ASSOCIATE CET STUDY GUIDE 2026 EXAM QUESTIONS
AND ANSWERS GRADED A+
✔✔Choose three of the following amplifier configuration is that yield the highest power
gains.
A. Common-grid
B. Common-cathode
C. Common-plate
D. Common-source
E. Common-gate
F. Common-drain
G. Common-emitter
H. Common-base
I. Common-collector - ✔✔B. Common-cathode
D. Common-source
G. Common-emitter
✔✔Given the following information about a common-emitter amplifier, a .01Vp-p input
signal causes transistor's base current to vary from 70μA to 50μA. This causes the
collector current to vary from 3.5mA to 2.5mA through our 2.2kΩ load. Determine the
dynamic current gain.
A. 10
B. 20
C. 50
D. 100 - ✔✔C. 50
✔✔Which of the following amplifier configuration(s) would you likely find being used in a
linear push-pull arrangement?
A. Class A
B. Class B
C. Class C
D. All of the above - ✔✔B. Class B
✔✔Is a 1.02 MHz signal in a 1.475 MHz signal are fed to a common-emitter transistor
amplifier biased to operate in a non-linear manner we would expect to see which of the
following frequencies in the output?
A. 455 kHz
B. 1.02 MHz
C. 1.475 MHz
D. 2.495 MHz
E. All of the above - ✔✔E. All of the above
,✔✔Which of the following terms is associated with a commercial receiver being able to
reject image frequencies?
A. Sensitivity
B. Selectivity
C. Discrimination
D. Bandwidth - ✔✔B. Selectivity
✔✔Which of the following circuits can be used to recover audio from an IF in a FM
receiver?
A. Phase Locked Loop
B. Class A, common-gate JFET amplifier
C. Push-pull, class A JFET amplifier
D. Mixer - ✔✔A. Phase Locked Loop
✔✔How do you calculate the gain of a non-inverting operational amplifier?
A. Output/input
B. -output/input
C. 1+Rf/Ri
D. 1-Rf/Ri - ✔✔A. Output/input
✔✔If the frequency of the input signal to a broadband Op-Amp increases, the output
signal level __________.
A. Increases
B. Decreases
C. Remains the same
D. Increases the frequency - ✔✔B. Decreases
✔✔When measuring power to a speaker, a doubling of the power represents a 6 dB
increase.
A. True
B. False - ✔✔B. False
✔✔What does the acronym FCC mean?
A. Federal Committee of Communications
B. Financial Communications Commissary
C. Federal Communications Commission
D. Federal Communications Command
, E. Faraday Commission of Communications - ✔✔C. Federal Communications
Commission
✔✔What is not a part of a superheterodyne radio receiver?
A. Intermediate Frequency Circuit
B. Radio Frequency Circuit
C. Audio Frequency Circuit
D. Audio Radiation Resistance Circuit
E. Mixer Circuit - ✔✔D. Audio Radiation Resistance Circuit
✔✔Which part of a superheterodyne receiver rectifies the RF carrier?
A. AF Circuit
B. Detector Circuit
C. Low Pass Filter
D. Modulation
E. RF Circuit - ✔✔B. Detector Circuit
✔✔How long should a ¹/₄ wavelength vertical antenna be that is designed for operation
on 146 MHz?
A. 1.1 feet
B. 1.6 feet
C. 1.9 feet
D. 2.3 feet
E. 3.2 feet - ✔✔B. 1.6 feet
✔✔What is the common impedance of radio communication and television coaxial
cable, respectively?
A. 35 and 55 ohms
B. 50 and 75 ohms
C. 60 and 93 ohms
D. 77 and 98 ohms
E. 80 and 100 ohms - ✔✔B. 50 and 75 ohms
✔✔Which layer of the ionosphere absorbs high frequency radio waves during daylight
hours?
A. D Layer
B. E Layer
C. F Layer
D. F1 Layer
E. F2 Layer - ✔✔A. D Layer
AND ANSWERS GRADED A+
✔✔Choose three of the following amplifier configuration is that yield the highest power
gains.
A. Common-grid
B. Common-cathode
C. Common-plate
D. Common-source
E. Common-gate
F. Common-drain
G. Common-emitter
H. Common-base
I. Common-collector - ✔✔B. Common-cathode
D. Common-source
G. Common-emitter
✔✔Given the following information about a common-emitter amplifier, a .01Vp-p input
signal causes transistor's base current to vary from 70μA to 50μA. This causes the
collector current to vary from 3.5mA to 2.5mA through our 2.2kΩ load. Determine the
dynamic current gain.
A. 10
B. 20
C. 50
D. 100 - ✔✔C. 50
✔✔Which of the following amplifier configuration(s) would you likely find being used in a
linear push-pull arrangement?
A. Class A
B. Class B
C. Class C
D. All of the above - ✔✔B. Class B
✔✔Is a 1.02 MHz signal in a 1.475 MHz signal are fed to a common-emitter transistor
amplifier biased to operate in a non-linear manner we would expect to see which of the
following frequencies in the output?
A. 455 kHz
B. 1.02 MHz
C. 1.475 MHz
D. 2.495 MHz
E. All of the above - ✔✔E. All of the above
,✔✔Which of the following terms is associated with a commercial receiver being able to
reject image frequencies?
A. Sensitivity
B. Selectivity
C. Discrimination
D. Bandwidth - ✔✔B. Selectivity
✔✔Which of the following circuits can be used to recover audio from an IF in a FM
receiver?
A. Phase Locked Loop
B. Class A, common-gate JFET amplifier
C. Push-pull, class A JFET amplifier
D. Mixer - ✔✔A. Phase Locked Loop
✔✔How do you calculate the gain of a non-inverting operational amplifier?
A. Output/input
B. -output/input
C. 1+Rf/Ri
D. 1-Rf/Ri - ✔✔A. Output/input
✔✔If the frequency of the input signal to a broadband Op-Amp increases, the output
signal level __________.
A. Increases
B. Decreases
C. Remains the same
D. Increases the frequency - ✔✔B. Decreases
✔✔When measuring power to a speaker, a doubling of the power represents a 6 dB
increase.
A. True
B. False - ✔✔B. False
✔✔What does the acronym FCC mean?
A. Federal Committee of Communications
B. Financial Communications Commissary
C. Federal Communications Commission
D. Federal Communications Command
, E. Faraday Commission of Communications - ✔✔C. Federal Communications
Commission
✔✔What is not a part of a superheterodyne radio receiver?
A. Intermediate Frequency Circuit
B. Radio Frequency Circuit
C. Audio Frequency Circuit
D. Audio Radiation Resistance Circuit
E. Mixer Circuit - ✔✔D. Audio Radiation Resistance Circuit
✔✔Which part of a superheterodyne receiver rectifies the RF carrier?
A. AF Circuit
B. Detector Circuit
C. Low Pass Filter
D. Modulation
E. RF Circuit - ✔✔B. Detector Circuit
✔✔How long should a ¹/₄ wavelength vertical antenna be that is designed for operation
on 146 MHz?
A. 1.1 feet
B. 1.6 feet
C. 1.9 feet
D. 2.3 feet
E. 3.2 feet - ✔✔B. 1.6 feet
✔✔What is the common impedance of radio communication and television coaxial
cable, respectively?
A. 35 and 55 ohms
B. 50 and 75 ohms
C. 60 and 93 ohms
D. 77 and 98 ohms
E. 80 and 100 ohms - ✔✔B. 50 and 75 ohms
✔✔Which layer of the ionosphere absorbs high frequency radio waves during daylight
hours?
A. D Layer
B. E Layer
C. F Layer
D. F1 Layer
E. F2 Layer - ✔✔A. D Layer
