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The energy band gap of germanium is 0.72 eV at 300 K. the fraction of the total number of electrons ( conduction and valence band ) in the conduction band at 300 K
a toroidal maganitic core is wrapped with a coil of wire containing 200 turns. the cross sectional area of the core is 10 cmsq,and the mean length around the core is 20 cm. the material permability is 0.001 hy/m. what is the inductance of the devi..
What is the purpose of system calls and how do system calls relate to the Operating system and to the concept of dual-mode operation
A constant current I flows in the loop. Use the Biot-Savart Law to calculate the H -field along the z-axis.
Design an amplifier capable of providing the specified gain over a frequency range of 20 Hz to 10Khz under the following conditions. Input source is 2700ohms resistive, and the output load impedance is 32ohms resistive.
If the self-imaging planes are 1 cm apart, what is the transverse periodicity of the object. Assume the wavelength of illumination as 1 micron. find the locations of the planes where one can observe contrast reversal.
Interfacing a Transducer to an Analog-to-Digital converter
The electrostatic potential in space is given by the scalar field V(r)=V(x,y,z)=e^y + (3x)^2-4cos(z) Find the potential difference between the points P(1,1,1) and Q(0,0,0).
For a maximum positive envelope voltage +12 V and a minimum positive envelope amplitude of +4V, determine the modulation coefficient and percent voltage.
An audio signal s(t) generated by a loudspeaker is reflectedat two different walls with reflection coefficientsr1 and r2. The signal x(t)recorded by a microphone close to the loudspeaker, after sampling,is: x(n) = s(n) + r1s(n-k1) +r2s(n-k2)
A 3 Phase synchronous generator produces an open circuit line voltage of 5196V when the DC exciting current is 50 A. The AC terminals are then short circuited and the three line currents are found to be 500 A.
The simple inexpensive hydro turbo-generator (turbine mated with electric generator) that you intend to buy has a working efficiency of 60%. Answer the following (show your work).
A 150 MVA, 24 kV, 125% three-phase synchronous generator supplies a large network. The network voltage is 27 kV. The generator operates with an induced voltage, which is twice the rated line-to-neutral voltage.
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