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The electromagnetic wave that delivers a cellular phone call to acar has a magnetic field with an rms value of 1.38E-10 T. The wavepasses perpendicularly through an open window, the area of which is
Design a circuit that provides a relationship between output voltage Vo and input voltage Vs such that Vo=12*Vs -10. Two opamps, a 6-V battery, and several resistors are available.
Draw a block diagram that shows the various stages required in a linear (conventional) power supply. Explain the purpose of each stage.
(a) to what voltage would a 60-microfarad capacitor be charged by a6mA current lasting 10 seconds (b) if the bulb when conducting current and emitting light acts asan 0.1-ohm resistor what is the ti
A chopper controlled electric train is powered from a 1500 VDE supply. The power semi- conductor switch element has a minimum effectice ON time of 40 Ms. during starting and slow speed running, the
An AC load circuit consists of a resistance of 30 Ω in sereiswith an inductance of 0.2 H. It is fed from a 120 V, 60 Hz AC source. determine the conduction interval in half cycle for a firing d
A perfect electric dipole is directed along the z-axis. Inconventional spherical polar coordinates, at what values of the"dangle angle" q does the electric field have no z-component
An output pulse of 5μs duration is to be generated by a 74LS122 one-shot. Using a capacitor of 10,000 pF, determine the value of external resistance required.
What is the name given to the process of assigning a specific binary number to an instantaneous value on an analog signal
What is the de Broglie wavelength of an electron at150eV. what is the wavelength for electrons at 10keV, which istypical of electron microscopes. Comparing this to visiblel light,comment on the adva
G=X'Y'Z'+XYZ+XY'Z+X'YZ' A) Simplify this equation using boolean algebra (theorems),show each step please. B) Simplify this equation using a Karnaugh map.
In today's typical Ethernet, the stations are connected to anEthernet switch using twisted pairs. In this case, do we still needCSMA/CD to control the medium access Explain why.
A half-wave rectifier circuit with a 1-Kwload operates from a 12-v(rms) 60-Hz household a 5-to 1 transformer having a center-tappedsecondary winding. It use two silicon diodes that can be modeled to
If it is known that an electric dipole is located at the origin andthat its E-field at the point P(2[m], 30°, 90°) isE=4âθ[V/m],find the magnitude and direction of the dipole mom
If a zener diode has a breakdown voltage of 8[V], find the dielectric strength of the semiconducting material if it is assumed that the entire voltage is dropped across the pn junction,which has wid
A material has a dielectric constant of εr=3.0 andhas an atomic density of 1028 atoms per cubic meter. If only two electrons in the outer orbital shell will distort with anapplied E-field, a
In a silicon bar uniformly dopes with 10^16 phosphorus atoms per cubic cm and 5*10^14 boron atoms per cubic cm. Calculate the mobile electron and hole concentrations for this bar.
If you photocopy a document, and then make a photocopy of the photocopy, and then photocopy the already once photocopied copy, and then repeat this process for a while, what happens to the image qua
A zero mean gaussian random vector X=(X1, X2)T has a covariance matrix given by K=[ 3 -1 -1 3 ] Find a transformation matrix A so that the vector Y=AX is a gaussian random vector with uncorrelated (
The forward transmittances of unity feedback tracking systemsare given below. For each, find the type number of the system, the steady state error coefficients k0,k1, and k2 and the steady state err
An infinitely long coaxial capacitor with inner conductor radius aand outer radius b has voltage V0 on the inner conductorand V = 0 on the outer conductor. Find the electric field inthe region betwe
An analog signal consists of three sinusoids with frequencies 3.1 KHz, 4.82 KHz, and 5.64 KHz. The signal is sampled at asampling rate of 32 KHz producing the Discrete signal x(n).
An LTI (linear, time invariant) instrument has the following impulse response: h(t)=100e -100t +100e -50tsin(50√(3)*t)/√(3) -100e -50tcos(50√(3)*t) At time zero the system is excited
At time t = 0, the voltage across a 100-pF capacitor is -5 V. the current through the capacitor is 10[u(t) - u(t -10^-4)] μA. what is the voltage across the capacitor for t>0.
A generator uses a coil that has 110 turns and a 0.475 T magnetic field. The frequency of this generator is 43.0 Hz, and its emf has an rms value of 230 V. Assuming that each turn of the coil is a s