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A three-phase two-pole winding is installed in six slots on a stator. There are 80 turns of wire in each slot of the windings. All coils in each phase are connected in series, and the three phases are connected in Δ. The flux per pole in the machine is 0.060 Wb, and the speed of rotation of the magnetic field is 3600 r/min.
(a) What is the frequency of the voltage produced in this winding?
(b) What are the resulting phase and terminal voltages of this stator?
A shunt dc motor has RA = 0.1-ohm and VT = 440 V. For an output power of 16.1 hp, nm = 1,213 rpm and IA = 103 A. The field current remains constant. Find the the rotational power loss in hp.
Show that for wires of identical dimensions but made of different materials, such as copper and aluminum, the resistance is proportional to the resistivity of the material. the resistance of a certain copper wire is 1.5.
Assume that we try to predict this sequence with a BHT using one-bit counters. The counters in the BHT are initialized to the N state. Which of the branches in this sequence would be mis-predicted?
What Boolean logic process could be used to convert the binary form of all decimal digits to the hexadecimal representation of its ASCII character (ex.; 00001000 converted to 00111000 OR $8 converted to $38)
In the fall in the northern United States, a manufacturerof snowblowers makes the following advertised offer. If youpurchase a snowblower and then it snows less than 20% of averagethat winter you get a full refund of what you paid (and keep the sn..
The electric motors unmanned drones use transformers to produce sufficient current to move the flight surfaces. Due to the weight restrictions of the vehicle, the transformers use a ceramic rather than iron, the ceramic has a permeability of mu = 4..
A series combination of two capacitances, valued 0.2 μF and 0.6 μF initially discharged, is charged to 10V. find the charge and energy stored in each capacitance.
The information signal amplitude is 1.5 V. Determine the carrier frequency and information signal frequency. If the output deviation changes to between 90.002 and 89.998 MHz, calculate the information signal amplitude.
For a certain population of students taking the Miller Analogy test, it is found that the scores are normally distributed with a mean of 50 and a standard deviation of 5. What is the score on this test that is the cutoff value for the top 12 perce..
(a) Calculate thefrequency domain representation S(f)ofthis signal (b) Calculate the frequency domain representation ofthe pre-envelope S+(f) OFS(t) (c) What is thepre-envelope s+(t) of s(t)
A separately excited dc generator produces 400 v at 1500 rpm under open circuit conditions. Find the induced emf if the speed changes to 2000 rpm. Assume the flux is constant.
The junction capacitance of a silicon pn junction is 1.83 pF at T = 300 K when the anode and cathode are held at the same voltage. The concentration of donor atoms in the n-region of the junction is 1016 cm ^-3
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