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A system, linear and time invariant is described by the following difference equation:
4y[n-2] + 2y[n-1] + y[n] = x[n]
a) Determine if the system is stable.b) Find the system response to the unit step.
1) How would you identify the anode of an unmarked diode using a DMM (Digital Multimeter) 2) Explain how the clamping circuit adds or subtracts a DC component to an input voltage.
An FSK system with Rb = 110bits/sec is transmitted over an RF Channel with white noise. The receiver uses non-coherent detection. If Eb/N = 5dB, evaluate Pb for this system.
An AB latch operates as follows: If A = 0 and B = 0, the latch state is Q = 0; if either A = 1 or B = 1 (but not both), the latch output does not change; and when both A = 1 and B = 1, the latch state is Q = 1.
(Combinational versus Sequential Circuits) Which of the fol¬lowing contain circuits that are likely to be combinational and which contain sequential circuits? Explain your rationale.
A single-phase 240/120 V transformer has the following parameters: R1 = 1-ohm; R2= 0.5 -ohm; X1 =6 -ohm; X2 = 2 -ohm; R0 = 500 -ohm; X0 = 1.5k -ohm.A load of 10 -ohm at 0.8 power factor lagging is connected across the low-voltage terminals of the tra..
The collector current was measured for different values of load resistance. It was noticed that the collector current was pretty much constant for the first 1900 ohms and then it fell drastically.
(a) Determine the cone angle that will match the line to an infinite length biconical antenna. (b) For the cone angle of part (a), determine the two smallest cone lengths that will resonate the antenna.
Open Neutral Assume that the load is star connected with the neutral disconnected. Each phase has a series RL load with R = 5 ohms and L = 20 mH. Plot the neutral voltage Plot the phase to neutral voltage for phase a.
Design a four pole lowpass filter with Sallen-Key topology and a Butterworth characteristic. The cutoff frequency of the filter must be 16 kHz.
The resistance of the coil is 0.2 ohm. The inductance of the coil is 1.2e-4 H. The rotor inertia is 1.0e-5 kg m2. The current to torque gain is 0.03 Nm/A. The friction torque is 0.09 Nm. A 12 V voltage source is applied to the motor.
What are the four characteristic parameters of transmission line? Which parameter is used to calculate the real loss? Which parameter is used to calculate the charging current? Which parameter is almost negligible and why?
The equivalent circuit parameters are R1=0.48 ohms, X1=0.80 ohms, R2'=0.42 ohms, X2'=0.80 ohms, Xm=30 ohms The motor is operating with slip of 0.04. Find the input current and power factor.
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