Permanent magnet - Study guides, Class notes & Summaries

RI magnets described as giant versions of horseshoe magnets used as toys are: - Answer Permanent Which type of MRI magnet is made up of naturally ferromagnetic material? - Answer Permanent MRI magnets that require a steady current of electricity passed through coils wrapped around an iron or air core are: - Answer Resistive

Journeyman Electrician Exam Study Guide Questions & Answers | 75 Questions with 100% Correct Answers | Verified 2024 An electromagnet can be switched on and off And advantage of an electromagnet over a permanent magnet is

Without proper safety limits on the MR system exposure to the time-varying magnetic fields created by the rapid switching of the gradient could create a potential environment for: - ANSWER-Including electrical current in the patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? - ANSWER-true The orientation of the main magnetic field of a low field permanent magnet is vertical. True or false? - ANSWER-True ; permanent lowfield magnets utilize a mag...

The exact middle of the bore of the magnet is termed: - ANSWER-Isocenter Without proper safety limits on the MR system exposure to the time-varying magnetic fields created by the rapid switching of the gradient could create a potential environment for: - ANSWER-Including electrical current in the patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? - ANSWER-true The orientation of the main magnetic field of a low field permanent magnet is verti...

NCCER Electrical Module 2 Level 2 Motors Theory and Application Exam Questions and Answers. How DC motors operate? - correct answer -Magnetic lines of force are continuous and always form closed loops; Magnetic lines of force do not cross. Armature: (Definition) - correct answer -The rotating windings of a DC motor. The ____ is a movable electromagnet located between the poles of another fixed permanent (field) magnet as shown. - correct answer -Armature A twisting force called ______ must...

Electronic NOCTI Review WCCTC Latest 2023 Graded A+ Permanent Magnets- Readily retain their magnetic field for a long period of time Temporary Magnets- lose magnetism quickly Two types of magnets- Metallic Magnets & Ceramic Magnets Two Popular Classifications- Alcino & Cunife Coulomb's Law- Like poles repel and unlike poles attract Flux Lines- Lines of magnetic force that surround a magnet Four Basic Rules & Characteristics: 1. Flux lines have direction or polarity(N+S) 2. The lines o ...

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....

Armrit review test exam questions with solutions The exact middle of the bore of the magnet is termed: Isocenter Without proper safety limits on the MR system exposure to the time-varying magnetic fields created by the rapid switching of the gradient could create a potential environment for: Including electrical current in the patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? true The orientation of the main magnetic field of a low field per...

NCCER Electrical Module 2 Level 2 Motors Theory and Application Exam Questions and Answers. How DC motors operate? - correct answer -Magnetic lines of force are continuous and always form closed loops; Magnetic lines of force do not cross. Armature: (Definition) - correct answer -The rotating windings of a DC motor. The ____ is a movable electromagnet located between the poles of another fixed permanent (field) magnet as shown. - correct answer -Armature A twisting force called ______ must...

ARMRIT Review Test Questions & Answers 100% VerifiedARMRIT Review Test Questions & Answers 100% VerifiedARMRIT Review Test Questions & Answers 100% Verified The exact middle of the bore of the magnet is termed: - ANSWER-Isocenter Without proper safety limits on the MR system exposure to the time-varying magnetic fields created by the rapid switching of the gradient could create a potential environment for: - ANSWER-Including electrical current in the patient's tissues Faraday's Law ...