ATT Test
ATT Test 3 Actual Exam Complete Questions with Correct
Answers (Verified Answers) Already Graded A+2025
What is the frequency of a wave? -Correct Answer ✔number of cycles per second
What is frequency measured in? -Correct Answer ✔Hertz
3 cycles per second equals how many hertz? -Correct Answer ✔3 Hz
What is the period of a wave? -Correct Answer ✔Time per cycle
What is wavelength? -Correct Answer ✔the actual distance between beginning and end
of one cycle (meters/centimeters)
What is induction? -Correct Answer ✔generation of AC current by changing a magnetic
field (flux variation)
Flux variation is (directly/indirectly) proportional to induction and current? -Correct
Answer ✔directly
What is needed to induce current? -Correct Answer ✔conductor, magnetic field, relative
motion
What is peak voltage? -Correct Answer ✔highest positive or negative voltage obtained
What is peak to peak voltage? -Correct Answer ✔determined by doubling peak voltage,
from highest positive point to lowest negative point
What is average voltage? -Correct Answer ✔Calculated using sum of all angles
contained in 180 degrees (0.637 X peak V)
What is RMS voltage? -Correct Answer ✔most common method to describe voltage of
sine wave (0.707 X peak V)
120 VAC RMS = How much VDC? -Correct Answer ✔120 VDC
What is phase angle? -Correct Answer ✔amount by which waveforms lead or lag one
another
What phase angle has peaks of OPPOSITE POLARITY happening at the same time? -
Correct Answer ✔180 degrees
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, ATT Test
What are harmonic frequencies? -Correct Answer ✔echoes of the fundamental
frequency, creates non-sinusoidal waves when combined with fundamental frequency
How are harmonic frequencies calculated? -Correct Answer ✔determined by multiplying
fundamental frequency by harmonic number
What do oscilloscopes directly measure? -Correct Answer ✔Amplitude, period,
waveshape
Most oscilloscopes directly measure what type of voltage? -Correct Answer ✔Peak to
peak
Multimeters measure what type of voltage? -Correct Answer ✔RMS
Bandwidth is the highest _____ an oscilloscope can measure? -Correct Answer
✔Frequency
What is the point of probe compensation? -Correct Answer ✔eliminates distortion of
input signal
What type of square wave should be produced when doing probe compensation? -
Correct Answer ✔5 VPP 1kHZ
What does a function generator do? -Correct Answer ✔Provides a known input signal
so tech can test a circuit
What does DC offset do? -Correct Answer ✔Adds DC voltage to AC waveform
What does the range control do (function generator)? -Correct Answer ✔Sets coarse
frequency
What are four functions of frequency counter? -Correct Answer ✔Frequency, period,
totalize, check
How is a magnetic field created? -Correct Answer ✔current flowing through conductor
What are inductors? -Correct Answer ✔component with the ability to concentrate a
magnetic field (opposes changes in DC current)
What happens to current when a magnetic field expands? -Correct Answer ✔Increases
Voltage induced in inductor is _____ to applied voltage and _____ current -Correct
Answer ✔Opposite/opposes
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ATT Test 3 Actual Exam Complete Questions with Correct
Answers (Verified Answers) Already Graded A+2025
What is the frequency of a wave? -Correct Answer ✔number of cycles per second
What is frequency measured in? -Correct Answer ✔Hertz
3 cycles per second equals how many hertz? -Correct Answer ✔3 Hz
What is the period of a wave? -Correct Answer ✔Time per cycle
What is wavelength? -Correct Answer ✔the actual distance between beginning and end
of one cycle (meters/centimeters)
What is induction? -Correct Answer ✔generation of AC current by changing a magnetic
field (flux variation)
Flux variation is (directly/indirectly) proportional to induction and current? -Correct
Answer ✔directly
What is needed to induce current? -Correct Answer ✔conductor, magnetic field, relative
motion
What is peak voltage? -Correct Answer ✔highest positive or negative voltage obtained
What is peak to peak voltage? -Correct Answer ✔determined by doubling peak voltage,
from highest positive point to lowest negative point
What is average voltage? -Correct Answer ✔Calculated using sum of all angles
contained in 180 degrees (0.637 X peak V)
What is RMS voltage? -Correct Answer ✔most common method to describe voltage of
sine wave (0.707 X peak V)
120 VAC RMS = How much VDC? -Correct Answer ✔120 VDC
What is phase angle? -Correct Answer ✔amount by which waveforms lead or lag one
another
What phase angle has peaks of OPPOSITE POLARITY happening at the same time? -
Correct Answer ✔180 degrees
1|Page
, ATT Test
What are harmonic frequencies? -Correct Answer ✔echoes of the fundamental
frequency, creates non-sinusoidal waves when combined with fundamental frequency
How are harmonic frequencies calculated? -Correct Answer ✔determined by multiplying
fundamental frequency by harmonic number
What do oscilloscopes directly measure? -Correct Answer ✔Amplitude, period,
waveshape
Most oscilloscopes directly measure what type of voltage? -Correct Answer ✔Peak to
peak
Multimeters measure what type of voltage? -Correct Answer ✔RMS
Bandwidth is the highest _____ an oscilloscope can measure? -Correct Answer
✔Frequency
What is the point of probe compensation? -Correct Answer ✔eliminates distortion of
input signal
What type of square wave should be produced when doing probe compensation? -
Correct Answer ✔5 VPP 1kHZ
What does a function generator do? -Correct Answer ✔Provides a known input signal
so tech can test a circuit
What does DC offset do? -Correct Answer ✔Adds DC voltage to AC waveform
What does the range control do (function generator)? -Correct Answer ✔Sets coarse
frequency
What are four functions of frequency counter? -Correct Answer ✔Frequency, period,
totalize, check
How is a magnetic field created? -Correct Answer ✔current flowing through conductor
What are inductors? -Correct Answer ✔component with the ability to concentrate a
magnetic field (opposes changes in DC current)
What happens to current when a magnetic field expands? -Correct Answer ✔Increases
Voltage induced in inductor is _____ to applied voltage and _____ current -Correct
Answer ✔Opposite/opposes
2|Page
