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A three-phase, two-pole, 400-V (per phase), 60-Hz induction motor develops 37 kW (total) of mechanical power (Pm) at a certain speed. The rotational loss at this speed is 800 W (total). (Stray-load loss is negligible.)
a. If the total power transferred to the rotor is 40 kW, determine the slip and the output torque.
b. If the total power into the motor (Pin) is 45 kW and RS is 0.5 Ω find IS and the power factor.
When the scope probe is properly calibrated, it can be modeled as a 9[M Ohm] resistor in parallel with a capacitor having a capacitance l/9th that of the oscilloscope input capacitance.
Derive a minimum-cost realization of the four-variable function that is equal to 1 if exactly two or exactly three of its variables are equal to 1; otherwise it is equal to 0!
Find the required electrical lengths of the five sections, and use CAD to plot the insertion loss from 0 to 6 GHz. (b) Lay out the micro strip implementation of the filter on an FR4 substrate having
The current in a device varies with time according to the function: i(t)= 3e^(-t/T) A. Where T is the time constant. How many time constants are required for the current to drop to 250 mA
A 400-kV transmission line has a hot-weather power rating of1400 MVA. If the transmission line is operating in cold weather, itis rated for 2200 MVA (at 400 kV). The transmission line is undercold weather conditions, and the operating voltage is 3..
What mathematical feature of the electric field makes it impossible to define an electrostatic potential field in this case? Explain your answer in two or three sentences.
In fission reactors one deals with neutrons having kinetic energies as high as 10 MeV. How much error is incurred in computing the speed of 10-MeV neu trons by using the classical expression rather than the relativistic expression for kin..
1) Design inverting amplifier circuits with gains of 1, 10,and 100, and show the component values. 2)Calculate the inverting amp output at each gain setting for V2 is1.0Vpp at 100Hz
Present a finite difference discretisation on the equidistant square mesh. How many mesh cells (as minimum) are necessary so that the matrix is diagonally dominant
What is the resolution of an ADC with a word length of 12-bits and an analogue signal input range of 100 V A sensor produces a maximum analogue output of 5V. What word length is required for an ADC if there is to be a resolution of 10mV
A current element of length 1cm is located at (1m, 3m, 4m) in free space and carries a current of 20mA along ay. An infinitely long filamentary current of 12A along az passes through the coordinate origin (0,0).
A 40 Ω Resistor, a 5mH inductor, and a 1.25μF capacitor are connected in series. The series-connected elements are energized by a sinusoidal voltage source whose voltage is 600 cos(8000t + 20°) V.
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