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Consider a multi-stack, multiphase variable-reluctance stepping motor, such as that shown schematically in Figure, with 14 poles on each of the rotor and stator stacks and three stacks with one phase winding per stack. The motor is built such that the stator poles of each stack are aligned.
a. Calculate the angular displacement between the rotor stacks.
b. Determine the frequency of phase currents required to achieve a rotor speed of900r/min.
a 10uF capacitor is plugged into a 110v rms 60 hz voltage source with an ammeter in series. what is the rms value of the current through the capacitor?
What is Cramer's Rule and how to Find Two Variables by Cramer's Rule (need the answer Step by Step with Solved Examples
A)At what reverse bias voltage does the reverse-bias current in a silicon pn junction diode reach 90 percent of its saturation value B)what is the ratio of the current for a forward-bias voltages of 0.2 V to the current for a reverse- bias voltage o..
1. The voltage gain of an 11.2 kHz low-pass filter is -12 dB; what is its numeric gain 2. Two amplifiers are cascaded, one with a voltage gain of 6.02 db and the other with a voltage gain of 12. If 10 mV is measured at the input of the second ampl..
A temperature transmitter has aninput range of 0 to 100 degrees celsius, an output range of 4to 20 mA, and an accuracy of ± 0.5%. The ideal transmitterhas a linear output from 4 mA at 0 degrees celsius to 20 mA at 100degrees celsius.
How to Get Connection from Solar Panel. Back Side of The Solar Panel Junction Box and The Function of Diodes in it.?
Design a differential input difference amplifier for a differental voltage gain of Ad=20. There are no stipulations for minimum or resistance values. What is the input resistance of the differential amplifier
The power measured by a Prony brake attached to an engine flywheel is 3.8 brake horsepower. The indicated horsepower, as measured by means of indicator cards is 4.1. What is the efficiency of the engine
Determine the expression for the frequency response H(O) of a causal IIR LTI discrete-time system characterized by the input-output relation y[n]=x[n]-ay[n-R], |a|
An infinitely long wire is placed in a space with relative permeability of 9000 carrying current of 1.9 A in the +y direction. What is the magnitude of the magnetic flux density at (0.03,0,0) [meters] in units of Tesla
A silicon NPN bipolar junction transistor is to be used as an amplifier. What are the required bias conditions for this to occur If the emitter voltage is -3V, pick an acceptable base voltage and an acceptable collector voltage for the transistor ..
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.
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