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The magnetic circuit of Fig. P.2.14 has a magnetic core of relative permeability 1600 and is wound with a coil of 1500 turns excited with sinusoidal ac voltage, as shown. Calculate the maximum flux density of the core and the peak value of the exciting current. What is the peak value of the energy stored in the magnetic system and what percentage of it resides in the air-gap?
Draw the capability curve of the synchronous machine, which has following equivalent circuit parameters and limiting conditions, in the first quadrant of the torque-speed plane.
If a single-loop circuit consists of an ideal 15-V dc source VS, a variable resistor R and the described Zener diode, find the range of values of R for which Zener diode remains in constant reverse breakdown with no danger of failure.
The Arrhenius equation is used to explain the dependance of the reaction rate coefficient, k, on temperature, T. Linearize the Arrhenius equation for the the temperature dependance of chemical reaction rate coefficients.
Use Property Rights Theory to explain why stockbrokers are permitted to keep their client lists (i.e., continue to contact and do business with clients) if they are dismissed from their jobs and find employment at another brokerage house.
Two inductors with two separate cores are used in parallel in a circuit to share the current. A customer request a design improve by putting the two windings on to the same core. 1. Draw the two windings and resulting magnetic field; 2. If 10 turns..
the donor energy level is approximately 0.1 ev below the conduction band. the approximate value is calculated from the binding energy equation from hydrogen. derive the binding or ionization energy which is equal to the total energy.
determine the position of fermi level with respect to the valence level. What type of dopant and how much additional quantity that you have to add to this crystal to move the fermi level by (an energy amount of) KT toward the valence band
State the four groups of address lines that enable the microcontroller to communicate with the other devices in a typical computer based data acquisition system.
Determine the periods and find exponential fourier series coeffecients of functions. A.) f(t) = 2(cost)(cos2t) B.) g(t) = 3 + 2e^-j2t + 2e^j2t + 2cos4t C.) h(t) = 4
1- What is the magnitude of the impedance of a capacitor of 29 F at an angular frequency of 644 rad/s (1 decimals in ) 2- What is the phase angle of the impedance of a capacitor of 40 F
Explain why AC Needs More Insulation Than DC for the Same Working Voltage Level?
A serial transmission is set up for 8 bits with odd parity. The first two bytes of data are 01110111 with parity bit 1 and 01101010 with parity bit 0. From this we know that there are no errors in transmission.
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