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You are working as an electrician in a large steel manufacturing plant, and you are in the process of doing preventive maintenance on a large DC generator. You have megged both the series and shunt field windings and found that each has over 10 M
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Delmar's Standard Textbook Of Electricity
- Electrical Engineering A cylindrical hollow pipe is made of steel (μr = 180 and σ = 4 x10^6 S/m).The external and internal radii are 7 mm and 5 mm. The length of the tube is 75 m.The total current I(t) flowing through the pipe is:I(t)= 8 cos(ωt) with ω=1200π rad/sDetermine:d) The intrinsic impedance of the good conductor. Remember that: Transcribed Image Text:η = = √2/45° σ·δarrow_forwardGiven a series circuit consisting of a DC voltage source, resistor, capacitor, inductor, and switch which closes at t=0. All elements are initially uncharged. If V=4 volts, R=64 Ohms, C=1/520 Farads, and L=8 Henries, Determine the circuit current (A,B,H,D): i(t)=Aexp(-Bt)sin(Ht+D) amps.arrow_forwardThe initial energy in the circuit is zero. The ideal voltage source is 120u(t)V. 1. a) Find I(s). 2. b) Use the initial- and final-value theorems to find i(0+) and i(∞). 3. c) Do the values obtained in (b) agree with known circuit behavior? Explain. 4. d) Find i(t).arrow_forward
- Determination Vth, Determination Rth, Thevenin equivalent circuit, Maximum Power.arrow_forwardGiven the following values V1 = 12V , V2 = 5V , R1 = 10Ω, R2 = 5Ω, R3 = 10Ω, C1 = 2C2 = 4µF and C3 = 6µF. 1. Calculate the complete response of the voltage va for all tarrow_forwardIn the circuit of Fig. 6.34, i(t)=0.6e^-2t. If i(0) = 1.4 A, find: (a) i2(0) (b) i2(t) and i(t) (c) v1 (t), v2 (t), and v(t).arrow_forward
- We need to implement a simple voting system for a company. This company has a board composed of three directors having different voting weights as follows; a motion passes if it gets more than 50% of votes: Director A: 20% Director B: 30% Director C: 50% Design a circuit that implements this voting system. Supposing the output of the circuit is named V, in order to design this system you need to do the following: Make a truth table for V. [12%] Express V as a sum of products. [8%] Simplify V, either algebraically or by an explanation based upon the truth table. [15%] Draw the simplified circuit for V. [15%]arrow_forwardthe initial energy stored in the circuit is zero. At t = Os the switch is closed and a DC current source of Is = 20mA is applied to the circuit. Given the following values: R = 100, L = 200mH, & C = 500gF. a) Calculate the step response IL (t) for t (greater than equalto) Os as a simplified numerical function of time b) sketch the plot for IL (t) for 0(less than euql to ) t (greater than equal to ) 100ms,arrow_forwardThe switch in the circuit below has been closed for several minutes. It is finally thrown open at t = 0. (a) Compute the circuit time constant. (b) Obtain an expression for vL(t) and iL(t) valid for t > O, then find the values of both vL(t) and iL(t) at (a) t=0 sec (b) 1 msec. * 20 kQ) 3k SHE O 10 k)arrow_forward
- evaluate the circuitarrow_forwardCan you please provide and explanation on how to use superposition to solve this problem?arrow_forward) Below, the circuit given in Figure 1 will be analyzed in the s definition region.a) Obtain node equations and additional equations for the specified nodes.b) VRy (t) for R1 = 1Ω, RY = 1Ω, e (t) = βu (t), C = 2F, L = 1H, vc (0) = 1V, iL (0) = 2ACalculate the voltage.β=8,a=3arrow_forward
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