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

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Katrina Himes
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Test 4 Study for Final

Question 1 of 25

1

The op amp can amplify

Select one of the following:

  • AC signals only

  • DC signals only

  • Both AC and DC signals

  • Neither AC nor DC signals

Explanation

Question 2 of 25

1

The tail current of a diff amp is

Select one of the following:

  • Half of either collector current

  • Equal to either collector current

  • Two times either collector current

  • Equal to the difference in base currents

Explanation

Question 3 of 25

1

The input offset current equals the

Select one of the following:

  • 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

Explanation

Question 4 of 25

1

The tail current equals the

Select one of the following:

  • Difference between the two emitter currents

  • Sum of the two emitter currents

  • Collector current divided by current gain

  • Collector voltage divided by collector resistance

Explanation

Question 5 of 25

1

The voltage gain of a diff amp with an unloaded differential output is equal to Rc divided by

Select one of the following:

  • r'e

  • r'e/2

  • 2 r'e

  • Re

Explanation

Question 6 of 25

1

The input impedance of a diff amp equals r'e times

Select one of the following:

  • 0

  • Rc

  • Re

  • 2 ß

Explanation

Question 7 of 25

1

A dc signal has a frequency of

Select one of the following:

  • 0 Hz

  • 60 Hz

  • 0 to more than 1 MHz

  • 1 MHz

Explanation

Question 8 of 25

1

When the two input terminals of a diff amp are grounded,

Select one of the following:

  • The base currents are equal

  • The collector currents are equal

  • An output error voltage usually exists

  • The ac output voltage is zero

Explanation

Question 9 of 25

1

A common-mode signal is applied to

Select one of the following:

  • The noninverting input

  • The inverting input

  • Both inputs

  • The top of the tail resistor

Explanation

Question 10 of 25

1

The common-mode voltage gain is

Select one of the following:

  • Smaller than the voltage gain

  • Equal to the voltage gain

  • Greater than the voltage gain

  • None of the above

Explanation

Question 11 of 25

1

The input stage of an op amp is usually a

Select one of the following:

  • Diff amp

  • Class B push-pull amplifier

  • CE amplifier

  • Swamped amplifier

Explanation

Question 12 of 25

1

When the two bases are grounded in a diff amp the voltage across each emitter diode is

Select one of the following:

  • Zero

  • 0.7 V

  • The same

  • High

Explanation

Question 13 of 25

1

The input offset current is usually

Select one of the following:

  • Less than the input bias current

  • Equal to zero

  • Less than the input offset voltage

  • Unimportant when a base resistor is used

Explanation

Question 14 of 25

1

A compensating capacitor prevents

Select one of the following:

  • Voltage gain

  • Oscillations

  • Input offset current

  • Power bandwidth

Explanation

Question 15 of 25

1

At the unity gain frequency, the open-loop voltage gain is

Select one of the following:

  • 1

  • Av (mid)

  • Zero

  • Very large

Explanation

Question 16 of 25

1

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

Select one of the following:

  • 20 Hz

  • 1 MHz

  • 2 MHz

  • 20 MHz

Explanation

Question 17 of 25

1

If the two supply voltages are ± 12 V, the MPP value of an op amp is closest to

Select one of the following:

  • 0

  • +12 V

  • -12 V

  • 24 V

Explanation

Question 18 of 25

1

The 741 V has a unity-gain frequency of

Select one of the following:

  • 10 Hz

  • 20 kHz

  • 1 MHz

  • 15 MHz

Explanation

Question 19 of 25

1

The initial slope of a sine wave increases when

Select one of the following:

  • Frequency increases

  • Peak value increases

  • Cc increases

  • Slew rate decreases

Explanation

Question 20 of 25

1

If the frequency of the input signal is greater than the power bandwidth,

Select one of the following:

  • Slew-rate distortion occurs

  • A normal output signal occurs

  • Output offset voltage increases

  • Distortion may occur

Explanation

Question 21 of 25

1

An op amp has an open base resistor. The output voltage will be

Select one of the following:

  • Zero

  • Slightly different from zero

  • Maximum positive or negative

  • An amplified sine wave

Explanation

Question 22 of 25

1

Above the cutoff frequency, the voltage gain of a 741 C decreases approximately

Select one of the following:

  • 10 dB per decade

  • 20 dB per octave

  • 10 dB per octave

  • 20 dB per decade

Explanation

Question 23 of 25

1

The voltage gain of an op amp is unity at the

Select one of the following:

  • Cutoff frequency

  • Unity-gain frequency

  • Generator frequency

  • Power bandwidth

Explanation

Question 24 of 25

1

When the slew-rate distortion of a sine wave occurs, the output

Select one of the following:

  • Is larger

  • Appears triangular

  • Is normal

  • Has no offset

Explanation

Question 25 of 25

1

A 741 C has

Select one of the following:

  • A voltage gain of 100,000

  • An input impedance of 2 MΩ

  • An output impedance of 75 Ω

  • All of the above

Explanation

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