Reflected impedance - Study guides, Class notes & Summaries

What is SCS? - ️️Structured Cabling System What is refraction? - ️️The change of direction experienced by a wave of radiated energy when passing from one medium to another having a different dielectric constant or index of refraction What is reflection? - ️️The abrupt change in direction of a wave front (wireless signal, light signal) at the interface between two dissimilar media such that the incident wave front returns into the medium from which it originated. In wireless transmi...

SPI Practice Test Questions and Answers 2023 Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and increases penet...

Of the following sound wave modes, which one has multiple or varying wave velocities? a. Longitudinal waves b. Shear waves c. Transverse waves d. Lamb waves - ️️Lamb waves Which of the following would be considered application(s) of ultrasonic techniques? a. Determination of a materials elastic modulus b. Study of a materials metallurgical structure c. Measurement of a materials thickness d. All of the above - ️️All of the above The only significant sound wave mode that wil...

What is an echo correct answers Rf energy reflected from an object What four types of energy does an echo provide? correct answers bearing, range, elevation, velocity What is length of line (LOS) known as? correct answers range What is the most commonly used reference level in the decibel system for radar? correct answers 1mW To be separately distinguishable by the radar system, two objects that must be separated by how many beam widths? correct answers atleast one beam width What...

URR mock exam 1 SPI Verified Answers ____ 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 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 A. the minumum reflect...

EVERY test bank/study guide question for Adult Health Exam 3 1. What is an ability that is a primary difference in the skills of a certified critical care nurse compared with nurses certified in medical-surgical nursing? a. Diagnose and treat life-threatening diseases b. Detect and manage early complications of health problems c. Provide intensive psychologic support to the patient and family d. Use advanced technology to assess and maintain physiologic function 1. d. One of the primary c...

SPI Practice Test Already Graded A+ M mode ️which mode has time on one axis and depth on another? preprocessing ️write zoom is considered: improve, decrease ️increasing the color Doppler line density will _____ color Doppler resolution but will ______ the frame rate enhancement ️the increase in the amplitude and intensity of returning echoes due to low attenuation structures: memory ️preprocessing occurs before: refraction ️which of the following does not occur with n...

NCTI Service Technician Quiz Bank with 100% correct Answers | Latest 2023/2024 What are three principle characteristics that define an AC waveform? -- The three principle characteristics that define an AC waveform are: (1) frequency; (2) wavelength; and (3) amplitude. What is one of the basic principles of resistance reflected in the familiar practices of grounding and bonding? -- Grounding and bonding practices reflect the basic principle that electricity always follows the path of least ...

NCTI Service Technician: Think About it correctly answered to pass 2023What are three principle characteristics that define an AC waveform? - correct answer The three principle characteristics that define an AC waveform are: (1) frequency; (2) wavelength; and (3) amplitude. What is one of the basic principles of resistance reflected in the familiar practices of grounding and bonding? - correct answer Grounding and bonding practices reflect the basic principle that electricity always follows t...

Ultrasound Questions and Answers 2023 What is ultrasound? Ultrasound is any sound wave above the frequency of 20kHz (above human hearing). What type of waves are sound waves, and what does this mean for them? Sound waves are longitudinal waves - so they can only pass through a material medium, not a vacuum. How can we figure out the wavelength of ultrasound waves in tissue? λ = v/f What does the equation λ = v/f show? The higher the frequency, the shorter the waveleng...