Teacher`s Guide
... commutator: The rotating switch attached to the brushes of a DC generator. The commutator maintains DC when the rotation of the armature switches the polarity of the conductor. DC generator: Device that produces direct current. dynamic energy: Energy generated by a specific physical force. For examp ...
... commutator: The rotating switch attached to the brushes of a DC generator. The commutator maintains DC when the rotation of the armature switches the polarity of the conductor. DC generator: Device that produces direct current. dynamic energy: Energy generated by a specific physical force. For examp ...
Electromagnetic Induction
... by the generator depends on the magnetic induction, B, the length of wire rotating in the field, L, and v, the speed of the loops perpendicular to the magnetic field. Increasing the number of loops in the armature increases the wire length, L, increasing the induced EMF. When a generator is connecte ...
... by the generator depends on the magnetic induction, B, the length of wire rotating in the field, L, and v, the speed of the loops perpendicular to the magnetic field. Increasing the number of loops in the armature increases the wire length, L, increasing the induced EMF. When a generator is connecte ...
Chapter 1: Overview of Mechatronics Systems Engineering
... normal operation of the device. No slow, random recombination of N- and P- type carriers is involved, so this diode can cease conduction faster than an ordinary PN rectifier diode. This property in turn allows a smaller device area, which also makes for a faster transition. Therefore broad-area Scho ...
... normal operation of the device. No slow, random recombination of N- and P- type carriers is involved, so this diode can cease conduction faster than an ordinary PN rectifier diode. This property in turn allows a smaller device area, which also makes for a faster transition. Therefore broad-area Scho ...
Modeling of induced current into the human body by low
... low-frequency (up to 1 MHz) electromagnetic fields is the generation of induced currents inside the human body [1]. While the short-term effects of this exposure are well known, there is no convincing evidence of (possibly hazardous) long-term effects of the electromagnetic fields on the human health ...
... low-frequency (up to 1 MHz) electromagnetic fields is the generation of induced currents inside the human body [1]. While the short-term effects of this exposure are well known, there is no convincing evidence of (possibly hazardous) long-term effects of the electromagnetic fields on the human health ...
2008 KCSE ELECTRICITY PAPER 1 MS
... Exploded drawing shows the sequence in which all the parts are put together in the final assembly. (2x1=2 marks) ...
... Exploded drawing shows the sequence in which all the parts are put together in the final assembly. (2x1=2 marks) ...
LAB COURSE: 255B Fall 2015
... Cell phone use (of any kind – voice, texting, calculator, photography…) or the use of other personal electronic devices (unless approved by the instructor) is not allowed during the lab. Phones must be rendered inaudible (either turn them off completely or at least set them to silent mode) during th ...
... Cell phone use (of any kind – voice, texting, calculator, photography…) or the use of other personal electronic devices (unless approved by the instructor) is not allowed during the lab. Phones must be rendered inaudible (either turn them off completely or at least set them to silent mode) during th ...
LAB 5 Capacitors
... To measure the voltage across an initially uncharged capacitor, use the following procedure: • Connect a 0.05 µF capacitor to a 10V power supply and charge it up (one or two seconds). Disconnect the power supply from the capacitor and be careful not to touch either side of the capacitor or you will ...
... To measure the voltage across an initially uncharged capacitor, use the following procedure: • Connect a 0.05 µF capacitor to a 10V power supply and charge it up (one or two seconds). Disconnect the power supply from the capacitor and be careful not to touch either side of the capacitor or you will ...
Designing with the DRV421: System Parameter
... not able to deliver enough compensation current, since the total secondary resistance (shunt resistance + comp coil resistance) is too high. The driver will therefore rail. Solution: Reduce the compensation coil size, and/or reduce the shunt resistor size. Compensation Coil Current Overload: Descrip ...
... not able to deliver enough compensation current, since the total secondary resistance (shunt resistance + comp coil resistance) is too high. The driver will therefore rail. Solution: Reduce the compensation coil size, and/or reduce the shunt resistor size. Compensation Coil Current Overload: Descrip ...
Chapter 13
... Electrolytic capacitors are polarized so that one plate is positive, and the other negative. They come in capacitance values from 1F to 200,000 F, with voltage ratings to 350 V. ...
... Electrolytic capacitors are polarized so that one plate is positive, and the other negative. They come in capacitance values from 1F to 200,000 F, with voltage ratings to 350 V. ...
Here we`ll find the initial values of the inductor current and voltage
... Here we’ll find the initial values of the inductor current and voltage, both of their derivatives, and finally the final value of the inductor current and voltage. We have 9 J of stored energy in the capacitor before the switch closes at t = 0. Start by drawing the circuit for t < 0, while the switc ...
... Here we’ll find the initial values of the inductor current and voltage, both of their derivatives, and finally the final value of the inductor current and voltage. We have 9 J of stored energy in the capacitor before the switch closes at t = 0. Start by drawing the circuit for t < 0, while the switc ...
Motor Efficiency and Fault Zone Analysis
... The conduction current in well-bonded polyester and epoxy-mica insulation systems is essentially zero unless the insulation has become saturated with moisture. Older insulation systems, such as asphaltic-mica or shellac mica-folium may have a natural and higher conduction due to the conductivity of ...
... The conduction current in well-bonded polyester and epoxy-mica insulation systems is essentially zero unless the insulation has become saturated with moisture. Older insulation systems, such as asphaltic-mica or shellac mica-folium may have a natural and higher conduction due to the conductivity of ...
Diodes
... Reverse bias the diode with ~-20 V and observe the reverse current (should be about 0.2 µA). Touch a hot soldering iron to the metal lead close to the diode and note the percentage change in reverse current. There is a big effect because the minority carriers that transport the reverse current are t ...
... Reverse bias the diode with ~-20 V and observe the reverse current (should be about 0.2 µA). Touch a hot soldering iron to the metal lead close to the diode and note the percentage change in reverse current. There is a big effect because the minority carriers that transport the reverse current are t ...
PY5021 - 5 Sensor Types (2)
... 4.5.2 Overhauser magnetometer. Electrons have spin S = 1/2 and moments of one Bohr magneton µB = eh/me, about 400 times greater than that of the proton. In an applied field B0 the induced moment 〈m〉/µB is 400 times 〈m〉/µp. But usually, the electron spins are paired up in chemical bonds, so they dp ...
... 4.5.2 Overhauser magnetometer. Electrons have spin S = 1/2 and moments of one Bohr magneton µB = eh/me, about 400 times greater than that of the proton. In an applied field B0 the induced moment 〈m〉/µB is 400 times 〈m〉/µp. But usually, the electron spins are paired up in chemical bonds, so they dp ...
3 Numerical simulations of electromagnetic field
... The initial value problem and two-boundary problem is solved with using numerical method. Corresponding algorithms and computer simulation results are given. The model verification with real object is also included. Regarding field equations in real laminated structure, it allows to simulate core de ...
... The initial value problem and two-boundary problem is solved with using numerical method. Corresponding algorithms and computer simulation results are given. The model verification with real object is also included. Regarding field equations in real laminated structure, it allows to simulate core de ...
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.