Permanent magnet - Study guides, Class notes & Summaries

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...

MRSO Exam 3 with Complete Solutions Slew rate Correct answer Speed at which gradient coil turns on and off Time-varying Gradient Correct answer Induced current in a patient Magnetic Flux Lines Correct answer Travel from North to South pole permanent magnet Correct answer Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector Resistive magnet Correct answer Can be turned on and off Costly due to cooling Approximately 0.6T Vertical or horizontal vecto

The most common type of magnet used in today's MR systems is the _______________. A. resistive magnet B. permanent magnet C. superconducting magnet D. open MR scanner correct answers C. superconducting magnet The positively charged part of an atom is the _____________. A. electron B. neutron C. proton D. nucleus correct answers C. proton When a hydrogen nucleus is positively charged and spins, it generates a small magnetic field called a _____________. A. larmor equation ...

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 be developed. _____ is produced by mounting a loop in a fixed magnetic field...

Intro Computer Automotive Test 2 Many modules require reference to rotational speed when calculating output commands. All the following are examples of speed sensors used to create input signals EXCEPT one. A. Crankshaft position (CKP) sensor used for engine speed reference B. Vehicle Speed Sensors (VSS) used for a vehicle speed reference C. Wheel Speed Sensors (WSS) used for individual wheel speeds D. Camshaft Position (CMP) sensor used by the TCM for engine speed - D. Camshaft Positio...

MRSO Safety Exam with Complete Solutions Slew rate - Answer-Speed at which gradient coil turns on and off Time-varying Gradient - Answer-Induced current in a patient Magnetic Flux Lines - Answer-Travel from North to South pole permanent magnet - Answer-Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector Resistive magnet - Answer-Can be turned on and off Costly due to cooling Approximately 0.6T Vertical or horizontal vector Supercond...

________________________________________ IEC Year 2 Semester 2 Questions And Answers Graded A+. In a 60 Hertz system, the voltage will go to "0" ___ times per second? - correct answer. D. 120 What type of magnet is used for the coil in a relay? - correct answer. C. electromagnet ___ flow equals current flow. - correct answer. C. Electron ______ law states "charged bodies attract or repel each other with a force that is directly proportional to the product of t...

In terms of a computer, what do the following acronyms stand for: CRT LED LCD ROM RAM - ANS CRT: cathode ray tube LED: liquid emitting diode LCD: liquid crystal display ROM: read only memory (permanent, can't write over) RAM: random access memory (temporary, lost when computer turns off) What is used for MRI magnet shielding? What is used for MRI radiofrequency shielding? - ANS -steel plates -metal mesh (Faraday cage) What strength of MRI has been shown to have n...

TSA: Electrical Applications Questions and Answers Already Passed What are the pins of a transistor called? Base, Collector, and Emitter A automatic switch that is similar to a fuse in purpose, but can be used multiple times. Circuit Breaker A material through which charges can easily flow. Conductor A negatively charged particle found in atoms that is a carrier of electricity. Electron The process used in modern nuclear power plants. Fission A safety device with a thin metal strip that wil...

. If the draft through an appliance is too high, what adjustment should be made. - • Adjust the barometric damper to more of a closed position . One advantage to lightweight combustion chambers is they: - cool down quickly . What is the temperature range of combustion with a new burner and boiler or furnace combination - •d. 450° to 500°F . When testing an ignition transformer using the arc test method , the arc should be a minimum of: - 1/4" 101. The function of the barometric dra...