Magnetic fields

The study of free convection flow and heat transfer under the influence of inclined magnetic field has received considerable interest due to its wide application in geophysics, astrophysics and various engineering and industrial processes such as thermal insulation, drying of porous solid materials, manufacturing of ceramic, heat exchanges, stream pipes, water heaters, electrical conductors , enhanced oil recovery, polymer production, packed-bed catalytic reactors, food processing, cooling of nuclear

with CuO3 and then provide additional electron density. YBCO is a common element studied for synthesizing Superconductor. The YBCO in bulk form can lift a small magnet when immersed in nitrogen liquid. This is caused by the repulsion of the YBCO magnetic field. This phenomenon is called Meisner Effect. YBCO is a critical temperature and single grain superconductors

specific energy because the cathode is provided by the surrounding oxygen in the air. One definite application of electromagnetic technology relates to a form of transportation that might appear to be old news at first, which is trains. However, magnetic levitation trains are as far removed from the old stream engines of the Union Pacific as the space shuttle is from the Wright brothers’ experimental airplane. Those type of engines most likely laid the ground work for the other engines even though

This paper presents the details of a recent study on the removal of the screening-current-induced field (SCIF) in a pancake-type noninsulated high-temperature superconductor (HTS) coil (NI coil). To determine the SCIF in the NI coil, the magnetic flux density (Bz) was calculated using the equivalent circuit model of the coil and compared to Bz obtained empirically. The experimental results exhibited that the SCIF elimination in the NI coil enhanced upon increasing the amplitude and frequency of the

the trapezoidal type goes under the name of PM Brushless dc (BLDC) machine. Table (2.1) shows the difference between (PMSM) and (BLDC) motor. Permanent magnet (PM) DC brushed and brushless motors incorporate a combination of PM and electromagnetic fields to produce torque (or force) resulting in motion. This is done in the DC motor by a PM stator and a wound armature or rotor. Current in the DC motor is automatically switched to different windings by means of a commutator and brushes to create continuous

Pickups convert the mechanical energy of the vibrating strings into electrical energy through electromagnetic induction. The permanent magnet of the pickup creates a steady magnetic field that changes as the strings vibrate. The coil wrapped within the magnetic field is induced with a current and voltage as said magnetic field alternates due to the vibrating strings. The output is an alternating current since the voltage alternates between positive and energy as the

REMARKS/ ANALYSIS In the 1st part of the experiment, Magnetics fields of Magnets with different orientations were observed. For its first subpart A. Like poles of bar Magnets, the magnetic fields are attracted to their opposite poles, thus it is shown that the magnets repel each other. For the next subpart B. Unlike poles of bar Magnets. The magnetic field lines of the North-pole is attracted to the South-pole. This is why in the figure, it can be seen that the two magnets are seeking each other

its operation. Finally, a few of the arduous problems as well as what impact the railgun might have in our future is explained. I. Introduction By definition, a railgun is “a weapon consisting of a pair of parallel conductive rails, using a magnetic field and electric current to launch projectiles at very high velocity” (1). In other words, a railgun is an physical apparatus that uses the basic laws of electromagnetics by taking the flow of current through a loop to generate a Lorentz force on

like ones repel. 2. Magnetic poles (or states of polarization at individual points) attract or repel one another in a

3. DATA AND METHODOLOGY 3.1. Magnetic Data The used data are based on the reduced to pole (RTP) aeromagnetic data (Fig. 2) with contour interval of 20 nT, scale 1:250,000 (total field of the area is 41,400 nT, inclination angle is 37.4 degrees and declination angle is +1.6 degrees). The magnetic data was compiled for the Eastern Desert and the Red Sea, based on Meshref (1990) and available in Saad (1991). The Union Oil Company carried out this survey in 1974. Fig. (2): 3.2. Determination of the