CHAPTER 2 Electromagnetic
Compatibility Exam 2025 Questions
and Answers 100% Pass
Define electromagnetic compatibility as it relates to telecommunications. - ✔✔The
ability of a device, equipment, or system to operate properly in its intended
electromagnetic environment without introducing significant electromagnetic
interference into the environment
Define electromagnetic interference. - ✔✔The transfer of electromagnetic energy
from one device or system to another device or system operating in the same
environment that causes interference with the normal operation of devices or
systems
When does the potential for EMI increase? - ✔✔When two devices or systems share
a common electromagnetic environment and their operations frequencies overlap
Name the 4 mechanisms through which coupling between two circuits can occur. -
✔✔1. Conductive coupling
2. Inductive coupling
3. Capacitive coupling
4. Electromagnetic coupling
What type of coupling may occur when a common ac branch circuit is shared
between two devices? - ✔✔Conductive coupling
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, What causes inductive coupling? - ✔✔Magnetic fields
What causes capacitive coupling? - ✔✔Electric fields
Name 3 essential elements of any EMC problem. - ✔✔1. Source of electromagnetic
interference (EMI)
2. Susceptible device or system that cannot perform as designed
3. Coupling path that promotes the disturbance
What types of energy are included in the electromagnetic spectrum? - ✔✔Light
Radio Waves
Microwaves
IR radiation
Ultraviolet rays
X Rays
Gamma Rays
What is the speed of light? - ✔✔=300,000 kms/s (186,300 mi/s)
What is the formula for velocity of light (c)? - ✔✔f multiplied by x=c
Where:
f= frequency in hertz
x= wavelength in meters
c= velocity of light in meters per second
Which type of energy has the longest wavelengths in the electromagnetic spectrum?
- ✔✔Radio waves
What type of energy has the shortest wavelengths in the electromagnetic spectrum? -
✔✔Gamma Ray
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
Compatibility Exam 2025 Questions
and Answers 100% Pass
Define electromagnetic compatibility as it relates to telecommunications. - ✔✔The
ability of a device, equipment, or system to operate properly in its intended
electromagnetic environment without introducing significant electromagnetic
interference into the environment
Define electromagnetic interference. - ✔✔The transfer of electromagnetic energy
from one device or system to another device or system operating in the same
environment that causes interference with the normal operation of devices or
systems
When does the potential for EMI increase? - ✔✔When two devices or systems share
a common electromagnetic environment and their operations frequencies overlap
Name the 4 mechanisms through which coupling between two circuits can occur. -
✔✔1. Conductive coupling
2. Inductive coupling
3. Capacitive coupling
4. Electromagnetic coupling
What type of coupling may occur when a common ac branch circuit is shared
between two devices? - ✔✔Conductive coupling
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, What causes inductive coupling? - ✔✔Magnetic fields
What causes capacitive coupling? - ✔✔Electric fields
Name 3 essential elements of any EMC problem. - ✔✔1. Source of electromagnetic
interference (EMI)
2. Susceptible device or system that cannot perform as designed
3. Coupling path that promotes the disturbance
What types of energy are included in the electromagnetic spectrum? - ✔✔Light
Radio Waves
Microwaves
IR radiation
Ultraviolet rays
X Rays
Gamma Rays
What is the speed of light? - ✔✔=300,000 kms/s (186,300 mi/s)
What is the formula for velocity of light (c)? - ✔✔f multiplied by x=c
Where:
f= frequency in hertz
x= wavelength in meters
c= velocity of light in meters per second
Which type of energy has the longest wavelengths in the electromagnetic spectrum?
- ✔✔Radio waves
What type of energy has the shortest wavelengths in the electromagnetic spectrum? -
✔✔Gamma Ray
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
