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A 3-phase, 200 hp, 480 V, 6 pole, 60 Hz synchronous motor has asynchronous reactance x1= 1.5Ω and x2=1.5Ω. Neglect all losses. The motor is connected to an infinite bus, and it delivers its rated horsepower at unity power factor. Determine the pullout torque (the maximum torque that the motor can deliver without losing synchronism).
A parallel-plate capacitor has capacitance 9.00 µF. (a) How much energy is stored in the capacitor if it is connected to a 9.00 V battery (b) If the battery is disconnected and the distance between the charged plates doubled
Why does the Thevenin's technique work only for circuits with linear elements (or at most a single non-linear resistor). Figure out where the mathematics of the theorem breaks down for non-linear elements and why
For Each Pair of Second-order systems specifications that follow, find the locations of the second order poles a) Overshoot %= 12% , Ts= 0.6 seconds b) Overshoot %= 10%, Tp= 5 seconds c) Ts= 7 seconds, Tp= 3 seconds
Consider a Si p-n junction with n-type doping concentration of 10^16 cm^-3. This junction is forward bias with V=0.8 V at 300 °K. Calculate the minority-carrier hole concentration at the edge of the space charge region.
An aluminum casting that has a mass of 10 kg sits on a steel surface. How much force will be necessary to get it to start sliding. The static coefficient of friction (mu) for aluminum on steel is 0.61.
A 75-ohms lossless transmission line is terminated in a load ZL = 80+j60. The line is length lamda/8 long and connected to a line Z0= 50-ohms. What is the input impedance on the 50-ohms line, lamda/8 from the junction
Calculate the space charge region width and the capacitance of thereverse biased (1V) abrupt Si pnjunction with dopant concentrationsof: acceptors 1016cm-3, donors 1017cm-3. Temperature is 300K.Assume Si dielectric permittivity of 11.7.
A number stored in IEEE single precision floating point format has S=0, E=0111 1101, and F=0.1000 0000 0000 0000 0000 000. What is this number in decimal
Design a half-wave rectifier as a dc power supply that delivers 0.2A and 15V peak values to a load. The ripple voltage is to be no more than 0.4V peak to peak. The rectifier is led from the voltage line (120Vrms, 60Hz) through a transformer.
a) Write the real-time expressions in the z=0 plane. What kind of polarization exists here Is is clockwise or counterclockwise (looking along +z) b) Find the expression for the accompanying H(z) field.
b) Draw the LFSR circuit to generate the CRC. Generate the CRC by applying the data pattern to the LFSR and verify the answer in part a. c) An error vector is given by X7+ X6+ X4+ X3+1. What is the received bit pattern corresponding to part a
A separately excited DC generator,when running at 1200 RPM, supplies 200A at 125V to a circuit ofconstant resistance. What will the current be when the speed is reduced to 1000 RPM if the field current remains unchanged
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