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A 3-phase induction motor runs at a speed of 1485 rpm at no-load and at 1350 rpm at fullload when supplied from a 50-Hz, 3-phase line.
(a) How many poles does the motor have?
(b) What is the % slip at no-load and at fullload?
(c) What is the frequency of rotor voltages at no-load and at full-load? (d) What is the speed at both no-load and fullload of: (i) the rotor field with respect to rotor conductors, (ii) the rotor field with respect to the stator, and (iii) the rotor field with respect to the stator field.
An amplifier has a sinusoidal output signal and is delivering 100 W to a 50- load resistor. What output resistance is required if the amplifier is to dissipate no more than 2 W in its own output resistance?
The current through a 20-ohm inductive reactance is given. What is the sinusoidal expression for the voltage? Sketch the (v) and (i) sinusoidal waveforms on the same axis. A - i = 5sinwt
An analog voice signal that can vary over the range 0.50 mA is digitized by sampling it at 8 kHz. The first four sample values are 10, 21, 36, and 16 mA. Write the corresponding digital signal (a string of 1 and 0 bits) by using a 4-bit representa..
Design an N-input mux from N/2 input Mux. Use this to describe a design that takes log N gate delays and O(N) transisitors.
If the load current suddenly increases by 0.5-A, what is the magnitude of the transient voltage on the power bus?
Consider the circuit as shown below. If Vin peak voltage = 12V, Calculate the output voltage Vo. Open loop voltage gain of the Operational Amplifier A=10,000. The voltage drop across the diode is 0.7 V.
a digital signal represented by a binary voltage +5.55 and -4.5V , is transmitted over an AWGN channel with noise standard dev 1.12 V.Compute the volt. f the optimum thresholdwhen the priori probabilities of the binary source
Single pole amp. has an open loop gain 10^6 and open loop bandwidth of 10Hz. If the feedback factor =1, calculate the gain and bandwidth after the feedback
rc ciruit current course 3u-t a in parrallel to 6k ohm resistor and 5uf cap. determine the instantaneous power
A) Determine the individual residues at the single poles at s = 0 and at s = -1 B)determine the two residues at the complex conjugate poles C) using the inverse laplace transform of the single poles and the complex conjugate poles determine the time..
determine whether the statements are valid or invalid. If a statement is valid, please give a proof as in problem 1. If a statement is invalid, you need only provide a counterexample. If x + y = x + z, then y = z
2a.) Find A dot B if A = 3e1+ 5e2-e3 and B = e1 -e2+ e3 if e1 dot e1 = 2, e2 dot e2 = 3, e3 dot e3 = 5, e1 dot e2 = -1, e1 dot e3 = -3, e2 dot e3 = 2
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