10.3 The ideal transformer
... ① Used for changing AC voltage levels. ② Transmission line : high voltage levels are used to decrease power loss due to ...
... ① Used for changing AC voltage levels. ② Transmission line : high voltage levels are used to decrease power loss due to ...
introduction - KFUPM Faculty List
... If an armature revolves between two stationary field poles, the current in the armature moves in one direction during half of each revolution and in the other direction during the other half. To produce a steady flow of unidirectional, or direct, current from such a device, it is necessary to provid ...
... If an armature revolves between two stationary field poles, the current in the armature moves in one direction during half of each revolution and in the other direction during the other half. To produce a steady flow of unidirectional, or direct, current from such a device, it is necessary to provid ...
Transformers and Electromagnetic Waves Practice Problems
... 3. Which coil, primary or secondary, has more windings in a step-up transformer? Explain. [A step up transformer has a higher voltage output from the secondary coil than is input to the primary coil.] 4. In an ideal transformer, how does the power put out by the secondary coil depend on the power pu ...
... 3. Which coil, primary or secondary, has more windings in a step-up transformer? Explain. [A step up transformer has a higher voltage output from the secondary coil than is input to the primary coil.] 4. In an ideal transformer, how does the power put out by the secondary coil depend on the power pu ...
Use this Jeopardy game to study for the Electricity
... The amount of work done in a period of time ...
... The amount of work done in a period of time ...
UNIVERSITIES OF MANCHESTER LIVERPOOL LEEDS
... voltaic cell. The e.m.f. of the cell is balanced by the fall of potential along 90.6 cm. of wire. When a standard resistance of 100 ohm is connected across the cell the balance length is found to be 75.5 cm. Draw a labelled circuit diagram and calculate, from first principles, the internal resistanc ...
... voltaic cell. The e.m.f. of the cell is balanced by the fall of potential along 90.6 cm. of wire. When a standard resistance of 100 ohm is connected across the cell the balance length is found to be 75.5 cm. Draw a labelled circuit diagram and calculate, from first principles, the internal resistanc ...
Cathode Rays
... Heating the cathode causes it to emit low energy electrons. This effect, called thermionic emission, was first studied extensively by Thomas Edison. The electrons emitted by the cathode are accelerated to a high velocity by the electric field between the cathode and the anode. The anode has a small ...
... Heating the cathode causes it to emit low energy electrons. This effect, called thermionic emission, was first studied extensively by Thomas Edison. The electrons emitted by the cathode are accelerated to a high velocity by the electric field between the cathode and the anode. The anode has a small ...
structure of the program
... The results are automatically stored in corresponding files. But, at request, they may be exported to Excel or Matlab for further numerical processing. Moreover, they can be printed (in common with various input data) into special sheets (for the purpose of Internet handling, presentations etc.). Th ...
... The results are automatically stored in corresponding files. But, at request, they may be exported to Excel or Matlab for further numerical processing. Moreover, they can be printed (in common with various input data) into special sheets (for the purpose of Internet handling, presentations etc.). Th ...
99 Series - Coil indication and EMC suppression
... relays coils can be suppressed with a Diode, a Varistor (voltage dependent resistor) or a RC (resistor/capacitor) module – dependent on the operating voltage. (See below for descriptions of the various Modules available.) Whilst the above description is based on the working of a DC coil, the reverse ...
... relays coils can be suppressed with a Diode, a Varistor (voltage dependent resistor) or a RC (resistor/capacitor) module – dependent on the operating voltage. (See below for descriptions of the various Modules available.) Whilst the above description is based on the working of a DC coil, the reverse ...
Electromagnetic Induction
... of voltage induction in a conductor placed in the magnetic field. • The generation of emf due to Electromagnetic Induction was first obtain by the English scientist Michael Faraday in 1831. ...
... of voltage induction in a conductor placed in the magnetic field. • The generation of emf due to Electromagnetic Induction was first obtain by the English scientist Michael Faraday in 1831. ...
Capacitive element based sensor
... shown in Figure 2.2.7, say, more in secondary coil 1 than in coil 2, then more emf is generated in one coil i.e. coil 1 than the other, and there is a resultant voltage from the coils. If the magnetic core is further displaced, then the value of resultant voltage increases in proportion with the dis ...
... shown in Figure 2.2.7, say, more in secondary coil 1 than in coil 2, then more emf is generated in one coil i.e. coil 1 than the other, and there is a resultant voltage from the coils. If the magnetic core is further displaced, then the value of resultant voltage increases in proportion with the dis ...
Spintronics Integrating magnetic materials with semiconductors
... Magnetic field Current L distance Magnetic force Area · (magnetic field)2 L4 Magnetic forces are much weaker compared to electrostatic forces Magnetic energy Volume · (Magnetic field)2 L5 ...
... Magnetic field Current L distance Magnetic force Area · (magnetic field)2 L4 Magnetic forces are much weaker compared to electrostatic forces Magnetic energy Volume · (Magnetic field)2 L5 ...
Coilgun
A coilgun (or Gauss rifle, in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators) is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils. The coils are switched on and off in a precisely timed sequence, causing the projectile to be accelerated quickly along the barrel via magnetic forces. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. Whilst some simple coilgun concepts can use ferromagnetic projectiles or even permanent magnet projectiles, most designs for high velocities actually incorporate a coupled coil as part of the projectile.