Electronics Exam 2
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24 Terms
Harmonics are the _____ of the basic fundamental frequencies
Multiplier
What are the most common frequencies in an electrical distribution system
3rd to 25th
if the base harmonic is 60hz, what is the second and third
120
180
When harmonics are prevalent what can happen to electronic equipment
they become mechanically resonant to the magnetic fields
When harmonics are present devices can omit a _____ _____
Buzzing sound
SMPS stands for what?
Switched mode power supply
SMPS’s are considers to be ___-____ loads
Non-Linear loads
What are the 2 types of Non linear loads
Single phase
3 phase
Where are most single phase non linear loads found
Office Buildings
Where are most 3 phase non linear loads found
Factory’s
Industrial plants
How is harmonic distortion measured?
THD
What does THD stand for
Total Harmonics Distortion
How does the distortion travel back to the connected equipment
Through the power supply lines
Can distortion impact the other equipment/ devices connected to the same power source?
Yes
Note 
Flashcards (29)