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consider a running motor with Z = 6 + j7 ohm
A) calculate the line crurrent if the motor is operated at 120 VAC RMS
B) calculate the required paralell capacitor value to reduce the line current to a minimum
C) find the new line current
D) calculate the power factor (PF) of the motor without the capacitor
Given the DSP system, where the sampling rate of 4000 Hz is used, the anti-aliasing filter is the Butterworth filter with a cut-off frequency of 200 Hz, and the percentage of aliasing level at the cut- off frequency is required to be less than 10%
A 10 cm length of a K-band copper waveguide is filled with a dielectric material with er = 2.55 and tan f = 0.0015. If the operating frequency is 15 GHz, find the total loss through the guide and the phase delay from the input to the output of th..
Describe the phenomenon of aliasing caused by under sampling. How can aliasing be mitigated What are the advantages of digital communication over analog What is quantization noise How can you reduce it
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, a 5th harmonic which is 10% of the fundamental and at a phase angle of 1.2
Design an ac-dc voltage converter based on half-wave rectification and filtering. The requirements are: 1. Choose the values of the load resistor R and the capacitor C so that the converter will have a ripple factor of 10%
1-phase 2-winding transformer is rated 30 kVA, 360/90 V, 60 Hz. A source connected to the 360-V winding supplies an impedance load connected to the 120-V winding. The load absorbs 15 kVA at 0.8 p.f. lagging
Briefly discuss the impact of electron energy, electron current and target on the Bremsstrahlung generated.
Suppose we transmitted 5 cos wct for logic one and 15 cos wct for logic zero. Find the maximum signal energy. Design a demodulator and show the detection criterion for the output of the demodulator. Finally, find the bit error-rate.
Use the table on slide 11 of this lecture and determine the line parameters L and C of the transmission line. Consider that the TL is lossless and µ = µ0 for polystyrene. Then find the characteristic impedance of the line Z0, phase velocity
a signal franging from 1khz to 100khz will be put into a davice that will need amplification that will output to speakers. A 12v battery is available as a power source, however the current out of the battery should be kept to a minimum.
If the distance between two slits is .0500 mm and the distance to the screen is 2.50 m, find the spacing between the first and third order bright fringes for light of wavelength 700 nm.
an 8kg block is released from the rest on a frictionless incline of angle 60.if the speed of the box is 10m/s when it reaches to the ground what was the height of the initial point it was released
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