Frequency range 0 0 mhz - Study guides, Class notes & Summaries

SPI PRACTICE QUESTIONS WITH COMPLETE SOLUTIONS. Sound waves are: - correct answer. longitudinal, mechanical The speed of sound in soft tissue is closest to: - correct answer. 1,500 m/s The frequency closest to the lower limit of ultrasound is: - correct answer. 15,000 Hz Which is not an acoustic variable? - correct answer. intensity The effects of soft tissue on ultrasound are called: - correct answer. acoustic propagation properties All of the following ar...

Why are NAND and NOR gates the most used logic gates and categorized as universal gates? - in combinations of two or three, they can be configured to construct any other logic gate What position in the American Standard Code for Information Interchange (ASCII) character string is a single parity bit added? - the eighth-bit position to become the most significant bit (MSB) Why is the transmission control protocol (TCP) unsuitable for voice over Internet protocol (VoIP) applications? - TCP cr...

The doppler shift is 5000 Hz. The pulse repetition frequency is 9000 Hz. Which of the following is true? A. peak pressure gradient is 36mmHg B. range ambiguity will occur C. aliasing will occur D. the peak velocity is equal to 2 m/s - ️️C. aliasing will occur When evaluating a suspected arterial stenosis, a doppler angel of ____ degrees will produce the most accurate flow velocity. A. 0 B. 30 C. 60 D. 90 - ️️A. 0 Spatial resolution is: A. the minimum reflector separation req...

ARDMS SPI Exam |Complete Questions with Correct Answers Graded A+ When the direction of the wave propagation is parallel to the particle motion of the medium, the wave being transmitted is called a: A) surface wave. B) longitudinal wave. C) transverse wave. D) non-linear sound. B) longitudinal wave If the sound beam attenuated 6 dB, what will happen to the overall intensity? A) Quadrupled B) Doubled C) Halved D) Quartered D) Quartered Frequency increased from 3 MHz to 6 MHz,...

GROL Element 3: Complete Study Guide and Practice Questions for General Radiotelephone Operator License The product of the readings of an AC voltmeter and AC ammeter is called: Apparent power What is the term used to express the amount electrical energy stored in an electrostatic field? Joules What formula would determine the inductive reactance of a coil if frequency and coil inductance is known? Xl=2pi(fL) What determines the strength of a magnetic field around a conductor? The am...

Ultrasonic Waves that travel along the surface of a material and whose particle motion is elliptical.  Rayleigh Waves (Surface/Love Waves) In a material with a given velocity, when frequency is increased, the wavelength will __?  Decrease Ultrasonic vibrations can be propagated only in the longitudinal mode in which media?  Machine Oil (Liquid) If a 5.0 Mhz transducer is substituted for a 2.25 Mhz transducer ( 2.25 old/5.0 new), what would be the effect on the wavelength of th...

Corporal's Course Test 1 Questions and Answers Already Passed what does the acronym OSCAR stand for? Operational Stress Control and Readiness most frequency interference is always present in a military environment. where does man made interferences come from? electrical sources effective leadership depends on the moral examples set by the leader, not only as a warfighter but as a _____ and _____. citizen and human being in combat or peacetime, leaders demonstrate _____ _____ by...

The Associate CET Study Guide Exam 276 Questions with Verified Answers B+, or supply voltages in electronics products, is considered to be: A. +5 to +12 VDC B. 0 to 30 V DC C. +12 to 300 V DC D. The anode or plate voltage supply - CORRECT ANSWER D. The anode or plate voltage supply Leakage current in an electronic product, between either of the AC power cord conductors and the chassis or any exposed metals should not exceed _________. A. 5 microamps B. 500 microamps C. 5 millia...

Cpl's Course comp exam 1 with Verified Answers| 100% Correct| 100% Score What are the two principal sources of natural radio noise? - thunderstorms and stars What is the range of very high frequency (VHF) - 30-300 Mhz The frequency band characteristic in VHF for ground wave range is _ miles - 0-30 miles Leaders at all levels are responsible for maintaining a unit's combat readiness. The military occupational specialty (MOS) road maps help leaders by providing a guide to ensure that _ - T...

RADIOFREQUENCY (RF) - ELECTROMAGNETIC RADIATION LOWER IN ENERGY THAN INFRARED. THE RF USED IN MRI IS IN THE FORM OF A BURST OF RF ENERGY (PULSE) I THE 10 MHZ TO 100MHZ RANGE RF PULS, DELIVERED TO THE PATIENT BY RF TRANSMITTER. THE RF FREQUENCY, AT THE LARMOR FREQUENCY, RESULTS IN ROTATION OF THE NET MAGNETIZATION VECTRO AND PHASE COHERENCE OF THE NUCLEAR SPINS. AN RF COIL IS USED FOR TRANSMITTING AND RECEIVING MRI SIGNALS (RF). FRINGE FIELDS - WEAKER MAGNETIC FIELDS THAT ARE AWAY FROM THE I...