Question 1

A series-pass transistor is used in a voltage regulator.

Accepted Answer

A) True 
 B)False

Question 2

Figure $18 < 1$
-If $\mathrm { R } _ { f } = 5 \mathrm { k } \Omega$ and $\mathrm { R } _ { \mathrm { i } } = 10 \mathrm { k } \Omega$ in Figure 18-1(c), the voltage gain equals____________

Accepted Answer

A)   -5 
B)   -2 
C)   -0.5 
D)  0 
A)   -5 
B)   -2 
C)   -0.5 
D)  0

Question 3

$$\text { Figure } 19 < 3$$
-If  R=56  $\mathrm { k } \Omega$ and  C=0.05  $\mu \mathrm { F }$ in Figure 19-3, $\mathrm { fCO }$ equals_____

Accepted Answer

A)   568 Mz 
B)   56.8 Hz 
C)   3.0 Hz 
D)   300 Hz 
A)   568 Mz 
B)   56.8 Hz 
C)   3.0 Hz 
D)   300 Hz

Question 4

Figure $19 < 5$
-If the output voltage is 27.4 V at 822 Hz in Figure 19-5,W hat is the output voltage at 1.5 kHz?

Accepted Answer

A) 27.4V 
B) 13.7V 
C) 6.85V 
D) 19.4V 
A) 27.4V 
B) 13.7V 
C) 6.85V 
D) 19.4V

Question 5

Differential amplifiers provide high voltage gain and low common-mode rejection.

Accepted Answer

A) True 
 B)False

Question 6

\[\text { Figure } \mathbf { 1 7 } 1  increases in Figure  17-5 , the circuit______

Accepted Answer

A)  operates at a higher frequency 
B)  operates at dc 
C)  operates at a lower frequency 
D)  does not change at all 
A)  operates at a higher frequency 
B)  operates at dc 
C)  operates at a lower frequency 
D)  does not change at all

Question 7

Figure $18 < 1$
-VRF equals____ in Figure 18-1(c).

Accepted Answer

A)  VRI 
B)  VOUT 
C)  VIN 
D)   VCC 
A)  VRI 
B)  VOUT 
C)  VIN 
D)   VCC

Question 8

In a Wein-bridge op-amp oscillator, the output is a repetitive:

Accepted Answer

A) square Wave. 
B) sine Wave. 
C) triangular Wave. 
D) all of these. 
A) square Wave. 
B) sine Wave. 
C) triangular Wave. 
D) all of these.

Question 9

(a)
 
(b)
 
(c)

Figure $16 < 1$

-What is the current in Figure 16-1(b)if the diode is made of silicon and the polarity of the source voltage is reversed?

Accepted Answer

A) 0.6 mA 
B) 5 mA 
C) 0 A 
D) 10 mA 
A) 0.6 mA 
B) 5 mA 
C) 0 A 
D) 10 mA

Question 10

Most diodes are made from a semiconductor material called silicon.

Accepted Answer

A) True 
 B)False

Question 11

An op-amp integrator Will produce a linear increasing output voltage for a constant negative input voltage until cutoff is reached.

Accepted Answer

A) True 
 B)False

Question 12

$$\text { Figure } 19 < 4$$
-The prime characteristic of the filter in Figure 19-4 is ________.

Accepted Answer

A) it only works in a high-pass configuration 
B) the filter roll-off below the corner frequency is 40 dB/decade 
C) it has the largest response of any filter type 
D) nothing special 
A) it only works in a high-pass configuration 
B) the filter roll-off below the corner frequency is 40 dB/decade 
C) it has the largest response of any filter type 
D) nothing special

Question 13

The two types of BJTs are the PNP and the P-channel.

Accepted Answer

A) True 
 B)False

Question 14

If a 60 Hz sineW ave is input to a half- Wave rectifier, its output frequency is ________.

Accepted Answer

A) 60 Hz 
B) 0 Hz 
C) 30 Hz 
D) 120 Hz 
A) 60 Hz 
B) 0 Hz 
C) 30 Hz 
D) 120 Hz

Question 15

$\text { Figure } 17 < 1$
-If the collector-to-emitter voltage is about 0 V in Figure 17-1, the possible trouble is ________.

Accepted Answer

A) the amplifier is saturated 
B) the amplifier is cut off 
C) this is a normal condition 
D) the transistor is open 
A) the amplifier is saturated 
B) the amplifier is cut off 
C) this is a normal condition 
D) the transistor is open

Question 16

The ripple frequency of a half- Wave rectifier equals the supply frequency.

Accepted Answer

A) True 
 B)False

Question 17

A series and a shunt regulator are differentiated by the circuit placement of a:

Accepted Answer

A) series resistor versus parallel resistor. 
B) series transistor versus parallel transistor. 
C) series reference Voltage versus parallel reference Voltage. 
D) none of these. 
A) series resistor versus parallel resistor. 
B) series transistor versus parallel transistor. 
C) series reference Voltage versus parallel reference Voltage. 
D) none of these.

Question 18

Current flow through a diode is normally caused by ________.

Accepted Answer

A) depletion layer breakdown 
B) a reverseVoltage across the diode 
C) forwardVoltage across the diode 
D) thermally produced electron-hole pairs 
A) depletion layer breakdown 
B) a reverseVoltage across the diode 
C) forwardVoltage across the diode 
D) thermally produced electron-hole pairs

Question 19

A forward-biased silicon diode normally drops about 16 V.

Accepted Answer

A) True 
 B)False

Question 20

Figure $18 < 1$
-Identify the open-loop amplifier in Figure 18-1.

Accepted Answer

A) Figure 18-1(a) 
B) Figure 18-1(b) 
C) Figure 18-1(c) 
D) none of these 
A) Figure 18-1(a) 
B) Figure 18-1(b) 
C) Figure 18-1(c) 
D) none of these

A series-pass transistor is used in a voltage regulator.

$\text { Figure } 19 < 3 -If R=56 \mathrm { k } \Omega and C=0.05 \mu \mathrm { F } in Figure 19-3, \mathrm { fCO } equals_$ $\text { Figure } 19 < 3$ -If R=56 $\mathrm { k } \Omega$ and C=0.05 $\mu \mathrm { F }$ in Figure 19-3, $\mathrm { fCO }$ equals_

Figure $19 < 5$ -If the output voltage is 27.4 V at 822 Hz in Figure 19-5,W hat is the output voltage at 1.5 kHz?

Differential amplifiers provide high voltage gain and low common-mode rejection.

$\text { Figure } \mathbf { 1 7 } < 5 -If the value of C<sub>1</sub> increases in Figure 17-5 , the circuit$ $\text { Figure } \mathbf { 1 7 } < 5$ -If the value of C₁ increases in Figure 17-5 , the circuit

Figure $18 < 1$ -VRF equals____ in Figure 18-1(c).

In a Wein-bridge op-amp oscillator, the output is a repetitive:

(a) (b) (c) Figure $16 < 1$ -What is the current in Figure 16-1(b)if the diode is made of silicon and the polarity of the source voltage is reversed?

Most diodes are made from a semiconductor material called silicon.

An op-amp integrator Will produce a linear increasing output voltage for a constant negative input voltage until cutoff is reached.

$\text { Figure } 19 < 4 -The prime characteristic of the filter in Figure 19-4 is .$ $\text { Figure } 19 < 4$ -The prime characteristic of the filter in Figure 19-4 is .

The two types of BJTs are the PNP and the P-channel.

If a 60 Hz sineW ave is input to a half- Wave rectifier, its output frequency is ________.

$\text { Figure } 17 < 1 -If the collector-to-emitter voltage is about 0 V in Figure 17-1, the possible trouble is .$ $\text { Figure } 17 < 1$ -If the collector-to-emitter voltage is about 0 V in Figure 17-1, the possible trouble is .

The ripple frequency of a half- Wave rectifier equals the supply frequency.

A series and a shunt regulator are differentiated by the circuit placement of a:

Current flow through a diode is normally caused by ________.

A forward-biased silicon diode normally drops about 16 V.

Figure $18 < 1$ -Identify the open-loop amplifier in Figure 18-1.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rc Circuits

Inductors

Rl Circuits

Rlc Circuits and Resonance

Time Response of Reactive Circuits

Transformers

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

Exam 16: Regulators, Filters, and Op-Amps

A series-pass transistor is used in a voltage regulator.

Figure 18<118 < 118<1 -If Rf=5kΩ\mathrm { R } _ { f } = 5 \mathrm { k } \OmegaRf​=5kΩ and Ri=10kΩ\mathrm { R } _ { \mathrm { i } } = 10 \mathrm { k } \OmegaRi​=10kΩ in Figure 18-1(c), the voltage gain equals____________

Figure 19<3\text { Figure } 19 < 3 Figure 19<3 -If R=56 kΩ\mathrm { k } \OmegakΩ and C=0.05 μF\mu \mathrm { F }μF in Figure 19-3, fCO\mathrm { fCO }fCO equals_____

Figure 19<519 < 519<5 -If the output voltage is 27.4 V at 822 Hz in Figure 19-5,W hat is the output voltage at 1.5 kHz?

Differential amplifiers provide high voltage gain and low common-mode rejection.

Figure 17<5\text { Figure } \mathbf { 1 7 } < 5 Figure 17<5 -If the value of C1 increases in Figure 17-5 , the circuit______

Figure 18<118 < 118<1 -VRF equals____ in Figure 18-1(c).

In a Wein-bridge op-amp oscillator, the output is a repetitive:

(a) (b) (c) Figure 16<116 < 116<1 -What is the current in Figure 16-1(b)if the diode is made of silicon and the polarity of the source voltage is reversed?

Most diodes are made from a semiconductor material called silicon.

An op-amp integrator Will produce a linear increasing output voltage for a constant negative input voltage until cutoff is reached.

Figure 19<4\text { Figure } 19 < 4 Figure 19<4 -The prime characteristic of the filter in Figure 19-4 is ________.

The two types of BJTs are the PNP and the P-channel.

If a 60 Hz sineW ave is input to a half- Wave rectifier, its output frequency is ________.

Figure 17<1\text { Figure } 17 < 1 Figure 17<1 -If the collector-to-emitter voltage is about 0 V in Figure 17-1, the possible trouble is ________.

The ripple frequency of a half- Wave rectifier equals the supply frequency.

A series and a shunt regulator are differentiated by the circuit placement of a:

Current flow through a diode is normally caused by ________.

A forward-biased silicon diode normally drops about 16 V.

Figure 18<118 < 118<1 -Identify the open-loop amplifier in Figure 18-1.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rc Circuits

Inductors

Rl Circuits

Rlc Circuits and Resonance

Time Response of Reactive Circuits

Transformers

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

$\text { Figure } 19 < 3 -If R=56 \mathrm { k } \Omega and C=0.05 \mu \mathrm { F } in Figure 19-3, \mathrm { fCO } equals_$ $\text { Figure } 19 < 3$ -If R=56 $\mathrm { k } \Omega$ and C=0.05 $\mu \mathrm { F }$ in Figure 19-3, $\mathrm { fCO }$ equals_

Figure $19 < 5$ -If the output voltage is 27.4 V at 822 Hz in Figure 19-5,W hat is the output voltage at 1.5 kHz?

$\text { Figure } \mathbf { 1 7 } < 5 -If the value of C<sub>1</sub> increases in Figure 17-5 , the circuit$ $\text { Figure } \mathbf { 1 7 } < 5$ -If the value of C₁ increases in Figure 17-5 , the circuit

Figure $18 < 1$ -VRF equals____ in Figure 18-1(c).

(a) (b) (c) Figure $16 < 1$ -What is the current in Figure 16-1(b)if the diode is made of silicon and the polarity of the source voltage is reversed?

$\text { Figure } 19 < 4 -The prime characteristic of the filter in Figure 19-4 is .$ $\text { Figure } 19 < 4$ -The prime characteristic of the filter in Figure 19-4 is .

$\text { Figure } 17 < 1 -If the collector-to-emitter voltage is about 0 V in Figure 17-1, the possible trouble is .$ $\text { Figure } 17 < 1$ -If the collector-to-emitter voltage is about 0 V in Figure 17-1, the possible trouble is .

Figure $18 < 1$ -Identify the open-loop amplifier in Figure 18-1.