ENGINEERING CIRCUIT...(LL)>CUSTOM PKG.<
9th Edition
ISBN: 9781260540666
Author: Hayt
Publisher: MCG CUSTOM
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Chapter 2, Problem 52E
Utilize the fact that in the circuit of Fig. 2.39, the total power supplied by the voltage source must equal the total power absorbed by the two resistors to show that
You may assume the same current flows through each element (a requirement of charge conservation).
FIGURE 2.39
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A three-phase power supply system with the following specifications is available:
Type: Three-phase
Voltage: 22 kV
Frequency: 60 Hz
The system is to be used to charge a battery bank with the following characteristics:
Total Power: 56 kW
Nominal Voltage: 370 Vdc
Choke Coil Specifications:
Resistance (R): 0.7 Ω
Inductance (L): 0.8 H
Two scenarios need to be addressed:
Charging at Home:
Power: 7 kW
Voltage (AC): 220 Vac
Charging Station (Fast Charging):
Target Charge: 90% of 56 kW (50.4 kW)
Charging Time: 30 minutes (0.5 hours)
Task:
Design a controlled rectification system in Simulink that meets the above requirements for both scenarios. Include the appropriate power electronics components, transformer specifications, and any necessary control mechanisms.
Consider a single-phase power system shown below. The transformer is rated 100 kVA,14/2.4kV. The equivalent series impedance of the transformer, referred to the low-voltage side, is 0.12+j0.50Ω. The load is connected with 2.3kV on the lowvoltage side. (a) Calculate the voltage supplied from the source. (b) Compute the voltage regulation. (c) Compute the transformer efficiency. Ans. V~1=14.4∠3.5∘kV,VR=0.74%,η=0.97
Chapter 2 Solutions
ENGINEERING CIRCUIT...(LL)>CUSTOM PKG.<
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Ch. 2.4 - Prob. 12PCh. 2.4 - The power absorbed by the resistor if i = 3 nA and...Ch. 2 - Convert the following to engineering notation: (a)...Ch. 2 - Convert the following to engineering notation:...Ch. 2 - Prob. 3ECh. 2 - Prob. 4ECh. 2 - Convert the following to SI units, taking care to...Ch. 2 - Prob. 6ECh. 2 - It takes you approximately 2 hours to finish your...Ch. 2 - A certain krypton fluoride laser generates 15 ns...Ch. 2 - Your recommended daily food intake is 2500 food...Ch. 2 - An electric vehicle is driven by a single motor...Ch. 2 - Under insolation conditions of 500 W/m2 (direct...Ch. 2 - A certain metal oxide nanowire piezoelectricity...Ch. 2 - Assuming a global population of 9 billion people,...Ch. 2 - The total charge flowing out of one end of a small...Ch. 2 - Prob. 15ECh. 2 - The total charge stored on a 1 cm diameter...Ch. 2 - A mysterious device found in a forgotten...Ch. 2 - A new type of device appears to accumulate charge...Ch. 2 - The current flowing through a tungsten-filament...Ch. 2 - The current waveform depicted in Fig. 2.28 is...Ch. 2 - The current waveform depicted in Fig. 2.29 is...Ch. 2 - A wind power system with increasing windspeed has...Ch. 2 - Two metallic terminals protrude from a device. The...Ch. 2 - The convention for voltmeters is to use a black...Ch. 2 - Determine the power absorbed by each of the...Ch. 2 - Determine the power absorbed by each of the...Ch. 2 - Determine the unknown current for the circuit in...Ch. 2 - A constant current of 1 ampere is measured flowing...Ch. 2 - Determine the power supplied by the leftmost...Ch. 2 - The currentvoltage characteristic of a silicon...Ch. 2 - A particular electric utility charges customers...Ch. 2 - The Tilting Windmill Electrical Cooperative LLC...Ch. 2 - A laptop computer consumes an average power of 20...Ch. 2 - You have just installed a rooftop solar...Ch. 2 - Prob. 35ECh. 2 - Some of the ideal sources in the circuit of Fig....Ch. 2 - Prob. 37ECh. 2 - Refer to the circuit represented in Fig. 2.35,...Ch. 2 - Prob. 39ECh. 2 - Prob. 40ECh. 2 - Prob. 41ECh. 2 - Determine the magnitude of the current flowing...Ch. 2 - Real resistors can only be manufactured to a...Ch. 2 - (a) Sketch the current-voltage relationship...Ch. 2 - Prob. 45ECh. 2 - Figure 2.38 depicts the currentvoltage...Ch. 2 - Examine the I-V characteristics in Fig. 2.38....Ch. 2 - Determine the conductance (in siemens) of the...Ch. 2 - Determine the magnitude of the current flowing...Ch. 2 - A 1% tolerance 1 k resistor may in reality have a...Ch. 2 - Utilize the fact that in the circuit of Fig. 2.39,...Ch. 2 - For the circuit in Fig. 2.39, suppose that the...Ch. 2 - For each of the circuits in Fig. 2.40, find the...Ch. 2 - Sketch the power absorbed by a 100 resistor as a...Ch. 2 - You built an android that has a subcircuit...Ch. 2 - Using the data in Table 2.4, calculate the...Ch. 2 - Prob. 58ECh. 2 - Prob. 59ECh. 2 - Prob. 60ECh. 2 - The resistance values in Table 2.4 are calibrated...Ch. 2 - Prob. 62ECh. 2 - Prob. 63ECh. 2 - The network shown in Fig. 2.42 can be used to...Ch. 2 - Prob. 65ECh. 2 - An LED operates at a current of 40 mA, with a...Ch. 2 - You have found a way to directly power your wall...
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