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Which of these is the best description of a zener diode?
a. It is a rectifier diode.
b. It is a...
a. It is a rectifi er diode.
b. It is a constant-voltage device.
c. It is a constant-current device.
d. It works in the forward region
A chopper controlled electric train is powered from a 1500 VDE supply. The power semi- conductor switch element hasaminimum effectice ON time of 40 Ms. during starting and slowspeed running, the output of the chopper has to go as low as 15 V.
How many stages of starting resistance are needed, and how big should each one be?
A twelve pole, 480V, 60Hz synchronous motor has a reactance of 5 ohm. The field current is adjusted so that the equivalent field voltage Ef is 520V (line-to-line). Calculate the following: (a) Maximum torque. (b) Power factor at the maximum torque..
Design a Moore machine to detect the sequence 00010a. Derive the state diagram.b. Derive the state table and flip-flop excitation equations.c. Draw the sequential circuit.
Calculate the average power in kW that can be generated in a hydro-electric project from the following data. - what is the rating of generators installed?
An asphalt plant will produce 180 tph for a highway project. - If it is desired to keep the rolling speed under 3 mph, how many rollers are required for the project?
Explain how a matrix organization could result in the achievement of strategic fit.
Find the complex impedance of the inductance. Find the phasor voltage and current, and construct a phasor diagram. Write the current as a function of time. Sketch the voltage and current to scale versus time. State the phase relationship between t..
Suppose you have a line charge and a point charge in space. A point charge of 16nC is located at Q(2,3,5) in free space, and a unifor line charge of 5nC/m is at the intersection of the planes x=2 and y=4. If the potential at the origin is 100V, fi..
Consider a p-type Si sample with a resistivity of 0.5 cm. The doping level is uniform throughout. In a certain portion of this sample, there is an electric field of a magnitude 1000 V/cm.
design a 4th order Butterworth band-pass filter, using a low-pass filter followed by a high-pass filter, to extract the 1200Hz and 1500Hz components from the signal x(t) a. Determine the cut-off frequencies of the low-pass and the high-pass filters..
Find the output y[n] of an LTID system specified by the equation 2y[n+2] - 3y[n+1] = y[n] = 4x[n+2] - 3x[n+1]if the initial conditions y[-1] = 0, y[-2] = 1, and the input x[n] = (4)^-n u[n]
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