Question 1

-The curve in Figure 19-5 is from a ________ and its lower cutoff frequency equals ________.

Accepted Answer

A) two-pole high-pass filter, 1500 Hz 
B) band-reject filter, 450 kHz 
C) band-pass filter, 822 Hz 
D) band-pass filter, 450 Hz 
A) two-pole high-pass filter, 1500 Hz 
B) band-reject filter, 450 kHz 
C) band-pass filter, 822 Hz 
D) band-pass filter, 450 Hz

Question 2

In a scaling adder, the ________.

Accepted Answer

A) input resistors have values depending on the assigned weight of each input 
B) input resistors are all different values 
C) input resistors are all the same value 
D) ratio RF/RIN must be the same for each input 
A) input resistors have values depending on the assigned weight of each input 
B) input resistors are all different values 
C) input resistors are all the same value 
D) ratio RF/RIN must be the same for each input

Question 3

Butterworth filters are characterized by a linear response in the pass band.

Accepted Answer

A) True 
 B)False

Question 4

-If   in Figure 19-1, VOUT equals ________.

Accepted Answer

A) -13 V 
B) 13 V 
C) -1 V 
D) 1 V 
A) -13 V 
B) 13 V 
C) -1 V 
D) 1 V

Question 5

Using op-amps in a triangular wave oscillator results in a:

Accepted Answer

A) triangular wave output. 
B) function generator output. 
C) square wave output. 
D) all of these. 
A) triangular wave output. 
B) function generator output. 
C) square wave output. 
D) all of these.

Question 6

-If the two input voltages are 9. , what is the output voltage?

Accepted Answer

A) -8.5 V 
B) -9.9 V 
C) 8.5 V 
D) 9.9 V 
A) -8.5 V 
B) -9.9 V 
C) 8.5 V 
D) 9.9 V

Question 7

-If VIN equals 8 V in Figure 19-1, VOUT equals ________.

Accepted Answer

A) -1 V 
B) 1 V 
C) 13 V 
D) -13 V 
A) -1 V 
B) 1 V 
C) 13 V 
D) -13 V

Question 8

-If   in Figure 19-3, fCO equals ________.

Accepted Answer

A) 145 Hz 
B) 4.8 Hz 
C) 48 Hz 
D) 1.45 kHz 
A) 145 Hz 
B) 4.8 Hz 
C) 48 Hz 
D) 1.45 kHz

Question 9

-In Figure 19-4, if the frequency is decreased from the pass band to 1 decade below fCO, the output voltage drops to ________.

Accepted Answer

A) -40 dB 
B) -6 dB 
C) -3 dB 
D) -20 dB 
A) -40 dB 
B) -6 dB 
C) -3 dB 
D) -20 dB

Question 10

-If the inputs are -7. , what is the output voltage?

Accepted Answer

A) 4.9 V 
B) -4.9 V 
C) 19.1 V 
D) -19.1 V 
A) 4.9 V 
B) -4.9 V 
C) 19.1 V 
D) -19.1 V

Question 11

-If   in Figure 19-3, fCO equals ________.

Accepted Answer

A) 5.19 Hz 
B) 16.9 Hz 
C) 169 Hz 
D) 51.9 Hz 
A) 5.19 Hz 
B) 16.9 Hz 
C) 169 Hz 
D) 51.9 Hz

Question 12

-If VOUT equals 12 V at 822 Hz in Figure 19-5, the output voltage equals ________ at 450 Hz.

Accepted Answer

A) 4.24 V 
B) 1.06 V 
C) 8.49 V 
D) 2.12 V 
A) 4.24 V 
B) 1.06 V 
C) 8.49 V 
D) 2.12 V

Question 13

-If VIN equals 4 V in Figure 19-1, VOUT equals ________.

Accepted Answer

A) -13 V 
B) 13 V 
C) -1 V 
D) 1 V 
A) -13 V 
B) 13 V 
C) -1 V 
D) 1 V

Question 14

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 15

-If   equals 22 V in Figure 19-3,   at the fCO equals ________.

Accepted Answer

A) 31.1 V 
B) 15.64 V 
C) 0 
D) 7.79 V 
A) 31.1 V 
B) 15.64 V 
C) 0 
D) 7.79 V

Question 16

An op-amp summing amplifier has no limitations on the number of inputs it can handle.

Accepted Answer

A) True 
 B)False

Question 17

-What change causes the circuit in Figure 19-2(b) to output the average of the three input voltages?

Accepted Answer

A)    . 
B)    
C) Change to a different type of op-amp. 
D)    
A)    . 
B)    
C) Change to a different type of op-amp. 
D)

Question 18

-Short-circuit or overload protection is an integral part of ________.

Accepted Answer

A) most JFETs 
B) most three-terminal regulators 
C) most op-amps 
D) most TRIACs 
A) most JFETs 
B) most three-terminal regulators 
C) most op-amps 
D) most TRIACs

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

A second-order filter rolls-off at 40 dB/decade.

Accepted Answer

A) True 
 B)False

Exam 19: Circuit Theorems in Ac Analysis

-The curve in Figure 19-5 is from a ________ and its lower cutoff frequency equals ________.

In a scaling adder, the ________.

Butterworth filters are characterized by a linear response in the pass band.

-If in Figure 19-1, VOUT equals ________.

Using op-amps in a triangular wave oscillator results in a:

-If the two input voltages are 9. , what is the output voltage?

-If VIN equals 8 V in Figure 19-1, VOUT equals ________.

-If in Figure 19-3, fCO equals ________.

-In Figure 19-4, if the frequency is decreased from the pass band to 1 decade below fCO, the output voltage drops to ________.

-If the inputs are -7. , what is the output voltage?

-If in Figure 19-3, fCO equals ________.

-If VOUT equals 12 V at 822 Hz in Figure 19-5, the output voltage equals ________ at 450 Hz.

-If VIN equals 4 V in Figure 19-1, VOUT equals ________.

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

-If equals 22 V in Figure 19-3, at the fCO equals ________.

An op-amp summing amplifier has no limitations on the number of inputs it can handle.

-What change causes the circuit in Figure 19-2(b) to output the average of the three input voltages?

-Short-circuit or overload protection is an integral part of ________.

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

A second-order filter rolls-off at 40 dB/decade.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Branch, Loop, and Node Analyses

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

RC Circuits

RL Circuits

RlC Circuits and Resonance

Passive Filters

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters

-The curve in Figure 19-5 is from a and its lower cutoff frequency equals .