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A potential field in free space is given in spherical coordinates as
where p0 and are a constants. (a) Use Poissor’s equation to find the volume charge density everywhere, (b) Find the total charge present.
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Chapter 6 Solutions
Engineering Electromagnetics
- . Find the value of Δ (step size) that minimizes the Slope Overload for a Delta Modulation (DM) system where the input is a Sinusoidal with a frequency ranging from 400 Hz to 4000 Hz, sampled at 10 times the minimum Nyquist Rate. Assume an Amplitude of the Sinusoid as unity.arrow_forward. In a PCM system, what is the minimum size memory (in BYTES) required to store 10 minutes of a sampled and quantized voice signal assuming Signal-To-Noise Ratio is 40 dB (round up the number of bits), and sampling rate of 8000 samples per second.arrow_forwardAccording to the book the answers are (a) Total number of memory bits = 48,000. (b) Complexity = 1504.arrow_forward
- T 2- The LTI system defined by the impulse response h(n) = 0.8" u(n) is: (a) Stable and Non-casual (b) Unstable and Non-casual (b) Unstable and Casual (d) Stable and Casual 3- The Fourier transform of e-ist П13 (t-2) is (a) e-12(w-5). sin (3(-5) 2 3(8-5) 2 sin(3(w+5) (c) e-j2(w+5). 2 +00 3(w+5) 2 4- sgn(t + 1)6(t − 1)dt =? - (b) e-15(w+5) sin(3-2) 3(0-2) 2 (d) e/2(w+5) sin(3(+5) 2 3(w+5) (a) 1 (b) -1, (c) 2, (d) -2arrow_forwardHomework: The open-loop transfer function of DC Motor is shown in equations (1), where the rotational speed is considered as the output and the armature voltage as the input, (J) is the moment of inertia of the rotor, (b) is the viscous friction constant of the motor, (La) is the electrical inductance, (Ra) is the electrical resistance and (V) is the voltage source, with a setpoint of 2000 rpm e(s) K₁ G(s)=(s) = (j.s+b)(La.s+ Ra) + K₁ × Kɩ rad/sec, sec (1) Parameters Torque constant (Kt) Value Electromotive force constant (Kb) Electrical resistance (Ra) Viscous friction constant of the motor (b) 0.008 N.m/rad/s Electrical inductance (La) Moment of inertia of the rotor (J) 0.5 N.m/A 1.25 V/rad/s 502 0.2 H 0.1 kg.m² Table 1: Parameters of the DC motor Design Speed Control of DC Motor Using PID Controller, and then obtain Overshoot, Rise time, Steady state error, and Settling timearrow_forwardA. Explain the mode of operation for complementry commutation circuit. Find the circuit turn off time if the load resistances R1-R2-5 2 capacitance C-7.5 μF, V-100 volts. ng tu Iarrow_forward
- **3- In the following transistor amplifier circuit, assuming that:** **3-1- Calculate the operating point of the transistor (values of its continuous currents and voltages).** **3-2- Draw the equivalent circuit of the amplifier for small signals.** **3-3- Calculate the input resistance \( R_{in} \).**arrow_forward. Given the following complex circuits. Solve for the Voltage drop at the Capacitive load in the circuit using the subsequent analyses NORTON, and THEVENIN'S THEOREM.arrow_forward11:04 PM P T "168 76 EEE 316-Electr...chines | PQ..pdf K/S Phoenix Files 4th September, 2023. INSTRUCTIONS: Answer FIVE (5) QUESTIONS, DURATION: 3 HOURS QUESTION ONE: 1a) What is electromechanical energy conversion. (3 Mark: 1b) Explain the following terms: permanent magnets and non-permanent magnets (5 Mark: 1c) A short shunt generator delivers 45A at 240V and the resistance of the shunt field and armature: 500 and 0.030 respectively. Calculated the generated emf. (6 Marks QUESTION TWO: 2a) 2b) Energy can never be created or destroyed", discuss with examples Why is the air-gap very important in electromechanical systems. (4 Marks (4 Marks, 2c) A short shunt generator delivers 450A at 240V and the resistance of the shunt field and armature are 500 and 0.030 respectively. Calculated the generated emf. (6Marks) QUESTION THREE: 3a) 3b) List and explain the two types of armature windings mostly used in DC machines. Differentiate between electromechanical devices and machines with examples.…arrow_forward
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