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How many pulses per second must be supplied to the control unit of the motor in Problem 9-8 to achieve a rotational speed of 600 r/min?
Problem 9-8
For a particular application, a three-phase stepper motor must be capable of stepping in 10° increments. How many poles must it have?
A thermal oxide of thickness 120 nm needs to be grown on a silicon wafer (100) in dry oxygen. If the process integration issue requires having a temperature not higher than 1050 degreeC, determine the time required to obtain the desired thickness.
A three-phase, 345-kV, 60-Hz transposed line is composed of two ACSR 1,113,000, 45/7 Bluejay conductors per phase with flat horizontal spacing of 11 m. The conductors have a diameter of 3.195 cm and a GMR of 1.268 cm.
A current I = 15√2
What is the time response
An automobile battery has an open-circuit voltage of 13.6V and a total internal resistance of 0.012 ohms. What is the terminal voltage (the voltage across the plus and minus terminals) of the battery when it is delivering 250A to the starter motor?
Identify how one can generate pulse width modulation using the 9S12DG256 microcontroller. Identify various applications that require PWM. Show how microcontroller PWM interface is used to drive servomotors, and discuss these motors.
if an automobile battery delivers 120 A when the car is being started, and the starting process takes 6 seconds, how many electrons flow out of the battery
Assuming the outcomes to be equally likely, find the probability that at least one vehicle turns left. (Would this assumption always be reasonable?)
1) A 5H inductor changes its current by 6 A in 0.4s. The voltage produced at the terminals of the inductor is 2) An RL circuit has R=2 ohms and L=4. The time needed for theinductor current to reach 40% of its steady state value is
What are the benefits of high and medium voltage SF6-switchgear?
A 120 V separately excited DC Motor is operated at a fixed field current. It has an armature resistance Ra = 10 ohms, and a machine constant K = 0.1 V/rpm. The armature current is 0.5 amps with no load, and 3.0 amps at full load.
1) Calculate the open circuit voltage VOC (ZL removed) (magnitude and phase angle) 2) Calculate the Thevenin Equivalent impedance ZTH for this circuit (magnitude and phase angle)
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