t6_motors
... An electric motor is an electromechanical device that converts electrical energy to mechanical energy. The mechanical energy can be used to perform work such as rotating a pump impeller, fan, blower, driving a compressor, lifting materials etc. It is estimated that about 70% of the total electrical ...
... An electric motor is an electromechanical device that converts electrical energy to mechanical energy. The mechanical energy can be used to perform work such as rotating a pump impeller, fan, blower, driving a compressor, lifting materials etc. It is estimated that about 70% of the total electrical ...
a) In the model with the smaller number of electric field lines. b) In
... Wanda creates an electric field line model of the electric field due to a positive point charge. Larry argues that one can’t associate an amount of flux with each field line because if you enclose the point charge with a sphere centered on the point charge, all points on the surface of a smaller fi ...
... Wanda creates an electric field line model of the electric field due to a positive point charge. Larry argues that one can’t associate an amount of flux with each field line because if you enclose the point charge with a sphere centered on the point charge, all points on the surface of a smaller fi ...
Chapter 31
... the contacts to the rotating loop are made using a split ring called a commutator Use the active figure to vary the speed of rotation and observe the effect on the emf generated ...
... the contacts to the rotating loop are made using a split ring called a commutator Use the active figure to vary the speed of rotation and observe the effect on the emf generated ...
Magnetize
... A wet cell contains two connected plates made of different metals or metal compounds in a conducting solution. Most car batteries have a series of six cells, each containing lead and lead oxide in a sulfuric acid solution. ...
... A wet cell contains two connected plates made of different metals or metal compounds in a conducting solution. Most car batteries have a series of six cells, each containing lead and lead oxide in a sulfuric acid solution. ...
Assignment-21 Conduction Phenomenon is
... 1. (a) Using the above mentioned formula, calculate the concentration of atoms in Germanium, taking monatomic germanium. (v = 1) (b) Find the resistivity of intrinsic germanium at 300o K. (c) If a donor-type impurity is added to the extent of 1 part in 108 germanium atoms, find the resistivity. (d) ...
... 1. (a) Using the above mentioned formula, calculate the concentration of atoms in Germanium, taking monatomic germanium. (v = 1) (b) Find the resistivity of intrinsic germanium at 300o K. (c) If a donor-type impurity is added to the extent of 1 part in 108 germanium atoms, find the resistivity. (d) ...
Weak ferromagnetism and magnetoelectric coupling in
... system. Indeed, if we start our calculation with a spin configuration in which the magnetic moments are canted in the wrong direction 共so that D, L, and M make up a left-handed system兲 the moments relax back into the right-handed configuration during the iteration process. Therefore, for a particula ...
... system. Indeed, if we start our calculation with a spin configuration in which the magnetic moments are canted in the wrong direction 共so that D, L, and M make up a left-handed system兲 the moments relax back into the right-handed configuration during the iteration process. Therefore, for a particula ...
ELECTROMAGNETISM PREVIOUS EAMCET BITS Engineering paper
... galvanometer is G, the shunt resistance ‘S’ connected to the galvanometer is (EAMCET 2008 E) ...
... galvanometer is G, the shunt resistance ‘S’ connected to the galvanometer is (EAMCET 2008 E) ...
how maglev trains operate
... the train above the guideway. However, the magnetic field in this case is not entirely coming from permanent magnets, but it is created by electric current that is induced through the train and guideway. It creates temporary magnetic force and temporary magnetic poles. Also, Maglev uses the principl ...
... the train above the guideway. However, the magnetic field in this case is not entirely coming from permanent magnets, but it is created by electric current that is induced through the train and guideway. It creates temporary magnetic force and temporary magnetic poles. Also, Maglev uses the principl ...
The Ionosphere
... cosmic ray ions with atoms of the atmosphere. Further out is the large region of the ring current, containing ions and electrons of much lower energy (the most energetic among them also known as the "outer radiation belt"). Unlike the inner belt, this population fluctuates widely, rising when magnet ...
... cosmic ray ions with atoms of the atmosphere. Further out is the large region of the ring current, containing ions and electrons of much lower energy (the most energetic among them also known as the "outer radiation belt"). Unlike the inner belt, this population fluctuates widely, rising when magnet ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.