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It is desired to run the motor in the previous problem with a power factor of unity. To achieve this, a capacitor C is connected in parallel across the motor, which results in a circuit like that shown in Fig. 2.13. Calculate the value of C to achieve this condition.
A system or component is imaginary (critically ) stable if at least one real part of the roots of the characteristic equation is equal to zero. Determine the stability of the following system and design the circuit.
The voltage Va for the network of Fig. 6.102 is 1 V. If it suddenly jumped to 20 V, what could have happened to the circuit structure?
Discuss the effects that varying the values of K and B has on the steady-state error in unit-ramp response. Sketch typical unit-ramp response curves for a small value, medium value, and large value of K, assuming that B is constant.
How to calculate amt of time btw Energy,max,L and Energy,max,C is stored at the resonant freq.? Are these max energy stored at the same time
Draw a Mealy-type state transition diagram for the parity detector of figure 5.5.
A (bad) solution analogous to that in Figure E14.30(b) could be employed, requiring two circular SRs. As in the exercise above, devise a better circuit that solves this problem.
DWDM optical transmission system is designed to have 100-GHz channel spacings. how many wavelength channels can be utilized in the 1536 to 1556 nm spectral band?
The controlled variable in a closed-loop system is the direction of a robot arm. Initially it is at 50o; then it is commanded to go to 15o. When the error is 10o for the first time, what is direction of the robot arm
For each of the following signals, determine whether it isperiodic; if it is, determine its fundamental (i.e., smallest) period T0 and fundamental frequency f0. (a) x(t) =sin2(2t) (b) x(t) =cos(√3t) +sin(2t)
Design a half-wave rectifier power supply to deliver an average voltage of 9V with a peak to peak ripple of 2V to a load. The average load current is 100mA. Assume that ideal diodes and 60Hz. ac voltage sources of any amplitudes needed are avail..
A shunt DC generator has a termianl voltage duringopen-circuit of 127V. When the machine is operating at rated load,the rated terminal voltage is 120V. Find the load current ifthe field resistance is 15 ohms and the armature resistance is 0.02ohms..
Select two different applications that use electrical wiring.
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