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Potential and field in spherical capacitor. A spherical capacitor is made of two concentric shells. The inner shell is 10 mm in diameter. The outer shell is 10.1 mm in diameter. A potential V0 = 50 V is connected across the two shells so that the positive pole of the battery is connected to the inner shell. The space between the shells is filled with a dielectric with a relative permittivity of 2.25. Calculate:
(a) The potential everywhere between the shells. Does the potential depend of permittivity? Explain.
(b) The electric field intensity everywhere between the shells.
(c) Plot the potential and electric field intensity as a function of distance from the inner shell.
Design a full wave rectifier as dc power supply with a 1kΩ load that operates from a 120Vrms, 60Hz supply through a 10 to 1 step down transformer. The capacitor is connected to parallel to the load to provide the peak to peak ripple voltage of 2% ..
The load draws 1.2 pu current at 0.6 puvoltage while drawing 0.5 pu (true) power. If the base volageis 20 kV and the base current is 160 A, calculate the power factor and the ohmic value of the resistance of the load.
An AC signal has a peak value of 100 V and a frequency of 60 Hz. If the voltage crosses zero in a rising direction at t=0 seconds, what is the instantaneous voltage at t = 0.004167
A CMOS inverter has its nMOS transistor in non-saturation and its pMOS transistor in saturation. Kn = 50A/V2, Kp = 25 ?A/V2, Vtn = 0.5 V, Vtp = -0.6 V, (W/L)n = 2, (W/L)p = 4, IDD = 11 A, and VDD = 2 V. Calculate the inverter output voltage VO.
If Nand gates are used throughoutand a ripple-carry design is used, calculate the delay through the adder, assuming all inputs are presented at the same instant, and counting D seconds per gate. Which output signal suers the worst delay.
A parallel circuit contains four branches with resistors values of 4.7k, 5.6k, 8.1k and 10k. Which branch has the largest current flow
The current through a branch in a linear network is 2 A when the input source is 10 V. If the voltage is reduced to 1 V and the polarity is reversed, the current through the branch is a. - 2 A b. - 0.2 A c. 0.2 A d. Cannot be determined with the in..
A full-wave bridge rectifier circuit with a 1-kohms load operates from a 120-V (rms) 60-Hz household supply through a 10-to-1 step-down transformer having a single secondary winding
An 8-bit shift register is used to convert a serial input to a parallel output. If a byte is received every 64 micro-second(us), what is the clock for the register
What are the Methods for Power Factor Improvement ? (with expalanation of every Method) and What is their Advantages and Disavantages ?
Design a simple unipolar drive circuit such that the electrical time constant is 2 msec at phase turn-on and 1 msec at turnoff. The stepping rate is 300 steps per second. A three-phase variable-reluctance stepper motor has parameters.
Two point charges of +3.0μF and -7.0μF are placed at x=0 and x=0.20m. What is the magnitude of the electric field at the midway point between them
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