Harmonic frequency - Study guides, Class notes & Summaries

What does increasing the use of solid-state switching devices contribute to current waveforms? a.A regulated voltage waveform also known as a uni-sinusoidal waveform b.A distorted voltage waveform also known as a bi-sinusoidal waveform c.A distorted voltage waveform also known as a non-sinusoidal waveform d.A regulated voltage waveform also known as a non-sinusoidal waveform - Answer-C Why is the substitution of defective foreign parts or materials for US standard parts a good strategy? a....

reflection return of the ultrasound wave to the transducer from a smooth surface when does the greatest amount of reflection occur when the incident beam is perpendicular to structure (specular reflection) scatter deflection of ultrasound waves from small structures (red blood cells scatter sound) refraction deflection of Ultrasound waves due to media with varied acoustic impedance attenuation loss of Ultrasound signal due to absorption in tissues as it travels ...

ARDMS SPI Exam |Questions and Verified Answers| 100% Correct| Grade A (Latest 2023/ 2024 Update) Q: what does coded excitation improve in addition to penetration? A. lateral resolution B. signal-to-noise ratio C. frame rate D. dynamic range Answer: B Q: how is lateral resolution determined for a pulsed-echo system using a tissue-mimicking test object? A. by observing spaces between reflectors perpendicular to the beam B. by observing spaces between reflectors along the beam path ...

IEC Midterm 2024 Questions and Answers Already Passed ___ are used to correct power factor. Capacitors ___ flow equals current flow. electron ___ has (have) control of unsafe acts on construction sites. General contractors ___ is the current-limiting characteristic of a transformer. Impedance ___ is the property of an electrical circuit that opposes any change in current. Inductance ___ law states "charged bodies attract or repel each other with a force that is directly prop...

IHS ILE Exam (study for the written hearing aid dealers/fitters exam) What does decreasing the compression ratio do, and when would you use this? - ANS-Soft sound amplification is unaltered, but gain is increased for moderate/loud sounds. Most often used if a PT complains loud sounds aren't loud enough or sound "mushy" What does increasing the compression ratio do, and when would you use this? - ANS-Soft sound gain is unaltered, but gain for moderate/loud sounds is lowered. Most often...

2023 AQA AS PHYSICS 7407/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] AS PHYSICS Paper 2 Wednesday 24 May 2023 Afternoon Time allowed: 1 hour 30 minutes Materials You are advised to spend about For this paper you must have: 35 minutes on Section C • a pencil and a ruler • a scientific calculator For Examiner’s Use • a Data and Formulae Booklet Question Mark • a protractor. 1 Instructions 2 • Use black ink or black ball-point pen. 3 • Fill in ...

What does decreasing the compression ratio do, and when would you use this? - ANSWER Soft sound amplification is unaltered, but gain is increased for moderate/loud sounds. Most often used if a PT complains loud sounds aren't loud enough or sound "mushy" What does increasing the compression ratio do, and when would you use this? - ANSWER Soft sound gain is unaltered, but gain for moderate/loud sounds is lowered. Most often used if a PT complains loud/moderate sounds are too loud or backgrou...

____ is defined as specific area or location where Doppler shift info is being obtained. A. spectral broadening B. nyquist limit C. sample volume D. spectral window -answer- C. sample volume Spatial resolution is: A. the minimum reflector separation required to produce separate echos. B. highest with linear phased arrays. C. the weakest reflected signal the transducer can receive D. another term for slice thickness resolution -answer- A. the minumum reflector separation required to pr...

COMD 5070 - Final Exam Questions and Answers Latest updated 2024/2025 (100% Solved) what does it mean for science to be empirical? - based on data what does it mean for science to be deterministic? - obeys physical laws what does it mean for science to be predictive? - if you do this.... then that will happen what does it mean for science to be parsimonious? - uses the simplest explanation possible how many semitones are in one octave? - 12 semitones how much sampling is enough? - sample a...

simple and complex period waves correct answers simple: period oscillations of constant amplitudes, complex: sum of sine waves (T=.01s,F0=100Hz) frequency, amplitude, phase correct answers frequency: how fast, F=1/T amplitude: how big? phase: when? power spectra correct answers a snapshot, do not convey any time information because they are just a small window in time spectrogram correct answers a movie, poor time resolution, good frequency resolution - wideband or narrowband make it ...