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Racecar A is traveling on a straight portion of the track while racecar B is traveling on a circular portion of the track. At the instant shown, the speed of A is increasing at the rate of 10 m/s2, and the speed of B is decreasing at the rate of 6 m/s2. For the position shown, determine (a) the velocity of B relative to A, (b) the acceleration of B relative to A.
A dc separately excited generator runs at 1200 rpm. the rated current and voltages are 100 A at 240 V. The armature resistance is 0.15 (ohms). The open circuit magnetization characteristics at 1200 rpm are
Analysing harmonic content of ac voltage waveforms, An a.c. voltage, V, comprises of a fundamental voltage of 100 V rms at a frequency of 120 Hz, a 3rd harmonic which is 20% of the fundamental
During an AP, the membrane potential typically moves from -70mV to +20mV and back again. In a cell with 10um radius and 1uF/cm^2, how many charges need to move across the membrane (and back again) to get this 90 mV voltage fluctuation?
In a certain communications system a resonant-tuned circuit (tuned at 1200 kHz with Bandwidth = 15 kHz) is connected to the output of a non-linear amplifier (mixer). Find the frequency components at the output of the resonant-tuned circuit
(a) If a motor at the end of a transmission line has a reactance of 8 ohms per phase, what is the maximum power which the machine can develop, given that the sender voltage is 4kV and the induced voltage Eo is also 4kV.
Discuss whether this is still true today, and what factors are moving wireless NICs into a more dominant role, if any.
Calculate the %age second harmonic distortion present in the amplifier's output for a sinusoidal input of 10 mV r.m.s.
Determine the maximum raw instantaneous data rate that can be provided to a single user in EDGE, assuming that a single time slot on a single GSM channel is available.
Autocorrelation and Tao, question from my ECE 302 class regarding the mean of a random process given a particular autocorrelation function in terms of tao.
An inductive circuit of 50 ohm resistance and 0.08H inductor are connected in series with a capacitor across a 200-V 50-Hz supply. The current is 3.8A leading. What is the value of the capacitor
A 3 phase Y connected alternator is rated at 1600 KVA, 13500 V. The armature resistance and synchronous reactance are 1.5 ohms and 30 ohms respectively. Calculate the % voltage regulation for a load of 1280 KW at 0.8 leading power factor.
A 78oham lossless planar line was designed but did not meet a requirement. What fraction of the widths of the strip should be added or removed to get the characteristic impedance of 75oham
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