control of air flow rate of single phase induction motor for
... The base speed of the motor is proportional to supply frequency and is inversely proportional to the number of poles. So, by changing the supply frequency; the motor speed can be changed. Above base speed, this ratio will decrease when constant voltage (usually motor rated voltage) is applied to the ...
... The base speed of the motor is proportional to supply frequency and is inversely proportional to the number of poles. So, by changing the supply frequency; the motor speed can be changed. Above base speed, this ratio will decrease when constant voltage (usually motor rated voltage) is applied to the ...
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 ...
Reversible Current Power Supply for Fast-Field
... inducing very quick transitions of the current level in the magnet. There are, however, some perturbations, such as parasitic currents, that interfere with the process, and accuracy of magnetic field variation. It was developed, in this work, the project for a power source of a relaxometer, which ma ...
... inducing very quick transitions of the current level in the magnet. There are, however, some perturbations, such as parasitic currents, that interfere with the process, and accuracy of magnetic field variation. It was developed, in this work, the project for a power source of a relaxometer, which ma ...
Advanced Iron-Loss Estimation for Nonlinear Material Behavior
... The loss estimations of both loss-models (4) and (6) using these parameters for three frequencies of 500 Hz, 1000 Hz and 5000 Hz are shown in Figs. 2, Fig. 3 and Fig. 4. The improved loss prediction by the 4-parameter-formula (6) within the parameter identification range is obvious. For loss estimat ...
... The loss estimations of both loss-models (4) and (6) using these parameters for three frequencies of 500 Hz, 1000 Hz and 5000 Hz are shown in Figs. 2, Fig. 3 and Fig. 4. The improved loss prediction by the 4-parameter-formula (6) within the parameter identification range is obvious. For loss estimat ...
Chapter 3 Experimental apparatus and methods - UvA-DARE
... Reproduciblee experiments with a Bose-Einstein condensate require control over a sequencee of 250 operations separated by precise time intervals varying from 1 fis to several seconds.. For this purpose a real-time automation hard- and software system was developed.. It manages the control and allows ...
... Reproduciblee experiments with a Bose-Einstein condensate require control over a sequencee of 250 operations separated by precise time intervals varying from 1 fis to several seconds.. For this purpose a real-time automation hard- and software system was developed.. It manages the control and allows ...
1.1 Magnetic Field Modeling 1.1.1 Magnetic Field Around a Current
... which would look like two stand-alone inductors if the second terms were removed (i.e. mutual inductance M vanished). When present, however, the second mutual inductance allows current I2 to excite additional voltage on port 1 and current I1 to excite additional voltage on port 2 consistent with Far ...
... which would look like two stand-alone inductors if the second terms were removed (i.e. mutual inductance M vanished). When present, however, the second mutual inductance allows current I2 to excite additional voltage on port 1 and current I1 to excite additional voltage on port 2 consistent with Far ...
Eddy Current Losses in Transformer Windings and Circuit
... internal inductance L; accounts for the magnetic energy distributed through the cylindrical sections. The energy stored in each section depends on the cumulative current flowing through the elements to the right of that section in the equivalent circuit. Note that external inductance Lx of the wire ...
... internal inductance L; accounts for the magnetic energy distributed through the cylindrical sections. The energy stored in each section depends on the cumulative current flowing through the elements to the right of that section in the equivalent circuit. Note that external inductance Lx of the wire ...
Dipoles
... single loop of wire with some constant current flowing through it.[1][2] Dipoles can be characterized by their dipole moment, a vector quantity. For the simple electric dipole given above, the electric dipole moment would point from the negative charge towards the positive charge, and have a magnitu ...
... single loop of wire with some constant current flowing through it.[1][2] Dipoles can be characterized by their dipole moment, a vector quantity. For the simple electric dipole given above, the electric dipole moment would point from the negative charge towards the positive charge, and have a magnitu ...
Primary Coil or Primary Winding
... 1. There are 400 turns of wire in an ironcore coil. If this coil is to be used as the primary of a transformer, how many turns must be wound on the coil to form the secondary winding of the transformer to have a secondary voltage of one volt if the primary voltage is five volts? 2. A 12 volts transf ...
... 1. There are 400 turns of wire in an ironcore coil. If this coil is to be used as the primary of a transformer, how many turns must be wound on the coil to form the secondary winding of the transformer to have a secondary voltage of one volt if the primary voltage is five volts? 2. A 12 volts transf ...
