Chapter 1
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) A sine wave is described as v(t) = 30 V sin (350t). This means that the angular frequency of this 1)
waveform is
A) 350 Hz B) 5.75 rad/s C) 350 rad/s D) 173 rad/s
2) Name an example of a non-linear amplifier output. 2)
A) An amplified audio signal B) A sinusoidal waveform
C) A square wave D) An output signal from a electric guitar
3) A vector must meet the following conditions: 3)
A) It must represent an electrical quantity
B) It must have a quantity of voltage and a period of time
C) It must have volume and direction
D) It must have magnitude and direction
4) If the second stage of two cascaded amplifiers has its input resistance decrease, what will happen to 4)
the magnitude of the output signal?
A) load voltage will decrease but load current will increase
B) it will decrease
C) there will no change
D) it will increase
5) Which term does not define ac resistance? 5)
A) Reactance B) Dynamic resistance
C) Small signal resistance D) Bulk resistance
6) Sampling is the process of? 6)
A) Testing gain by measuring output on a oscilloscope
B) Rejecting high or low signals
C) Breaking down an analog wave into time slices
D) Troubleshooting by inputting a signal
7) What converts some physical quantity into an electrical quantity to be measured? 7)
A) Ammeter B) Voltmeter C) Sensor D) Transducer
8) The no-load output voltage of a complex linear circuit is measured as 600 mV. When a 220 load 8)
is connected, the load voltage is found to be 489 mV. What is the Thevenin resistance of the circuit?
A) 102 B) 179 C) 75 D) 50
9) What is log 1000? 9)
A) 2 B) 4 C) 1 D) 3
10) The amount of power dissipated by a resistor connected to an ac source is defined by? 10)
A) P = Vp x Ip B) P = .707Vp x .707Ip
C) P = Vp/Ip D) None of the above
1
,11) If a waveform repeats every 1ms, what is the frequency? 11)
A) 100KHz B) 100 Hz C) 10KHz D) 1KHz
12) A linear component is one in which an increase in current is proportional to the applied voltage as 12)
given by Ohm's law. Which of the following is an example of a linear component?
A) Transistor B) Capacitor C) Diode D) Resistor
13) If the power gain of an amplifier is said to be 3:1, what is the dB gain? 13)
A) 3 log 10dB B) 10 log 3 dB C) 30 dB D) 4.8 dB
14) A digitized signal is... 14)
A) Difficult to store for reproduction
B) Close to, but not exactly the same as the analog original
C) Considered to contain more noise than an analog signal
D) An exact replica of the analog original
15) The period of a waveform is? 15)
A) The measure of the height of a waveform
B) The time a periodic wave takes to complete one cycle
C) Another name for cps
D) The reciprocal of time
16) Analog and digital signals are also referred to as? 16)
A) Steady and constant B) Small signal and large signal
C) Continuous and discrete D) Constant and varied
17) What is the symbol used to represent angular frequency? 17)
A) B) C) D)
18) The average value of a sine wave is computed by? 18)
A) Converting the negative portion of the waveform to positive and averaging
B) Multiplying the peak to peak value by 6.28 then averaging
C) Adding the positive going peaks to the negative peaks and dividing by two
D) Dividing the peak value by .707
19) In order to simplify a circuit, one can replace a complicated two-terminal linear circuit with an 19)
ideal voltage source and a series resistance. What is this process called?
A) Ohm's law B) Thevenin's theorem
C) Norton's theorem D) Equivalent circuit analysis
20) Which component is considered to be analog? 20)
A) A two-pole switch B) None of the above
C) An infrared pulser D) A potentiometer
21) Load lines terminate on the X and Y-axis of a graph. What do the terminal points represent? 21)
A) Maximum and minimum current in a circuit
B) Saturation and cutoff
C) A short and open load condition of a circuit
D) All of the above
2
,22) Analog circuits are typically not used for which of the following applications? 22)
A) Signal mixing B) Decoding
C) Transforming voltage to current D) Waveshaping
23) The unit of measure for frequency is? 23)
A) Hertz B) Cycles per second (CPS)
C) Both A & B D) Neither A nor B
24) Which of the following statements are true regarding amplifiers? 24)
A) Amplifiers cannot be cascaded
B) An amplifier can amplify voltage beyond it's supply voltage
C) An ideal amplifier produces no noise or distortion
D) Amplifiers do not amplify power, only current or voltage
25) Which statements are true about sinusoidal waveforms? 25)
A) Sinusoidal waveforms do not repeat
B) They are a composite of fundamental and harmonic frequencies
C) A sinusoidal waveform has no fundamental frequency
D) A sinusoidal waveform does not contain harmonics
26) AC resistance is the ratio of the change in voltage divided by a change in current and can be seen 26)
on a characteristic curve. Which statement about characteristic curves is true?
A) analog components cannot be represented by a characteristic curve
B) ac characteristic curves are always linear
C) The ac resistance depends on what point on the IV characteristic curve the measurement is
made
D) dc characteristic curves always have the same slope
27) Electron Theory suggests that: 27)
A) Electrons actually move from a negative toward a positive voltage
B) Electrons and protons are responsible for current flow
C) Electrons move from a positive toward a negative voltage
D) Current flow is not a component of electron movement
28) What is the third odd harmonic of a 1KHz square wave? 28)
A) 3KHz B) 7KHz C) 5KHz D) 9KHz
29) How do spectrum analyzers measure signals? 29)
A) In the frequency domain
B) By converting a digital signal to an analog format
C) In the time domain
D) By digitizing an analog signal
30) In order to simplify a circuit, one can replace the source voltage with a current source in parallel 30)
with the simple resistance of a circuit. What is this method of circuit analysis?
A) Circuit analysis B) Ohm's law
C) Thevenin's theorem D) Norton's theorem
3
, Answer Key
Testname: CHAPTER 1
1) C
2) C
3) D
4) B
5) A
6) C
7) D
8) D
9) D
10) B
11) D
12) D
13) D
14) B
15) B
16) C
17) D
18) A
19) B
20) D
21) D
22) B
23) C
24) C
25) D
26) C
27) A
28) A
29) A
30) D
4
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) A sine wave is described as v(t) = 30 V sin (350t). This means that the angular frequency of this 1)
waveform is
A) 350 Hz B) 5.75 rad/s C) 350 rad/s D) 173 rad/s
2) Name an example of a non-linear amplifier output. 2)
A) An amplified audio signal B) A sinusoidal waveform
C) A square wave D) An output signal from a electric guitar
3) A vector must meet the following conditions: 3)
A) It must represent an electrical quantity
B) It must have a quantity of voltage and a period of time
C) It must have volume and direction
D) It must have magnitude and direction
4) If the second stage of two cascaded amplifiers has its input resistance decrease, what will happen to 4)
the magnitude of the output signal?
A) load voltage will decrease but load current will increase
B) it will decrease
C) there will no change
D) it will increase
5) Which term does not define ac resistance? 5)
A) Reactance B) Dynamic resistance
C) Small signal resistance D) Bulk resistance
6) Sampling is the process of? 6)
A) Testing gain by measuring output on a oscilloscope
B) Rejecting high or low signals
C) Breaking down an analog wave into time slices
D) Troubleshooting by inputting a signal
7) What converts some physical quantity into an electrical quantity to be measured? 7)
A) Ammeter B) Voltmeter C) Sensor D) Transducer
8) The no-load output voltage of a complex linear circuit is measured as 600 mV. When a 220 load 8)
is connected, the load voltage is found to be 489 mV. What is the Thevenin resistance of the circuit?
A) 102 B) 179 C) 75 D) 50
9) What is log 1000? 9)
A) 2 B) 4 C) 1 D) 3
10) The amount of power dissipated by a resistor connected to an ac source is defined by? 10)
A) P = Vp x Ip B) P = .707Vp x .707Ip
C) P = Vp/Ip D) None of the above
1
,11) If a waveform repeats every 1ms, what is the frequency? 11)
A) 100KHz B) 100 Hz C) 10KHz D) 1KHz
12) A linear component is one in which an increase in current is proportional to the applied voltage as 12)
given by Ohm's law. Which of the following is an example of a linear component?
A) Transistor B) Capacitor C) Diode D) Resistor
13) If the power gain of an amplifier is said to be 3:1, what is the dB gain? 13)
A) 3 log 10dB B) 10 log 3 dB C) 30 dB D) 4.8 dB
14) A digitized signal is... 14)
A) Difficult to store for reproduction
B) Close to, but not exactly the same as the analog original
C) Considered to contain more noise than an analog signal
D) An exact replica of the analog original
15) The period of a waveform is? 15)
A) The measure of the height of a waveform
B) The time a periodic wave takes to complete one cycle
C) Another name for cps
D) The reciprocal of time
16) Analog and digital signals are also referred to as? 16)
A) Steady and constant B) Small signal and large signal
C) Continuous and discrete D) Constant and varied
17) What is the symbol used to represent angular frequency? 17)
A) B) C) D)
18) The average value of a sine wave is computed by? 18)
A) Converting the negative portion of the waveform to positive and averaging
B) Multiplying the peak to peak value by 6.28 then averaging
C) Adding the positive going peaks to the negative peaks and dividing by two
D) Dividing the peak value by .707
19) In order to simplify a circuit, one can replace a complicated two-terminal linear circuit with an 19)
ideal voltage source and a series resistance. What is this process called?
A) Ohm's law B) Thevenin's theorem
C) Norton's theorem D) Equivalent circuit analysis
20) Which component is considered to be analog? 20)
A) A two-pole switch B) None of the above
C) An infrared pulser D) A potentiometer
21) Load lines terminate on the X and Y-axis of a graph. What do the terminal points represent? 21)
A) Maximum and minimum current in a circuit
B) Saturation and cutoff
C) A short and open load condition of a circuit
D) All of the above
2
,22) Analog circuits are typically not used for which of the following applications? 22)
A) Signal mixing B) Decoding
C) Transforming voltage to current D) Waveshaping
23) The unit of measure for frequency is? 23)
A) Hertz B) Cycles per second (CPS)
C) Both A & B D) Neither A nor B
24) Which of the following statements are true regarding amplifiers? 24)
A) Amplifiers cannot be cascaded
B) An amplifier can amplify voltage beyond it's supply voltage
C) An ideal amplifier produces no noise or distortion
D) Amplifiers do not amplify power, only current or voltage
25) Which statements are true about sinusoidal waveforms? 25)
A) Sinusoidal waveforms do not repeat
B) They are a composite of fundamental and harmonic frequencies
C) A sinusoidal waveform has no fundamental frequency
D) A sinusoidal waveform does not contain harmonics
26) AC resistance is the ratio of the change in voltage divided by a change in current and can be seen 26)
on a characteristic curve. Which statement about characteristic curves is true?
A) analog components cannot be represented by a characteristic curve
B) ac characteristic curves are always linear
C) The ac resistance depends on what point on the IV characteristic curve the measurement is
made
D) dc characteristic curves always have the same slope
27) Electron Theory suggests that: 27)
A) Electrons actually move from a negative toward a positive voltage
B) Electrons and protons are responsible for current flow
C) Electrons move from a positive toward a negative voltage
D) Current flow is not a component of electron movement
28) What is the third odd harmonic of a 1KHz square wave? 28)
A) 3KHz B) 7KHz C) 5KHz D) 9KHz
29) How do spectrum analyzers measure signals? 29)
A) In the frequency domain
B) By converting a digital signal to an analog format
C) In the time domain
D) By digitizing an analog signal
30) In order to simplify a circuit, one can replace the source voltage with a current source in parallel 30)
with the simple resistance of a circuit. What is this method of circuit analysis?
A) Circuit analysis B) Ohm's law
C) Thevenin's theorem D) Norton's theorem
3
, Answer Key
Testname: CHAPTER 1
1) C
2) C
3) D
4) B
5) A
6) C
7) D
8) D
9) D
10) B
11) D
12) D
13) D
14) B
15) B
16) C
17) D
18) A
19) B
20) D
21) D
22) B
23) C
24) C
25) D
26) C
27) A
28) A
29) A
30) D
4
