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A 10-hp, 230 V, 60 Hz, three phase Y- connected, synchronous motor delivers full load at a power factor of 0.707 leading. The synchronous reactance of the motor is j5 Ω per phase. The rotationnal loss is 230W and the field winding loss is 70W. Calculatea. The generated voltageb. The efficiency of the motor. Neglect the armature winding resistanceA 208-V Y connected three phase synchronous motor has a synchronous reactance of 4Ω per phase and negligible armature winding resistance. At a certain load the motor take 7.2kW at 0.8 pf lagging. If the power developed by the motor remains the sam while the excitation voltage is incresae by 50% by rasing the field excitation, determine:a. The new armature currentb. The power factor
If an external load is to be placed across teh current phasor source, find the Thevenin source equivalent of the circuit described. Draw the original circuit and the Thevenin equivalent circuit. What must the load be to extract maximum power from ..
A conical section of material extends from 2.0 cm = r = 9.0 cm for 0 = (theta) = 30° with (permitivity) = 9.0 and (omega) = 0.020 S/m. Conductive plates are placed at each radial end of the section. Determine the resistance and capacitance of the ..
Your boss asks you to contruct a temperature sensorfor measuring the ambient temp outside (-30degreee celcius
Assuming that the current through and inductor is i l(t) = 10exp(-t/3). Find at what time this current dropped by 50percent of its initial value.
In the latest release of the game there are 8 characters the user can choose from. The user can choose one character from the 8 characters by moving the controller joystick up, down, left, or right. Each character has a 3 bit code that is sent to ..
the current through a .2 μF capacitor is a rectangular pulse with an amplitude of 2 mA and a duration of 4 ms. Find the capacitor voltage at the end of the pulse when the voltage at the beginning is -2V.
Design a circuit that provides a voltage gain of + 3. Draw the circuit schematic identifying supply voltages and show your work on component selection.
Two short antennas each of length 10cm at the origin carry identical currents of I = 5 Sin (wt). One is in the az direction and the other one is in the ay direction. If the frequency of the antenna is 60 MHz then calculate
Find the current in a ground loop that is 200 ft long, has a wire resistance of 0.05 ohms/ft, and has a difference of 4 V between grounds.
Use this table of part c to determine the mean, median, and mode of the grouped data. Compare your results with those in part A, and comment. E. use the frequency table of part C. to determine the variance and the standard deviation of the groupe..
Design a system using a counter that produces a 1 output when theinput has been 1 for eight or more consecutive clock times. Use acounter with a clocked active low clear and no enable input.
Suppose a car is traveling at +23.2 m/s, and the driver sees a traffic light turn red. After 0.563 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 7.00 m/s2. What is the stopping distance of the car
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