Alternating currents - Study guides, Class notes & Summaries

Facial Electrical ITEC 2 Questions and Answers Graded A+ At what distance from the skin should the infra red lamp be positioned Not less than 45 cm (18 inches) from the highest point of the area to be treated At what stage of the faradic treatment can the current be increased? During the stimulation period During vacuum suction, waste products are removed from the skin via which of the following systems Lymphatic Ethically, which of the following treatment plans should be recom...

Level 2 Module 1 Alternating Currents Verified and latest 2024 exam

Active Shielding ~~> The use of a coil of wire, with an electrical current running through it, to produce an electromagnetic field opposing the static magnetic field, to reduce the fringe field. Bsub0 ~~> The unit used to describe the static magnetic field. Deflection ~~> The amount of attraction an object has to the static magnetic field. Diamagnetism ~~> A weakly repulsive force when placed in a strong static magnetic field. Faradays Law of Induction 2 | P a g ...

Physiotherapy SCNM Exam Study Guide with Complete Solutions Interferential - Ans:-Two low amplitude alternating currents with one usually being at 4000 Hz and one at 4100Hz. A beat current is produced with a frequency equal to the difference between the two applied currents. The amplitude is equal to the sum of the amplitudes of the two applied currents; sinusoidal AC - 2 currents are arranged to cross and result in a "beat" frequency as the difference of the two currents - very comf...

Slew rate ~~> Speed at which gradient coil turns on and off Time-varying Gradient ~~> Induced current in a patient Magnetic Flux Lines ~~> Travel from North to South pole permanent magnet ~~> Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector Resistive magnet ~~> Can be turned on and off Costly due to cooling 2 | P a g e | © copyright 2024/2025 | Grade A+ Master01 | September, 2024/2025 | Latest update Approximately 0....

AP Environmental Science Exam Review Questions with solutions 2024 abiotic Pertaining to factors or things that are nonliving. acid Any compound that releases hydrogen ions when dissolved in water. Also, a water solution that contains a surplus of hydrogen ions. A horizon a soil horizon; the layer below the O layer is called the A layer. The A layer is formed of weathered rock, with some organic material; often referred to as topsoil. alkaline a basic substance; chemica...

Stationary Engineer Electric Exam Questions and Answers 100% Pass An AC circuit consists only of a pure inductance and a power source. The relationship between the voltage and the current in this circuit is that the - Correct Answer ️️ - current lags the voltage The power factor of a load is equal to the ____________ power divided by the ____________ power. - Correct Answer ️️ -True ; apparent A 10-ohms and 20-ohms resistor are connected in parallel. The total line current drawn ...

Fundamentals of Physics Exam 4 | Questions and Answers Sonar is a technology used to make maps of the sea floor, as well as to find fish and military targets. Sonar is very similar to medical ultrasound, in that it makes images using sound, but the sonar device is attached to the bottom of a boat and projects downward through the water. While medical ultrasound uses frequencies in the MHz, sonar works best with lower frequencies, because it has to travel longer distances. Calculate the wavele...

Stationary Engineer Electric Graded A An AC circuit consists only of a pure inductance and a power source. The relationship between the voltage and the current in this circuit is that the ️current lags the voltage The power factor of a load is equal to the ____________ power divided by the ____________ power. ️True ; apparent A 10-ohms and 20-ohms resistor are connected in parallel. The total line current drawn by this parallel combination is 30 amps. Under these conditions, the ...

Eddy currents are circulating electrical currents induced in conductive materials by: - Answer-an alternating magnetic field The method used to generate eddy currents in a test specimen by means of a coil can most closely be compared with the action of a: - Answer-transformer Electromagnetic testing relies on the principle of: - Answer-electromagnetic induction When the electrical current in an eddy current coil reverses direction, the: - Answer-direction of the eddy currents in the test p...