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A 460-V 200-kVA 0.85-PF-leading 400-Hz four-pole Y-connected synchronous motor has negligible armature resistance and a synchronous reactance of 0.90 per unit. Ignore all losses.
(a) What is the speed of rotation of this motor?
(b) What is the output torque of this motor at the rated conditions?
(c) What is the internal generated voltage of this motor at the rated conditions?
(d) With the field current remaining at the value present in the motor in part (c), what is the maximum possible output power from the machine?
A signal has the double-sided amplitude and phase spectra shown in Figure 2.34. Write a time-domain expression for the signal.
An early code used in radio transmission involved using codewords that consist of binary bits and contain the same number of 1s. Thus, the 2-out-of-5 code only transmits blocks of 5 bits in which 2 bits are 1 and the others 0.
However, for short-time operation, a delta connection can be used at the nominal wye voltage. Find the ratio between the power delivered to the same motor in the wye and delta connections.
The parallel resonant converter as a single-phase high-quality rectifier.It is desired to utilize a transformer-isolated parallel resonant dc-dc converter in a single-phase low-harmonic rectifier system
what is the change in capacitance for a diode with cross-sectional area of 0.01cm^2, dielectric constant of 11.8 when a change in the applied voltage gives a depletion distance change from 1/2 micrometer to 1 micrometer
An induction motor takes 350kW at 0.8 power factor lagging while driving a load. When an overexcited synchronous motor taking 150kW is connected in parallel with the induction motor, the overall power factor is improved to 0.95 lagging.
For best precision, he wants to condition the signal such that it utilizes the full range of the A/D converter. Calculate the required DC offset and gain of the signal conditioner such that the signal will utilize the full range of the A/D converte..
A ripple carry adder is made of full adder cells each having 1 unit of combinational delay. To convert a four-bit ripple carry adder into a four stage pipeline adder proceed as following.
Supporting Activities: Introduction to Modems
Consider the waveform equation: a. What is the frequency of the waveform (in Hz) b. What is the voltage Vx at a time t = 1.5 ms c. What is the voltage Vx at a time t = 3 ms d. What is the voltage Vx at a time t = 4.5 ms
A 60O lossless line is connected to a source with Vg=10
One of the ways to look at programming at the assembly-language level is to consider it as putting together code fragments that do various little jobs. (This is a little higher-level than just thinking of it as a sequence of machine instructions.)
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