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a power source is giving 12 V to a circuit. In the circuit there is a resistor. Therefore, would the voltage drop 12 V when the charge moves across the resistor making there 0 V in the circuit after the resistor? This does not make sense to me because if there is 0 V in the circuit, what would happen to the charge after it crosses the resistor? Also, are charges scattered all around the circuit so that a flow of current is all over the circuit at all times?
At some instant, it goes into regenerative braking. Calculate the armature voltage va at that instant, if the current ia is not to exceed 10A in magnitude. Assume that the inertia is large and thus the speed changes very slowly.
A Newton's ring apparatus is to be used to determine the radius of curvature of a lens (see the figure below and Problem 75). The radii of the nth and (n+16)th bright rings are measured and found to be 0.129 and 0.317 cm
A military satellite uses 10 GHz for the downlink frequency. The distance to the satellite is approximately 36000 km. if the satellite transmitter produces a power of 50 dBm with a transmit antenna gain of 20 dB and on the ground
A DSP engineer applies DFT to 500 data samples that are sampled at 250 Hz to plot the signal spectrum. What is the frequency that corresponds to the frequency bin number
In a typical mobile communications base station (or cell site), a radio frequency (RF) signal is amplified in the base station and then sent (over cable) to the antennas at the top of the tower.
It is operating at 50% of its rated load at a power factor of .5 leading, compute efficiency using both exact and approximate equivalent circuits as referred to the primary side. Tabulate the percent errors in the currents, voltages, powers
If a particular radar reciever can detect the target using HH polarization at a maximum distance of 10km, find the maximum distance at which the target can be detected using VV polarization. Assume a standard radar equation.
A sensitive IC (integrated circuit) on a circuit board is located 1m from a long power line carrying 10A. The power line generates a magnetic field. You can place a trace on a circuit board with current running parallel to the power line to cancel..
Using the Karnaugh Map, solve the fallowing expression and answer the question: F= S (4,5,9,13,15) and don't care cells are (0,1,7,11,12). A) Find its minimized Sum of product (SOP) expression. B) Find its minimized product of Sum (POS) expression.
Design your circuit so that the STOP push button must be pressed before the motor can be switched direction Also incorporated a 5 second delay to inhibit restart after the STOP push button has been pressed Green light
Discrete Systems and Digital Signal Processing Looking for a step by step solution to the following question, y(n) - .6y(n-1) + .6y(n-2) = 0, y(-1) = 0, y(-2) = -1 What is the output do to the given initial conditions
A helical spring is fabricated by wrapping wire ¾ in. in diameter around a forming cylinder 8 in. in diameter. Compute the number of turns required to permit an elongation of 4 in. without exceeding a shearing stress of 18 ksi. G = 12 × 106 psi.
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