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A motor is connected to a 120 V rms, 60 Hz line. The motor is rated at 2 kVA and operates with a power factor of 0.8.
(a) Find the apparent and real power.
(b) What is the current flowing into the motor?
(c) Find the resistance R and inductance L of the motor.
Laboratory measurements on a dc voltage source yield a terminal voltege 75V with no load connected to the source and 60V when loaded with a 20 Ohm resistor. A)what is the thevenin equivalent with respect to the terminals of dc voltage source
An autotransformer is used to connect a 12.6-kV distribution line to a 13.8-kV distribution line. It must be capable of handling 2000 kVA. There are three phases, connected Y-Y with their neutrals solidly grounded. What must the NC / NSE turn..
A finite state recognizer or sequence detector has one input (X) and one output (Z). The output is asserted high (Z=1) whenever the input sequence 1101 has been observed during the past four clock cycles, as long as 1110 has never been observed.
If the load current suddenly increases by 0.5-A, what is the magnitude of the transient voltage on the power bus?
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 ..
The current through a 8 mH coil changes at the rate of 3.5 A/s. Determine the voltage that appears across the inductor. (mV)
Market research and a competitive analysis are typically used in order to determine the feasibility of a new technology. How you could use advanced market research in order to remain competitive
A 40 H resistor, a 5 mH inductor, and a 1.25/xF capacitor are connected in series. The series-connected elements are energized by a sinusoidal voltage source whose voltage is 600 cos (8000t + 20°)V. a) Draw the frequency-domain equivalent circuit.
Electrons and holes are moving in a uniform, one-dimensional electric field E = +2500 V/cm. The electrons and holes have mobilities of 700 and 250 cm2/V · s,respectively. What are the electron and hole velocities If n =1017/cm3 and p =103/cm3
For both designs, the supply voltage is nominally 9 V and varies by +/- 1V. For the first design, assume that the availability of supply current is not a problem, and thus operate the diode at 20mA. For the second design, assume that the current f..
A space traveler moving at the speed of 0.70c with respect to the earth makes a trip to a distant star that is stationary relative to earth. He measures the length of this trip to be 6.5 light - years.
Use the upstream wind power relation to calculate the power in a 5-mph wind if the circular wind swept area has a diameter of 2 meters, and the elevation (altitude) is that of Logan, Utah. [Reference: Google: Images for air density vs. altitude]
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