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In electronic circuits it is not unusual to encounter currents in the microampere range. Assume a 35micro Ampere current, due to the flow of electrons. What is the average number of electrons per second that flow past a fixed reference cress section that is perpendicular to the direction of flow?
The speed of a 10HP, 230V, 1200 rpm separately excited DC motor is controlled by a 1-phase full-wave bridge converter. The rated armature current of the motor is 10 A. The armature resistance is 0.25 Ohm and the armature inductance is 10 mH.
A dielectric rod of radius 10mm extends along the z axis from z=0 to z=10m. The polarization of the rod is P = [2z^2+ 10] az (az ==> is towards the z component in other words its the the unit vector k )
A GaAs device is dopeed with a donor concentration of 3*10^15 cm^-3, For the device to operate properly, the intrinsic carrier cconcentration must remain less than 5 percent of the total electron concentration.
A liquid level system converts a 4-10 m level into a 4-20mA current. Design a three mode controller (PID im assuming) that outputs 0-5 volts with 50% PB, 0.03 min integration time, and 0.05 min derivative time. Fastest expected change time is 0.8 ..
The frequencies of the tones are 100 Hz, 300 Hz, and 450 Hz. The sampling rate is 1 kHz. Describe a low pass, a band pass, and a high pass filter that could be used to detect the individual tones.
An inductor and a capacitor are connected in series and connected to a variable frequency voltage source (e.g., a function generator). Explain what happens to the total circuit impedance and current as the source frequency is varied.
The mass of flywheel of an engine is 6.5 tonnes and the radius of gyration is 1.8 metres. It is found from the turning moment diagram that the fluctuation of energy is 56 kN-m. If the mean speed of the engine is 120 r.p.m.
Compute and plot the correlation sequences r s1s2 (l), r s0s0 (l), r s1s0 (l) and r s2s0 (l) . Compute and plot the cross-correlation sequences and of the received signal with the template signals and s 2 (n).
The fuel tank contains 33 kWh per gallon. If the vehicle were to be replaced by an electric vehicle that charges from the power grid, how much power would it draw (in W, kW, or MW) to recharge at the same rate as the gasoline powered automobile
Get digital still images and video sequences from the Internet, as needed. You can use color and/or gray-scale images. 2. Implement intra-frame DPCM . Start with a linear quantizer in the initial implementation.
A power amplifier has a gain of 20 dB and an input level of 2 volts. Assuming that the input and output impedances are the same, what is the voltage level at the amplifier output
Second order unity gain Tschebyscheff low pass filter. The task is to design a second order unity gain. Tschebyscheff low pass filter with a corner frequency of fc = 12.5kHz and a 3dB passband ripple. Determine C1, C2, R1, and R2.
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