 | Which of the following is not another name for op amp voltage follower? |
| A) | unity gain amplifier |
| B) | instrumentation amplifier |
| C) | buffer amplifier |
| D) | isolation amplifier |
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| 23 | Because the stages inside of an op amp are direct coupled, |
| A) | there is no lower cutoff frequency |
| B) | there is no upper cutoff frequency |
| C) | there is no need for a power source |
| D) | the lower cutoff frequency is 100 Hz |
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| 24 | With the instrumentation amplifier shown in Figure 33-19, A1 and A2 are in what op amp configuration? |
| A) | inverting |
| B) | noninverting |
| C) | voltage follower |
| D) | differential |
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| 25 | An op amp comparator that uses positive feedback is known as a |
| A) | positive comparator |
| B) | beta comparator |
| C) | Schmitt trigger |
| D) | feedback trigger |