An introduction to electric motors
... By applying three sinusoidal voltages with a delay of 120° in the motor phases it is possible to obtain three sinusoidal currents generating a rotating magnetic field. This method, named sinusoidal driving, allows a smoother operation compared to the 6-step method. Applying a sinusoidal voltage to e ...
... By applying three sinusoidal voltages with a delay of 120° in the motor phases it is possible to obtain three sinusoidal currents generating a rotating magnetic field. This method, named sinusoidal driving, allows a smoother operation compared to the 6-step method. Applying a sinusoidal voltage to e ...
Student Material
... Charging by Induction A conducting object can be charged by induction by bringing another charged object close to it. The gold leaf electroscope has a conducting cap connected to a central metal rod and a thin gold leaf which is able to move. (The electroscope is in effect a voltmeter - it measures ...
... Charging by Induction A conducting object can be charged by induction by bringing another charged object close to it. The gold leaf electroscope has a conducting cap connected to a central metal rod and a thin gold leaf which is able to move. (The electroscope is in effect a voltmeter - it measures ...
Quantum critical point and spin fluctuations in the lower
... the HS paramagnetic and antiferromagnetic phases at 0-50 GPa, and the LS diamagnetic phase above 56 GPa. The pressure-dependent Néel temperatures (the dash blue line in Fig. 4) in the region 0 < P < 50 GPa separate the magnetically-ordered and paramagnetic HS states of (Mg0.75,Fe0.25)O. The TN value ...
... the HS paramagnetic and antiferromagnetic phases at 0-50 GPa, and the LS diamagnetic phase above 56 GPa. The pressure-dependent Néel temperatures (the dash blue line in Fig. 4) in the region 0 < P < 50 GPa separate the magnetically-ordered and paramagnetic HS states of (Mg0.75,Fe0.25)O. The TN value ...
Nonlinear waves and shocks in relativistic two-fluid hydrodynamics
... collisionless shocks which are expected to form in a number of astrophysical objects dominated by relativistic plasmas. We study stationary one-dimensional nonlinear waves propagating in the direction perpendicular to the external magnetic field, within the two-fluid approach. The research covers th ...
... collisionless shocks which are expected to form in a number of astrophysical objects dominated by relativistic plasmas. We study stationary one-dimensional nonlinear waves propagating in the direction perpendicular to the external magnetic field, within the two-fluid approach. The research covers th ...
Powerpoint
... steadily decreases in voltage from 12 V to 0 V in 0.5 s, then remains at 0 V for t > 0.5 s. The inner coil of wire is 1 cm long, 1 cm in diameter, has 10 turns of wire, and has a total resistance of 0.01 Ω. It is connected, as shown, to a current meter. a. As the voltage to the outer coil begins to ...
... steadily decreases in voltage from 12 V to 0 V in 0.5 s, then remains at 0 V for t > 0.5 s. The inner coil of wire is 1 cm long, 1 cm in diameter, has 10 turns of wire, and has a total resistance of 0.01 Ω. It is connected, as shown, to a current meter. a. As the voltage to the outer coil begins to ...
Regular and chaotic motion of anti-protons through a
... less than that of the e+ ’s; thus, we have not included the electric fields from the p̄ space charge. Because the plasma is small, the dominant magnetic field in the e+ plasma is the uniform magnetic field along the axis. The e+ plasma has nearly uniform density throughout. The electric potential wi ...
... less than that of the e+ ’s; thus, we have not included the electric fields from the p̄ space charge. Because the plasma is small, the dominant magnetic field in the e+ plasma is the uniform magnetic field along the axis. The e+ plasma has nearly uniform density throughout. The electric potential wi ...
Simple Analytical Expressions for the Force and Torque of Axial
... the torque could be transmitted across a separation wall, axial field magnetic couplings are well suited for use in isolated systems such as vacuum or high pressure vessels. Moreover, they present a maximum transmissible torque (pull-out torque) giving an intrinsic overload protection. Axial magneti ...
... the torque could be transmitted across a separation wall, axial field magnetic couplings are well suited for use in isolated systems such as vacuum or high pressure vessels. Moreover, they present a maximum transmissible torque (pull-out torque) giving an intrinsic overload protection. Axial magneti ...
Chapter5_Final.doc
... The term ( t 1 z ) or (t z v1 ) emphasizes the coupling between the location as a function of time of a specific point (constant phase) propagating along the wave. It also indicates with an increase in t, z should also increase in order to maintain a constant value of (t –z/v1), and it char ...
... The term ( t 1 z ) or (t z v1 ) emphasizes the coupling between the location as a function of time of a specific point (constant phase) propagating along the wave. It also indicates with an increase in t, z should also increase in order to maintain a constant value of (t –z/v1), and it char ...
Electromagnet
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.Electromagnets are widely used as components of other electrical devices, such as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment. Electromagnets are also employed in industry for picking up and moving heavy iron objects such as scrap iron and steel.