[STUDY GUIDE] • HIGH-YIELD PRACTICE & REVIEW EDITION
CETa Exam Questions & Verified
Rationalized Answers, Fully Updated
2026/2027 Edition
Comprehensive Examination Question Bank • In-Depth Rationales • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
194 Questions 12 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 194 verified questions with detailed rationales covering concepts in electronics and
electrical engineering. Each item pairs a board-style question with the correct answer and a concise
explanation of the underlying principle, making it suitable for exam preparation, course review, and certification
study.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus Questions Share (%)
Radio Frequency and Signal This topic covers the principles of RF frequencies, signal
Propagation propagation, and related measurements. 17 Qs 8.8%
Oscilloscope Usage and Explore the functionalities and applications of various types of
Functions oscilloscopes in electronic testing. 17 Qs 8.8%
Rectification and Power This topic includes the principles of rectifiers, power supplies,
Supplies and voltage measurements. 16 Qs 8.2%
Resistance, Capacitance, and Examine the concepts of resistance, capacitance, and
Inductance inductance in electrical circuits. 16 Qs 8.2%
Electronic Components and Understand the functions and characteristics of various
Their Functions electronic components used in circuits. 16 Qs 8.2%
Analyze the differences and relationships between digital and
Digital and Analog Signals analog signal processing. 16 Qs 8.2%
Learn fundamental circuit theory concepts including Ohm's
Circuit Theory and Analysis Law and impedance. 16 Qs 8.2%
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 40
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Focus on best practices for soldering techniques and
Soldering and Circuit Assembly assembly of electronic circuits. 16 Qs 8.2%
Motors and Electromechanical Investigate the operation and characteristics of various types
Systems of motors and generators. 16 Qs 8.2%
Data and Information Explore methods of data transmission in electronic systems
Transmission including binary encoding. 16 Qs 8.2%
Audio and Communication Examine the principles of audio signal processing and
Electronics communication technologies. 16 Qs 8.2%
Understand safety protocols and ESD protection in electronic
Safety and ESD Considerations systems. 16 Qs 8.2%
Total Exam Coverage 12 Integrated Topic Modules 194 Qs 100.0%
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 40
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
TOPIC 1: RADIO FREQUENCY AND SIGNAL PROPAGATION
17 Questions • 8.8% of Exam • This topic covers the principles of RF frequencies, signal propagation, and related measurements.
QUESTION 1
33 meters is the full wavelength in air for what RF frequency?
Correct Answer: 36 MHz.
Rationale: The wavelength of a radio frequency (RF) is determined by the speed of light in air and the frequency itself, with
the formula λ = c / f, where λ is the wavelength, c is the speed of light in air (approximately 299,792,458 meters per second),
and f is the frequency. By rearranging this formula to solve for frequency and plugging in the given wavelength of 33 meters,
we can calculate the corresponding frequency that results in a full wavelength of 33 meters in air.
QUESTION 2
A resistor has color stripes yellow, violet, violet, silver. It is?
Correct Answer: 470 MegOhm ± 10%.
Rationale: The resistor's color stripes represent a specific resistance value based on the color code, where yellow
represents a value of 4, violet represents a multiplier of 10^2 (or 100), and the presence of a silver stripe indicates a
tolerance of ± 10%. The combination of these values, 4 × 100 ± 10%, is derived from the color code system to provide a
precise calculation of the resistor's resistance.
QUESTION 3
What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when
connected in series?
Correct Answer: 25 Pf.
Rationale: When capacitors are connected in series, the reciprocal of the total capacitance is equal to the sum of the
reciprocals of the individual capacitances, allowing us to calculate the total capacitance. By applying this formula, the total
capacitance of three capacitors valued at 100uf, 100uf, and 50uf can be determined to be 25 pf (picofarads).
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 40
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 4
What emits a voltage when heated or cooled?
Correct Answer: Thermocouple.
Rationale: A thermocouple is a device that generates voltage due to the movement of electrons in response to temperature
changes, known as the Seebeck effect, which is a fundamental principle in thermoelectricity. This principle is based on the
idea that different materials have unique electronic properties that cause electrons to move when exposed to varying
temperatures, resulting in a measurable voltage.
QUESTION 5
The radio communication mode that utilizes the basic frequency and one of the side
bands:
Correct Answer: Is called "SSB".
Rationale: The radio communication mode that utilizes the basic frequency and one of the side bands is referred to as
Single Side Band (SSB) because it transmits a signal with only one of the side bands, either the upper or lower, in addition
to the base frequency. This mode is preferred for long-distance communication due to its ability to conserve bandwidth and
reduce interference, making it a widely used mode in amateur and commercial radio operations.
QUESTION 6
A power supply whose output voltage does not change whether the load is light or
heavy would have what percent of regulation?
Correct Answer: 0.
QUESTION 7
Sideband frequencies are produced when an radio carrier frequency is:
Correct Answer: Modulated.
Confidential • Student Study Edition • Practice & Review Guide Page 4 of 40
CETa Exam Questions & Verified
Rationalized Answers, Fully Updated
2026/2027 Edition
Comprehensive Examination Question Bank • In-Depth Rationales • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
194 Questions 12 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 194 verified questions with detailed rationales covering concepts in electronics and
electrical engineering. Each item pairs a board-style question with the correct answer and a concise
explanation of the underlying principle, making it suitable for exam preparation, course review, and certification
study.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus Questions Share (%)
Radio Frequency and Signal This topic covers the principles of RF frequencies, signal
Propagation propagation, and related measurements. 17 Qs 8.8%
Oscilloscope Usage and Explore the functionalities and applications of various types of
Functions oscilloscopes in electronic testing. 17 Qs 8.8%
Rectification and Power This topic includes the principles of rectifiers, power supplies,
Supplies and voltage measurements. 16 Qs 8.2%
Resistance, Capacitance, and Examine the concepts of resistance, capacitance, and
Inductance inductance in electrical circuits. 16 Qs 8.2%
Electronic Components and Understand the functions and characteristics of various
Their Functions electronic components used in circuits. 16 Qs 8.2%
Analyze the differences and relationships between digital and
Digital and Analog Signals analog signal processing. 16 Qs 8.2%
Learn fundamental circuit theory concepts including Ohm's
Circuit Theory and Analysis Law and impedance. 16 Qs 8.2%
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 40
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Focus on best practices for soldering techniques and
Soldering and Circuit Assembly assembly of electronic circuits. 16 Qs 8.2%
Motors and Electromechanical Investigate the operation and characteristics of various types
Systems of motors and generators. 16 Qs 8.2%
Data and Information Explore methods of data transmission in electronic systems
Transmission including binary encoding. 16 Qs 8.2%
Audio and Communication Examine the principles of audio signal processing and
Electronics communication technologies. 16 Qs 8.2%
Understand safety protocols and ESD protection in electronic
Safety and ESD Considerations systems. 16 Qs 8.2%
Total Exam Coverage 12 Integrated Topic Modules 194 Qs 100.0%
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 40
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
TOPIC 1: RADIO FREQUENCY AND SIGNAL PROPAGATION
17 Questions • 8.8% of Exam • This topic covers the principles of RF frequencies, signal propagation, and related measurements.
QUESTION 1
33 meters is the full wavelength in air for what RF frequency?
Correct Answer: 36 MHz.
Rationale: The wavelength of a radio frequency (RF) is determined by the speed of light in air and the frequency itself, with
the formula λ = c / f, where λ is the wavelength, c is the speed of light in air (approximately 299,792,458 meters per second),
and f is the frequency. By rearranging this formula to solve for frequency and plugging in the given wavelength of 33 meters,
we can calculate the corresponding frequency that results in a full wavelength of 33 meters in air.
QUESTION 2
A resistor has color stripes yellow, violet, violet, silver. It is?
Correct Answer: 470 MegOhm ± 10%.
Rationale: The resistor's color stripes represent a specific resistance value based on the color code, where yellow
represents a value of 4, violet represents a multiplier of 10^2 (or 100), and the presence of a silver stripe indicates a
tolerance of ± 10%. The combination of these values, 4 × 100 ± 10%, is derived from the color code system to provide a
precise calculation of the resistor's resistance.
QUESTION 3
What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when
connected in series?
Correct Answer: 25 Pf.
Rationale: When capacitors are connected in series, the reciprocal of the total capacitance is equal to the sum of the
reciprocals of the individual capacitances, allowing us to calculate the total capacitance. By applying this formula, the total
capacitance of three capacitors valued at 100uf, 100uf, and 50uf can be determined to be 25 pf (picofarads).
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 40
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
QUESTION 4
What emits a voltage when heated or cooled?
Correct Answer: Thermocouple.
Rationale: A thermocouple is a device that generates voltage due to the movement of electrons in response to temperature
changes, known as the Seebeck effect, which is a fundamental principle in thermoelectricity. This principle is based on the
idea that different materials have unique electronic properties that cause electrons to move when exposed to varying
temperatures, resulting in a measurable voltage.
QUESTION 5
The radio communication mode that utilizes the basic frequency and one of the side
bands:
Correct Answer: Is called "SSB".
Rationale: The radio communication mode that utilizes the basic frequency and one of the side bands is referred to as
Single Side Band (SSB) because it transmits a signal with only one of the side bands, either the upper or lower, in addition
to the base frequency. This mode is preferred for long-distance communication due to its ability to conserve bandwidth and
reduce interference, making it a widely used mode in amateur and commercial radio operations.
QUESTION 6
A power supply whose output voltage does not change whether the load is light or
heavy would have what percent of regulation?
Correct Answer: 0.
QUESTION 7
Sideband frequencies are produced when an radio carrier frequency is:
Correct Answer: Modulated.
Confidential • Student Study Edition • Practice & Review Guide Page 4 of 40
