Discussion 10
... energy from one circuit to another through magnetic coupling. A changing current in the first coil (the primary ) creates a changing magnetic field; in turn, this magnetic field induces a changing voltage in the second coil (the secondary). Discussion: - The secondary induced voltage V2 is scaled fr ...
... energy from one circuit to another through magnetic coupling. A changing current in the first coil (the primary ) creates a changing magnetic field; in turn, this magnetic field induces a changing voltage in the second coil (the secondary). Discussion: - The secondary induced voltage V2 is scaled fr ...
Weston 4 Interim Relay Requirements
... reactive power consumption, loss of capacitors and SVCs due to protection operation or misoperation, and tripping generators due to negative sequence harmonics reduce the capability of the network to maintain voltage stability. The 1989 Hydro Quebec GMD related outage was due to voltage collapse cau ...
... reactive power consumption, loss of capacitors and SVCs due to protection operation or misoperation, and tripping generators due to negative sequence harmonics reduce the capability of the network to maintain voltage stability. The 1989 Hydro Quebec GMD related outage was due to voltage collapse cau ...
Magnetic effect of electic current
... wire will give the direction of the produced magnetic field lines around the wire. Corkscrew rule If one drives a corkscrew in the direction of the current, then the direction in which the handle is turned is the direction of the magnetic field on the magnetic field lines. ...
... wire will give the direction of the produced magnetic field lines around the wire. Corkscrew rule If one drives a corkscrew in the direction of the current, then the direction in which the handle is turned is the direction of the magnetic field on the magnetic field lines. ...
P6E
... DC electric motors A force can act on a wire carrying an electric current when it is in a magnetic field. This does not happen if the wire is parallel to the magnetic field, but it does happen when the wire is at right angles to the magnetic field. The direction the wire moves depends on the directi ...
... DC electric motors A force can act on a wire carrying an electric current when it is in a magnetic field. This does not happen if the wire is parallel to the magnetic field, but it does happen when the wire is at right angles to the magnetic field. The direction the wire moves depends on the directi ...
Electromagnetic Induction5
... a) The force on it is zero b) The torque on it is mxB c) Its potential energy is − . mB where we choose the zero of energy at the orientation when m is perpendicular to B . • Consider a bar magnet of size l and magnetic moment m , at a distance r from its mid – point, where r >> l, the magnetic fiel ...
... a) The force on it is zero b) The torque on it is mxB c) Its potential energy is − . mB where we choose the zero of energy at the orientation when m is perpendicular to B . • Consider a bar magnet of size l and magnetic moment m , at a distance r from its mid – point, where r >> l, the magnetic fiel ...
Ferro-fluid
... making the surfactant less viscous, so that the iron particles can move more easily Why add acetone? Acetone is an extremely light weight fluid – it evaporates very quickly for this same reason (girls will have noticed this if they ever used it to clean off nail polish – it dries much faster than wa ...
... making the surfactant less viscous, so that the iron particles can move more easily Why add acetone? Acetone is an extremely light weight fluid – it evaporates very quickly for this same reason (girls will have noticed this if they ever used it to clean off nail polish – it dries much faster than wa ...
The Sun: Our Star
... radiates X-ray, ultraviolet, and visible radiation, plus streams of high-energy protons and electrons. Solar Flares originate in/near Sun spots and juts into the chromosphere. A large flare can be a billion times more energetic than a large hydrogen bomb. ...
... radiates X-ray, ultraviolet, and visible radiation, plus streams of high-energy protons and electrons. Solar Flares originate in/near Sun spots and juts into the chromosphere. A large flare can be a billion times more energetic than a large hydrogen bomb. ...
Sun: Solar Activities -- Flares, CMEs
... τd: the time scale the magnetic field in size L dissipates away, σ electric conductivity, η magnetic diffusivity, L the magnetic field scale size •In normal coronal condition, τd ~ 1014 s, or 1 million year (assuming L=109 cm, T=106 K, and σ =107T3/2 s-1) •To reduce τd, reduce L to an extremely thin ...
... τd: the time scale the magnetic field in size L dissipates away, σ electric conductivity, η magnetic diffusivity, L the magnetic field scale size •In normal coronal condition, τd ~ 1014 s, or 1 million year (assuming L=109 cm, T=106 K, and σ =107T3/2 s-1) •To reduce τd, reduce L to an extremely thin ...
Sea-Floor spreading
... • The deepest ocean depth to be sounded is Mariana Trench at a depth of 10,911 m (35,798 ft) below sea level. (higher than Mt. Everest) ...
... • The deepest ocean depth to be sounded is Mariana Trench at a depth of 10,911 m (35,798 ft) below sea level. (higher than Mt. Everest) ...
DIY Solar System
... Some of these objects are referred to as dwarf planets and include Pluto, Eris, Haumea, Makemake and Ceres. There are also small-body populations including comets and interplanetary dust. You can find other information in books (possibly updated) or websites (e.g. http://en.wikipedia.org/wiki/Solar_ ...
... Some of these objects are referred to as dwarf planets and include Pluto, Eris, Haumea, Makemake and Ceres. There are also small-body populations including comets and interplanetary dust. You can find other information in books (possibly updated) or websites (e.g. http://en.wikipedia.org/wiki/Solar_ ...
Chapter 17- Section 1 Magnets and Magnetic Fields
... o When magnets ________ or __________each other, it is due to the interaction of their _____. o A ______________ is a region where a magnetic force can be detected. Magnetic field lines are used to represent a _________________________. The magnetic field gets weaker with _______________ from th ...
... o When magnets ________ or __________each other, it is due to the interaction of their _____. o A ______________ is a region where a magnetic force can be detected. Magnetic field lines are used to represent a _________________________. The magnetic field gets weaker with _______________ from th ...
55_1.pdf
... pictures represent those individual structures that have the largest density gradients. The corona is actually filled with many more structures that are not seen in the images, either because they are smaller than the spatial resolution or because their density gradients are weak. Highly sensitive a ...
... pictures represent those individual structures that have the largest density gradients. The corona is actually filled with many more structures that are not seen in the images, either because they are smaller than the spatial resolution or because their density gradients are weak. Highly sensitive a ...
Trefoil Formation refers to a method of arranging cables. The trefoil
... are carried by individual cables rather than a single three phase cable. ...
... are carried by individual cables rather than a single three phase cable. ...
analysis of the required force-modelling for navstar / gps satellites
... caused by earth, moon, sun and planets together with the non-gravitational forces like solar radiation pressure and air drag are discussed in detail. ...
... caused by earth, moon, sun and planets together with the non-gravitational forces like solar radiation pressure and air drag are discussed in detail. ...
Chapter 11: Thermochemistry
... that force will change with a change in distance, but they differ in that while a proton and an electron can be isolated in an electric current, you cannot isolate the north and south pole of a magnet because they are created by the spin of the electrons within the atom. ...
... that force will change with a change in distance, but they differ in that while a proton and an electron can be isolated in an electric current, you cannot isolate the north and south pole of a magnet because they are created by the spin of the electrons within the atom. ...
Geomagnetic storm
A geomagnetic storm is a temporary disturbance of the Earth's magnetosphere caused by a solar wind shock wave and/or cloud of magnetic field that interacts with the Earth's magnetic field. The increase in the solar wind pressure initially compresses the magnetosphere. The solar wind's magnetic field interacts with the Earth’s magnetic field and transfers an increased energy into the magnetosphere. Both interactions cause an increase in plasma movement through the magnetosphere (driven by increased electric fields inside the magnetosphere) and an increase in electric current in the magnetosphere and ionosphere.During the main phase of a geomagnetic storm, electric current in the magnetosphere creates a magnetic force that pushes out the boundary between the magnetosphere and the solar wind. The disturbance in the interplanetary medium that drives the storm may be due to a solar coronal mass ejection (CME) or a high speed stream (co-rotating interaction region or CIR) of the solar wind originating from a region of weak magnetic field on the Sun’s surface. The frequency of geomagnetic storms increases and decreases with the sunspot cycle. CME driven storms are more common during the maximum of the solar cycle, while CIR driven storms are more common during the minimum of the solar cycle.Several space weather phenomena tend to be associated with or are caused by a geomagnetic storm. These include: solar energetic Particle (SEP) events, geomagnetically induced currents (GIC), ionospheric disturbances that cause radio and radar scintillation, disruption of navigation by magnetic compass and auroral displays at much lower latitudes than normal. In 1989, a geomagnetic storm energized ground induced currents that disrupted electric power distribution throughout most of the province of Quebec and caused aurorae as far south as Texas.