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A 7200-240V, 60 Hz transformer is connected for step up operation, and a 144<46degrees -Ω load is connected to the secondary. Assume the transformer is ideal and the input voltage is 220 V at 60Hz. Determine (a)secondary voltage; (b)secondary current; (c)primary current; (d)input impedance at primary terminals of transformer; (e)active, reactive, and apparent power input to transformer.
Write at least one paragraph explaining why the power factor of the motor changes as the rotor mechanical speed changesin the induction motor. evaluate when the machine is operating in motor mode or generator mode.
A coaxial cable has a loss of 5.6 dB at a frequency f. A signal at f has ans rms amplitude of 1.7 mV at the cable input. What is the rms amplitude after it has traveled the length of the cable
compute the fourier transform of the following signals, using the symbolic manipulator to perform the integrations. Plot the signal x(t) and the magnitude |X(&)| of the fourier transform a) x(t) =2e ^ (-4t) cos (10t) u(t)
A load ZL is connected to the secondary of a linear transformer that is characterized by inductance's L1 = 1 H and L2 = 4 H and a unity coefficient of coupling. If w(omega) = 1000 rad/s, find the equivalent series network (R, L, and C values) seen..
a transmission line is characterized by an effective signal wave frontvelocity of Vw=c/3. calculate the time delay required in pico seconds for a signal to propagate end to end on a line that is 30cm long.
1)A passive high-pass filter is built from a 100 kohm resistor and a 100 nF capacitor. what is its cutoff frequency 2)For the filter in the above question what is its numeric gain at its cutoff frequency
What is the value of RTH?
The power dissipated in the resistor R0 is 89 W when connected to a 10V source. Find the total dissipated power if 3 resistors identical to R0 are connected in series to a 10V source.
At this bias current, what are the maximum and minimum currents that the MOSFET will be conducting (at the positive and negative peaks of the output sine wave). What must the peak amplitude of vsig be.
design a 100 hp motor controller circuit which has a push button to start and stop the motor. include an external cooling fan and a means to automatically shut down the motor is it overheats. Hint attach thermostat to case of motor.
Four point charges of 1 C are located at the corners of a square with a side a =1 m. Find the magnitude of the force experienced by each charge.
Design a vending machine controller. The machines sells coke and pepsi. The cost is 25 cents, accepting dimes and nickels. When a dime is inserted the input D is asserted. When a nickel is inserted the input N is asserted.
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