Basic Engineering Circuit Analysis
11th Edition
ISBN: 9781118992661
Author: Irwin, J. David, NELMS, R. M., 1939-
Publisher: Wiley,
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Chapter 7, Problem 26P
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The normalized far-zone field pattern of an antenna is given by
(sin cos²)
E =
0
00
and 0 ≤ ≤ π/2.
3/22 π
elsewhere
Find the directivity using
(a) the exact expression
In the sent soalation
Use Prad=2+1
7/2
Pre= 2 + 1 Sco³odo + 5 siño de
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2 Com from?
Pen and paper solution please with explaination not using chatgpt
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Basic Engineering Circuit Analysis
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- Q2. a) A three-phase 415 V, 4-pole, 50 Hz, A-connected induction motor was tested. The obtained results are: (i) (ii) No load test 50 Hz: Blocked rotor test, 10 Hz: DC test: Vnl=415 V, Pnl=1200 W, In=11 A Vbr 10 V, Pbr=1500 W, Ibr=91 A VDC 3 V, IDC=107 A Draw the per-phase equivalent electrical circuit of the motor Draw the circuits for no-load and block-rotor tests and indicate the slip for each of the tests. (iii) Identify the motor parameters (iv) Calculate the motor's starting torque at the rated voltage.arrow_forward4. Consider the RC circuit with a sinusoid voltage source shown in the diagram below. The values of the resistor, capacitor, input voltage amplitude and frequency are R-20012, C-5pF", Vo-10V, and w=500 rad/s, respectively. Assume that the circuit has reached steady state. Vрейте 2 The input voltage can be described using the complex sinusoid function V(t)-Vo and the physical voltage is obtained by taking the real part of V(t). The voltage drop across the capacitor is given by a sinusoid with same the frequency was the input voltage, but a different magnitude and different phase. In complex form, the capacitor's voltage is given by Vc(t)=1+jwRC For the following questions, use the template file Assignment TemplateQ2.m as the starting point for your MATLAB code. (a) (6 marks) Use MATLAB to make a graph that shows the real part of the input voltage source ReV(t)] and the real part of the voltage drop across the capacitor Re[Ve(t)] as a function of time. Choose the time scale so that two…arrow_forwardConsider the microgrid given in figure 8-56. The positive sequence impedance of the transmission Lines is given in -line diagram (figure 8.5%). The system data are as follows: the one PV generating Station: 2MW, 460V. AC, positive, negative and zero Sequence impedance of each line is equal to 10%. The generator negativ Sequence impedance is equal to the positive Sequence, and the Zero Sequence impedance is equal to half (½) of positiv Sequence impedance. Transformers positive sequence impedance is equal to the negative sequence and equal to the zero sequence impedance Station DC/AC CB Acpu bus CB www S+js 5 1+jlo M 2 T2 SB CB A Jus -3+16 local utilityarrow_forward
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