(Last Updated On: June 16, 2022)
This is the Multiples Choice Questions Part 3 of the Series in Engineering Electromagnetics as one of the General Engineering and Applied Sciences (GEAS) topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including past Board Questions in General Engineering and Applied Sciences (GEAS) field.
PRC Board of Electronics Engineering Examination Syllabi (ECE Board)
The licensure exam shall cover different areas in the field of Electronics Engineering as prescribed by the Board. Under the Implementing Rules and Regulation of R.A. 9292, the licensure exam shall compose of four subjects each with 100 items covering different areas and with its own bearing to the overall rating. The applicant shall have a general weighted average of more than 70% and a grade above 70% for each subject areas to pass the licensure exam.
Mathematics – 20%
1. College Algebra

 Equations in One Variable
 Functions
 Determinants
 Matrices
 Sequences and Series
2. Trigonometry
 Trigonometric functions
 Applications
3. Geometry
 Analytic Geometry
 Plane Geometry
 Solid Mensuration
4. Differential Calculus
 Derivatives and its Applications
 Functions, Continuity and Limits
 HigherOrder Derivatives
 Parametric Equations and Partial Differentiation
5. Integral Calculus
 Integration and its Applications
 Surface and Multiple Integrals and its Applications
6. Differential Equations
 FirstOrder, FirstDegree ODE and its Applications
 HigherOrder ODE and its Applications
7. Advanced Engineering Mathematics
 Complex Number and its Applications
 Power Series, Fourier Series and its Applications
 Laplace Transforms, Inverses, and its Applications
 Fourier Transforms, Inverses and its Applications
 ZTransforms
 Partial Differential Equations
8. Probability and Statistics
 Fundamental Principles of Counting
 Permutations and Combinations
 Measures of Central Tendency and Variations
 Probability Distributions
 Presentation of Data and Sampling Techniques
 Inferential Statistics
 Analysis of Variance, Regressions and Correlations
9. Discrete Mathematics
 Set Theory and Mathematical Logic
 Binary Operations
 Growth of Functions
 Algorithms
10. Numerical Methods
 Analysis of Errors
 Evaluation of Series Expansion of Functions
 Analysis of Variance, Regressions and Correlations
 Simultaneous Linear and Nonlinear
 ODE
 PDE
General Engineering and Applied Sciences – 20%
1. Engineering Mechanics
2. Strength of Materials
3. College Physics
4. General Chemistry
5. Thermodynamics
6. Engineering Materials
7. Engineering Economics
8. Engineering Management
9. Electromagnetics
10. Laws and Ethics
 Contract and specifications
 Telecommunications and broadcasting laws and regulations
 Electronics Engineering Law of 2004
 Code of professional ethics and conduct
 Philippine electronic code
Electronics Engineering – 30%
1. Electricity/Magnetism Fundamentals
 Atomic Structure
 Electric Charge
 Laws (ohms, Kirchhoff, coulomb, etc.)
 Magnetic Power
 Magnetic field/flux
 Magnetic/electric quantities/units
 Magnetic/electromagnet principles
2. Electrical Circuit
 Acdc circuits
 Resistors
 Inductors
 Capacitor
3. Solid State Devices/Circuits
 Semiconductor fundamentals
 Transistor components, circuits, analysis, and design
 Special services (photo, electric, photo voltaic etc.)
4. Power Generator, Sources, Principles and Applications
 Cells and batteries
 Electric Generator
 Electronic power supply
 Voltage regulation
 Distribution transformer
 MUPS/Floatbattery system
 Converters/inverters
5. Electronic (Audio/RF) Circuit, Analysis and Design
 Amplifiers
 Oscillators
 Rectifier
 Filters
 Voltage regulation
6. Tests and Measurements
 Voltohmammeter (analog/digital)
 RLZ bridges
 Oscilloscope
 RF meters
 Signal generators (audio, RF, video)
 Noise generators
 Power/reflectometer/grid dip meter
7. Microelectronics
 Integrated circuits components, characteristics, and products
 Operational amplifiers/multivibrators
8. Industrial Electronics Principles and Applications
 Electronic control system
 Industrial solidstate services
 Welding system/high frequency heating
 Feedback systems/servomechanism
 Transducers
 Motor speed control systems
 Robotic principles
 Bioelectrical principles
 Instrumentation and control
9. Computer Principles
 Analog/digital system
 Binary number system, Boolean algebra
 Mathematical logic and switching networks
 Basic digital circuits (logic, gates, flipflops, multivibrators etc.)
 Static and dynamic memory devices
 Programming and machine languages
 Information and acquisition processing
 Analog/Digital conversion
 Computer Networking
Electronics Systems and Technologies – 30%
A. Radio Communication Systems
1. Transmission Fundamentals

 Transmission system
 Transmission medium
 Primary line constants
 Velocity and line wavelength
 Characteristic Impedance
 Propagation constants
 Phase and group velocity
 Standing waves
 Voltage Standing Wave Ratio
 Telephone lines and cables
 Wave guides
 Balanced and unbalanced lines
 Twisted pair wire
 Coaxial Cable
 The decibel
 Power dB calculations
 Signal and Noise fundamentals
2. Acoustics

 Definition
 Frequency range
 Sound pressure level
 Sound Intensity
 Loudness level
 Pitch and frequency
 Internal and octave
 Sound distortion
 Room acoustics
 ElectroAcoustics transducers
3. Modulation

 Amplitude modulation
 Phase modulation
 Frequency modulation
 Pulse modulation
4. Noise

 External noise
 Phase noise
 Noise calculation and measurements
 Radio interference
5. Radiation and Wave Propagation

 Electromagnetic radiation
 Radio spectrum
 Wave propagation
 Radiation patterns
 Wavelength calculations
 Radiation resistance
 Diversity systems
6. Antennas

 Basic considerations
 Wire Radiators in Space
 Isotropic radiator
 Current and voltage distribution
 Resonant, nonresonant antennas
 Terms and definition
 Antenna gain and resistance
 Bandwidth, beamwidth, polarization
 Effects of ground on antennas
 Grounded, ungrounded antennas
 Grounding systems
 Antenna height
 Design and applications
 Matching systems
 Impedance calculations
 Antenna types
 Directional and nondirectional
 Microwave antennas
 Wideband and Special purpose antennas
7. Wire and wireless communications System

 The telephone set
 Connection and performance
 Exchange area plant
 Loop design
 Trunks in the exchange plant
 Insertion loss
 Traffic calculations
 Reference Equivalent and standards
 Telephone networks
 Signaling, Billing, CAMA, ANI
 Echo, signing and design loss
 Via net loss
 Network hierarchy, class type
 VF repeaters
 Transmission considerations in long distance network
 Telephone features – IDD, NDD, LEC
 Mobile communications
 Cellular communication, trunk radio, radio paging system etc.
8. Microwave Communications and Principles
9. Basic principles of various Electronics System

 Electrooptics/photonics/optoelectronics
 Electromagnetic
 Avionics, aerospace, navigational and military applications
 Medical electronics
 Cybernetics
 Biometrics
B. Digital and Data Communications Systems
1. Digital Communication Networks

 Bit and Binary transmission
 Signaling rate
 Error probability
 Digital filtering
 Switching
 Packet circuit
 Vertical circuit
 Open systems interconnection
 Multiplying, modulation, and synchronization
 Pulse code modulation
 Companding
 Encoding
 Bandwidth and signal to noise ratio
 Delta modulation
 Slope overload
 Adaptive delta modulation
 Codes and protocol
 Error detection and correction codes
 Digital carrier systems
 Frequency shift keying
 Phase shift keying
 Differential phase shift keying
 DC nature of data transmission
 Loops
 Neutral and polar
 Binary transmission and the concept of time
 Asynchronous and synchronous
 Timing
 Distortion
 Bits, band, WPM
 Data interface standards
 Data input/output devices
 Digital transmission on analog channel
 Modulation – demodulation schemes parameters
 Circuit conditioning
 Modem applications
 Serial and parallel transmission
2. Fiber Optics

 Principles of light, transmission
 Types
 Light sources, laser, LED
 Light detectors
 Modulation and waveform
 System design
 General application
 Design procedure
 Dispersion limited domain
 System bandwidth
 Splicing techniques
3. Satellite, Broadcasting and Cable TV System
a. Satellite system


 The satellite system
 Types of satellite
 Satellite orbit
 Uplink considerations
 Demand assignments multiple access
 Antenna tracking
 Satellite link budgets
 Path loss
 Figure of merit
 Ratio of carrier to thermal noise power
 Station margin
 VSAT

b. Broadcasting and Cable TV System


 Radio transmitter (AM, FM, Television)
 Studio (Microphone, Amplifiers, Cameras, Lighting etc.)
 Cable television

Continue Practice Exam Test Questions Part 3 of the Series
⇐ MCQ in Engineering Electromagnetics Part 2  ECE Board Exam
Choose the letter of the best answer in each questions.
101. Maxwell’s equations in __________ form give information at points of discontinuity in electromagnetic fields.
A. Differential
B. Integral
C. Algebraic
D. None of these
View Answer:Answer: Option B
Solution:
102. Another boundary condition using Maxwell’s equations is given as__________.
A. Htan ‘1’ + Htan ‘2’ = 0
B. Htan ‘1’ − Htan ‘2’ = 0
C. Htan ‘1’ + Htan ‘2’ = Js
D. Htan ‘1’− Htan ‘2’ = Js
View Answer:Answer: Option D
Solution:
103. At the point of discontinuity, __________ component of magnetic flux density is continuous.
A. Tangential
B. Normal
C. None of these
D. Cannot say
View Answer:Answer: Option B
Solution:
104. For those surfaces where surface charge density is __________ normal component of electric flux density is continuous.
A. Infinity
B. Unity
C. Zero
D. None of these
View Answer:Answer: Option C
Solution:
105. Waves are used in __________.
A. TV
B. Radio
C. Radar
D. All of these
View Answer:Answer: Option D
Solution:
106. Displacement current density ____________ current passing through a capacitor.
A. Represents
B. Does not represent
C. Is the same as
D. None of these
View Answer:Answer: Option B
Solution:
107. Line integral of an electric field around a closed path is __________.
A. infinity
B. unity
C. zero
D. None of these
View Answer:Answer: Option C
Solution:
108. __________ are caused by accelerated charges
A. Timevarying fields
B. Waves
C. Both (a) and (b)
D. None of these
View Answer:Answer: Option C
Solution:
109. At the Brewster angle, polarization ______________.
A. Cannot be reflected
B. Is reflected at 30°
C. Is reflected at 90°
D. None of these
View Answer:Answer: Option A
Solution:
110. Wave number has units of____________.
A. Radians
B. Meter
C. Radians/meter
D. None of these
View Answer:Answer: Option C
Solution:
111. Wave speed in terms of frequency f and wavelength λ is expressed as _________.
A. f/λ
B. λ/f
C. λ f
D. (λ + f)
View Answer:Answer: Option C
Solution:
112. For a lossy dielectric medium, ____________.
A. σ = 0
B. σ ≠ 0
C. None of these
D. Cannot say
View Answer:Answer: Option B
Solution:
113. Wave attenuation is given as ______________.
A. e+βx
B. eβx
C. e+αx
D. e−αx
View Answer:Answer: Option D
Solution:
114. In the case of a perfect dielectric medium, phase constant______________ as conductivity increases.
A. Increases
B. Decreases
C. Remains unchanged
D. None of these
View Answer:Answer: Option A
Solution:
115. Phase velocity is given as _________.
A. ωβ
B. βω
C. β/ω
D. None of these
View Answer:Answer: Option C
Solution:
116. In good conductors, rate of attenuation is __________.
A. Small
B. Large
C. Infinity
D. Zero
View Answer:Answer: Option C
Solution:
117. Power density has _________________.
A. A DC component
B. A second harmonic component
C. Both (a) and (b)
D. None of these
View Answer:Answer: Option C
Solution:
118. Reflection coefficient Γ is __________.
A. ≥100
B. = 10
C. ≤ 1
D. None of these
View Answer:Answer: Option C
Solution:
119. Which of the following expressions is correct?
A. (1 + Γ) = τ
B. (1 + τ) = Γ
C. (1 + Γ) τ = 0
D. (1 + τ)Γ = 0
View Answer:Answer: Option A
Solution:
120. Standing wave consists of two travelling waves of ____________ amplitudes and _____________ is direction.
A. Unequal, same
B. Unequal, opposite
C. Equal, same
D. Equal, opposite
View Answer:Answer: Option D
Solution:
121. SNR ranges from ______.
A. 0 to 1
B. 1 to 10
C. 10 to 100
D. 1 to ∞
View Answer:Answer: Option D
Solution:
122. The Smith chart is a ________ dimensional representation ofcomplex impedances with respect to coordinates.
A. Two
B. Three
C. Four
D. None of these
View Answer:Answer: Option C
Solution:
123. In a _________ transmission line, the reflection coefficient domain isa circle of unitary radius.
A. Lossy
B. Lossless
C. None of these
D. Cannot say
View Answer:Answer: Option B
Solution:
124. The Smith chart represents a family of circles obtained by varying normalized resistance in the range of __________.
A. −1 to 0
B. 0 to 1
C. 0 to ∞
D. −∞ to ∞
View Answer:Answer: Option C
Solution:
125. A family of arcs is obtained in the Smith chart by varying normalized reactance in a range of __________.
A. −1 to 0
B. 0 to 1
C. 0 to ∞
D. −∞ to ∞
View Answer:Answer: Option D
Solution:
126. Smith charts depict a wide impedance range of transmitter for _______VSWR.
A. Low
B. High
C. Medium
D. None of these
View Answer:Answer: Option B
Solution:
127. A cable or a wire is considered as a transmission line if its length is _________of the wavelength of the signal travelling through it.
A. Greater than 1/10
B. Less than 1/10
C. Greater than 1/5
D. Less than 1/5
View Answer:Answer: Option A
Solution:
128. Transmission lines facilitate _________propagation of energy.
A. Guided
B. Unguided
C. None of these
D. Cannot say
View Answer:Answer: Option A
Solution:
129. A transmission line is specified in terms of _________.
A. R, G,L
B. G, L,C
C. R, G, L,C
D. None of these
View Answer:Answer: Option C
Solution:
130. In planar transmission lines, C = _________.
A. σ b/d
B. μ d/b
C. b/d
D. None of these.
View Answer:Answer: Option C
Solution:
131. In a microstrip line, there is _________metal strip over the substrate.
A. A thin
B. A thick
C. No
D. None of these
View Answer:Answer: Option A
Solution:
132. In a fully lossless line, σ = _________.
A. 0
B. 1
C. ∞
D. None of these.
View Answer:Answer: Option C
Solution:
133. In a distortion less line, attenuation constant α is frequency_________.
A. Dependent
B. Independent
C. None of these
D. Cannot say
View Answer:Answer: Option B
Solution:
134. A distortion less line has _________.
A. Nonvanishing attenuation constant
B. Constant velocity
C. Constant real characteristic impedance
D. All of these
View Answer:Answer: Option D
Solution:
135. Voltage reflection coefficient is the ratio of _________ wave to_______ wave.
A. Incident, reflected
B. Reflected, incident
C. Incident, absorbed
D. Absorbed, incident
View Answer:Answer: Option B
Solution:
136. ________ are very efficient in a frequency range of 3300 GHz.
A. Transmission line
B. Wave guides
C. Both (a) and (b)
D. None of these
View Answer:Answer: Option B
Solution:
137. Wave guides ________ in DC applications.
A. Can also be used
B. Cannot be used
C. None of these
D. Cannot say
View Answer:Answer: Option B
Solution:
138. Wave guides are a type of _________ filter.
A. Low pass
B. All pass
C. Band pass
D. High pass
View Answer:Answer: Option D
Solution:
139. For lossless wave guides, σc ________and σ ______
A. ∞, 0
B. 0, ∞
C. 0, 0
D. ∞, ∞
View Answer:Answer: Option A
Solution:
140. In the TM mode, Ez _____ and Hz = ________.
A. 0, 0
B. 0, ∞
C. ∞ 0
D. None of these
View Answer:Answer: Option D
Solution:
141. In the TEM mode, Ez ______ and Hz =_______
A. 0, 0
B. 0, ∞
C. ∞, 0
D. None of these
View Answer:Answer: Option A
Solution:
142. Below the cutoff frequency, there is_______________.
A. Attenuation
B. No attenuation
C. Amplification
D. None of these.
View Answer:Answer: Option A
Solution:
143. Cutoff wavelength λc in the TE10 mode is ____________.
A. a
B. 2a
C. 4a
D. 8a
View Answer:Answer: Option B
Solution:
144. _______ velocity is the one at which loss of constant phase propagates down the guide.
A. Medium
B. Phase
C. Group
D. None of these
View Answer:Answer: Option B
Solution:
145. Information or energy through the wave guide travels at _______velocity.
A. Medium
B. Phase
C. Group
D. None of these
View Answer:Answer: Option C
Solution:
146. _______velocity is that whose resultant repeated reflected waves travel down the guide.
A. Medium
B. Phase
C. Group
D. None of these
View Answer:Answer: Option C
Solution:
147. ________ vector is needed to determine power flow in wave guides.
A. Poynting
B. Average Poynting
C. Power
D. Phase
View Answer:Answer: Option B
Solution:
148. Surface current density K on wave guide walls for ______ is given as
A. TM mode
B. TE mode
C. Both (a) and (b)
D. None of these
View Answer:Answer: Option C
Solution:
149. At _______ frequencies, RLC resonant circuits are replaced by electromagnetic cavity resonators.
A. Low
B. Medium
C. High
D. None of these
View Answer:Answer: Option C
Solution:
150. Resonator cavities are used in _______.
A. Klystron tubes
B. Bandpass filters
C. Wave meters
D. All of these
View Answer:Answer: Option D
Solution:
Complete List of MCQs in General Engineering and Applied Science per topic
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