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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.
Two 10.0 ohm resistors are connected in parallel, and this combination is connected in series with a third 10.0 ohm resistor. The resistance of this network is
The DC shunt motor is running at full load with a supply voltage of 440 V and a supply current of 70 A. The rotation speed in full load is 1000 rpm, the field resistance is 200 Ohm and the armature resistance is 0.2 Ohm.
The distribution line connecting the source to the load has negligible impedance. Load 1 is purely resistive and absorbs 60 kW. Find the per-phase impedance of load 2 if the line voltage is 415.69V(rms) and the impedance components are in series.
1. What does "transfer function" of a filter represent 2. What do the Amplitude Ratio (Gain) and Phase Angle represent 3. What are the key differences between a real filter (the RC circuit) and an Ideal Filter (please read LPF Treated as an Ideal F..
calculate the average signal-to-noise (SNR) in decibels (dB) Assume equal numbers of binary 0s and 1s.
Steel rods AB and BC each have a diameter of 5 mm. If the load of p= 2 kN is applied to the ring, and if ? = 60°, determine the following:
An electric ventricular assist device (EVAD) that helps pump blood concurrently to a defective natural heart in sick patients can be shown to have a transfer function G(s) = Pao(s)/Em(s) =1361/ s2 + 69s + 70.85 The input, Em(s) is the motor's armatur..
A priority decimal-to-BCD encoder has active-LOW inputs andoutputs. If there are LOWs only on decimal inputs 2, 5, and 8, what BCD code appears on the outputs
Use superposition ONLY and find the value Vab• (Hint: For each stage, redraw the circuit in conventional form:for example, voltage source-resistor network, or current source-resistor network).
Two parallel plates separated by 0.20 m are connected to a 12volt battery. An electron released from rest at a location 0.10 mfrom the negative plate. when the electron arrives at a distance0.050 m from the positive plate
1) For a semiconductor E vs kx near the band edge Ec is given by E=Ec +(h2/16m0)*kx2 Determine the effective mass of electrons in the conduction band. Here m0 is the mass of a free electron. 2) E vs. kx for electrons near the valence band edge Ev can..
Consider a permanent-magnet dc-motor with the following parameters: Ra=0.35Ohms, La=1.5mH, Ke=0.5V/(rad/s), Kt=0.5Nm/A, and Jm=0.02kgm^2. The rated torque is 4Nm. This motor is supplies by a switch-mode dc-dc converter
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