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A permanent-magnet automotive fan motor draws 20 A from a 12-V source when the rotor is locked (i.e., held motionless).
a. Find the armature resistance.
b. Find the maximum developed power that this motor can produce when operated from a 12-V source.
c. Repeat part (b) for operation at 10V (this represents a nearly dead battery) and at 14V (this is the terminal voltage during charging of the battery after the engine is started).
Design a Mealy state machinethat is a *majority vote* detector that indicates when the majorityof the last three samples received are ones. When at least 2out of the last 3 inputs received are ones, it will output a1.
Determine if each of the following signals is periodic. If a signal is periodic, determine its period. a) cos (squ 3t)b)exp ( c) sin (2t) ^2 d) sin(2t^2)
A 230 V DC series motor has an armature circuit resistance of 0.2 and a eld circuit resistance of 0.1. At rated voltage, the motor draws a line current of 40A and runs at a speed of 1000 rpm.
John take a 1kΩ resistor, the 10μf capacitor, and the 10 mH inductor, and one by one connects them across one of the outlets in his dorm room. How much power is dissipated by each component (as a function of time)
Two loudspeakers, one of them generates sound 400W power the other with 100W. The sound is generated isotropically from each loudspeaker. A listener is seated 20 m from the 100 W loudspeaker and 40 m from the other loudspeaker.
Controlling interest rates is an example of
A long cable with cylindrical cross-section has inner conductor of radius a and an outer conductor of inner radius b and outer radius c. The dielectric constant of the material between the conductors is 3.
A supplier claims that a transistor has a current gain of 100. 15 transistors are measured, and are found to have a sample mean of 99.5 and a standard deviation of the sample mean 2. a) For what confidence level would the claim be valid
A coaxial line is filled with a very slightly lossy material with a relative dielectric constant of 5 The line would have a characteristic impedance of 100 ohm if it was air-filled. (a) What is the characteristic impedance of the dielectric-filled li..
a) Find the amplitude and phase of the Thévenin voltage with respect to the terminals a, b. b) Find the Thévenin impedance with respect to the terminals a, b. c) Draw the Thévenin source physical equivalent circuit.
antimony pentafluoride,SbF5, is very strong lewis acid and can be used in combination with HF to form a superacid solution. predict the molecular geometry of SbF5 and draw its lewis structure.
a 9.1 v zener diode exhibits its nominal voltage at a test current of 28 mA . at this current the incremental resistance is specified as 5 ohms . find Vz0 of the zener model . find the zener voltage at a current of 10 mA and at 100 mA.
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