# Test 4 Study for Final

Quiz by Katrina Himes, updated more than 1 year ago
 Created by Katrina Himes over 2 years ago
20
1

### Description

Nuclear Program Quiz on Test 4 Study for Final, created by Katrina Himes on 06/12/2018.

## Resource summary

### Question 1

Question
The op amp can amplify
• AC signals only
• DC signals only
• Both AC and DC signals
• Neither AC nor DC signals

### Question 2

Question
The tail current of a diff amp is
• Half of either collector current
• Equal to either collector current
• Two times either collector current
• Equal to the difference in base currents

### Question 3

Question
The input offset current equals the
• Difference between the two base currents
• Average of the two base currents
• Collector current divided by current gain
• Difference between the two base-emitter voltages

### Question 4

Question
The tail current equals the
• Difference between the two emitter currents
• Sum of the two emitter currents
• Collector current divided by current gain
• Collector voltage divided by collector resistance

### Question 5

Question
The voltage gain of a diff amp with an unloaded differential output is equal to Rc divided by
• r'e
• r'e/2
• 2 r'e
• Re

### Question 6

Question
The input impedance of a diff amp equals r'e times
• 0
• Rc
• Re
• 2 ß

### Question 7

Question
A dc signal has a frequency of
• 0 Hz
• 60 Hz
• 0 to more than 1 MHz
• 1 MHz

### Question 8

Question
When the two input terminals of a diff amp are grounded,
• The base currents are equal
• The collector currents are equal
• An output error voltage usually exists
• The ac output voltage is zero

### Question 9

Question
A common-mode signal is applied to
• The noninverting input
• The inverting input
• Both inputs
• The top of the tail resistor

### Question 10

Question
The common-mode voltage gain is
• Smaller than the voltage gain
• Equal to the voltage gain
• Greater than the voltage gain
• None of the above

### Question 11

Question
The input stage of an op amp is usually a
• Diff amp
• Class B push-pull amplifier
• CE amplifier
• Swamped amplifier

### Question 12

Question
When the two bases are grounded in a diff amp the voltage across each emitter diode is
• Zero
• 0.7 V
• The same
• High

### Question 13

Question
The input offset current is usually
• Less than the input bias current
• Equal to zero
• Less than the input offset voltage
• Unimportant when a base resistor is used

### Question 14

Question
A compensating capacitor prevents
• Voltage gain
• Oscillations
• Input offset current
• Power bandwidth

### Question 15

Question
At the unity gain frequency, the open-loop voltage gain is
• 1
• Av (mid)
• Zero
• Very large

### Question 16

Question
If the cutoff frequency is 20 Hz and the midband open-loop voltage gain is 1,000,000, the unity gain frequency is
• 20 Hz
• 1 MHz
• 2 MHz
• 20 MHz

### Question 17

Question
If the two supply voltages are ± 12 V, the MPP value of an op amp is closest to
• 0
• +12 V
• -12 V
• 24 V

### Question 18

Question
The 741 V has a unity-gain frequency of
• 10 Hz
• 20 kHz
• 1 MHz
• 15 MHz

### Question 19

Question
The initial slope of a sine wave increases when
• Frequency increases
• Peak value increases
• Cc increases
• Slew rate decreases

### Question 20

Question
If the frequency of the input signal is greater than the power bandwidth,
• Slew-rate distortion occurs
• A normal output signal occurs
• Output offset voltage increases
• Distortion may occur

### Question 21

Question
An op amp has an open base resistor. The output voltage will be
• Zero
• Slightly different from zero
• Maximum positive or negative
• An amplified sine wave

### Question 22

Question
Above the cutoff frequency, the voltage gain of a 741 C decreases approximately
• 20 dB per octave
• 10 dB per octave

### Question 23

Question
The voltage gain of an op amp is unity at the
• Cutoff frequency
• Unity-gain frequency
• Generator frequency
• Power bandwidth

### Question 24

Question
When the slew-rate distortion of a sine wave occurs, the output
• Is larger
• Appears triangular
• Is normal
• Has no offset

### Question 25

Question
A 741 C has
• A voltage gain of 100,000
• An input impedance of 2 MΩ
• An output impedance of 75 Ω
• All of the above

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