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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?
Give an example of an RC circuit whose transient behavior cannot be modeled by having a function generator with square wave output replacing the mechanical switch.
A certain parallel circuit coornsists of onrely 1/2 W resistors each having the same resistance. The total resistance is 1 k ohm and the total current is 50mA. If each resistor is operating at one-half its maximum power level
In a toaster the heating unit is a Nichrome wire whose resistance is 660 micro-ohm-CM/ft and resistance is 20 ohms.Determine the resistance of copper conductor of equalcross-section, but 10 times as long as the Nichrome wire.
Design a band-pass filter with a low cutoff frequency of 200 Hz, a high cutoff frequency of 1 kHz, and a pass-band gain of 4. Calculate the value of Q for the filter. Also, draw the approximate frequency response of this filter.
Which mains frequency gives a more desirable choice of C1
The bandwidth of a series resonant circuit is 400 Hz. (a) If the resonant frequency is 4000 Hz, find Q. (b) If R = 10?, what is the value of XL at resonance (c) Find the inductance L and capacitance C of the circuit.
What is the maximum allowable ampacity of a #2 AWG THHN copper conductor connected to a breaker having 60 C termimal ratings
How could the rising-tone acoustical illusion be modified to obtain a tone that goes up and down in pitch at the same time.
In an electrocardiograph, the heart signals contain components with frequencies ranging from dc to 100Hz.During exercise on a treadmill, the signal obtained from the electrodes also contains noise generated by muscle contractions. Most of the nois..
implement a 5x5 signed multiplier and determine the number of full and half adders needed for the multiplier. draw a
If the cost of heat rises by $200 per year (uniform gradient) after the next year and the owner plans to keep the present building for 15 more years, if the interest is 10% per year, what is the cost of heat without the installation
Input Xi and Yi of each Full Adder circuit in an arithmetic circuit has the digital logic specified by the following Boolean functions: Xi =Ai Yi = B*iS + BiCin* Where S is a selection variable, and Cin is the input carry, and Ai and Bi are the inp..
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