EBK POWER SYSTEM ANALYSIS AND DESIGN
6th Edition
ISBN: 9781305886957
Author: Glover
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 3, Problem 3.22P
A balanced Y-connected voltage source with
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Can you help me achieve the requirements using
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requirements.
Q.2: Suppose you have two push buttons connected to ports (0 & 1) and four LED's connected to ports (6-9). Write
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Charge carrier concentration in doped semiconductor:
compensation
n = Na - Na
Na - Na >> ni
n-type
p = n₁²/n
2
if N₂ >> N₁, n = N₁_ and _p=n² / Na
d
p = Na-Nd
p-type
Na-Na >> n₁
d
2
n = n₁₂²/p
2
if N₁ >> N₁, p = N₁ and n = n² / Na
a
n-type
Dopant compensation: Examples
d
n = Na-N₁ = 4×10¹ cm¯
-3
++++++
n = 4×1016 cm-³
N=6×1016 cm-3
p=n/n=1020/4×1016 = 2.5×10³ cm
p-type
-3
p=Na-N₁ =8×10 −6×1016 = 2×10¹6 cm³
n=n²/p=1020/2×101 =5×10³ cm³
N2×1016 cm³
++++++
N=6x1016 cm-3
N = 8×1016 cm-3
p=2×1016 cm³
The resulting charge carrier concentration in compensated semiconductor
approximately equals the difference between the donor and acceptor concentrations.
Charge carrier concentration in n-type and p-type semiconductors
1. Calculate concentrations of electrons and holes at room
temperature in Si containing 2x1017 cm³ of donors and 8x1016
-3
cm³ of acceptors. Assume that Na, Nd >> n;.
αν
2. Calculate concentrations of electrons and holes at room
temperature in Ge containing 2x10¹7 cm³ of…
lonization energy of dopants in semiconductors
lonization energy of shallow donors and acceptors can be evaluated using
hydrogenic model:
lonization energy E Hion and orbital radius a, of hydrogen atom
Hydrogen Atom
moe4
EHion
= 13.6 eV a =
8ε²h²
Απερη
mee²
= 5.2918 x 10-11 m
lonization energy Eion and orbital radius D,A of donors
and acceptors
electron
m* e4
Eion
=
~50 meV
8K² &²h²
4πεερη2
"D,A
1 nm
m*e²
Orbit of an electron bound to a
donor in a semiconductor crystal.
Energy levels of donors and acceptors
Conduction Band
↓
Ec
-Ed
Donor Level
Donor ionization energy
Acceptor ionization energy
Acceptor Level
Εα
Ev
Valence Band
Ionization energy of selected donors and acceptors in silicon
Donors
Acceptors
Dopant
Sb
P
As
B
Al In
Ionization energy, Ec-Ed or Ea-E, (meV) 39
44
54
45
57
160
Hydrogenic model of donors and acceptors
Calculate the ionization energies and orbit radii of donors and acceptors
in Si and Ge.
Dielectric constant of silicon is k = 11.7.
Dielectric constant of…
Chapter 3 Solutions
EBK POWER SYSTEM ANALYSIS AND DESIGN
Ch. 3 - The Ohms law for the magnetic circuit states that...Ch. 3 - For an ideal transformer, the efficiency is (a) 0...Ch. 3 - For an ideal 2-winding transformer, the...Ch. 3 - An ideal transformer has no real or reactive power...Ch. 3 - For an ideal 2-winding transformer, an impedance...Ch. 3 - Consider Figure 3.4. For an ideal phase-shifting...Ch. 3 - Consider Figure 3.5. Match the following, those on...Ch. 3 - The units of admittance, conductance, and...Ch. 3 - Match the following: (i) Hysteresis loss (a) Can...Ch. 3 - For large power transformers rated more than 500...
Ch. 3 - For a short-circuit test on a 2-winding...Ch. 3 - The per-unit quantity is always dimensionless. (a)...Ch. 3 - Consider the adopted per-unit system for the...Ch. 3 - The ideal transformer windings are eliminated from...Ch. 3 - To convert a per-unit impedance from old to new...Ch. 3 - In developing per-unit circuits of systems such as...Ch. 3 - Prob. 3.17MCQCh. 3 - Prob. 3.18MCQCh. 3 - With the American Standard notation, in either a...Ch. 3 - Prob. 3.20MCQCh. 3 - In order to avoid difficulties with third-harmonic...Ch. 3 - Does an open connection permit balanced...Ch. 3 - Does an open- operation, the kVA rating compared...Ch. 3 - It is stated that (i) balanced three-phase...Ch. 3 - In developing per-unit equivalent circuits for...Ch. 3 - In per-unit equivalent circuits of practical...Ch. 3 - Prob. 3.27MCQCh. 3 - Prob. 3.28MCQCh. 3 - For developing per-unit equivalent circuits of...Ch. 3 - Prob. 3.30MCQCh. 3 - Prob. 3.31MCQCh. 3 - Prob. 3.32MCQCh. 3 - The direct electrical connection of the windings...Ch. 3 - Consider Figure 3.25 of the text for a transformer...Ch. 3 - (a) An ideal single-phase two-winding transformer...Ch. 3 - An ideal transformer with N1=1000andN2=250 is...Ch. 3 - Consider an ideal transformer with...Ch. 3 - A single-phase 100-kVA,2400/240-volt,60-Hz...Ch. 3 - Prob. 3.5PCh. 3 - Prob. 3.6PCh. 3 - Consider a source of voltage v(t)=102sin(2t)V,...Ch. 3 - Prob. 3.8PCh. 3 - Prob. 3.9PCh. 3 - A single-phase step-down transformer is rated...Ch. 3 - For the transformer in Problem 3.10. The...Ch. 3 - Prob. 3.12PCh. 3 - A single-phase 50-kVA,2400/240-volt,60-Hz...Ch. 3 - A single-phase 50-kVA,2400/240-volt,60-Hz...Ch. 3 - Rework Problem 3.14 if the transformer is...Ch. 3 - A single-phase, 50-kVA,2400/240-V,60-Hz...Ch. 3 - The transformer of Problem 3.16 is supplying a...Ch. 3 - Using the transformer ratings as base quantities,...Ch. 3 - Using the transformer ratings as base quantities....Ch. 3 - Using base values of 20 kVA and 115 volts in zone...Ch. 3 - Prob. 3.21PCh. 3 - A balanced Y-connected voltage source with...Ch. 3 - Figure 3.32 shows the oneline diagram of a...Ch. 3 - For Problem 3.18, the motor operates at full load,...Ch. 3 - Consider a single-phase electric system shown in...Ch. 3 - A bank of three single-phase transformers, each...Ch. 3 - A three-phase transformer is rated...Ch. 3 - For the system shown in Figure 3.34. draw an...Ch. 3 - Consider three ideal single-phase transformers...Ch. 3 - Reconsider Problem 3.29. If Va,VbandVc are a...Ch. 3 - Prob. 3.31PCh. 3 - Determine the positive- and negative-sequence...Ch. 3 - Consider the three single-phase two-winding...Ch. 3 - Three single-phase, two-winding transformers, each...Ch. 3 - Consider a bank of this single-phase two-winding...Ch. 3 - Three single-phase two-winding transformers, each...Ch. 3 - Three single-phase two-winding transformers, each...Ch. 3 - Consider a three-phase generator rated...Ch. 3 - The leakage reactance of a three-phase,...Ch. 3 - Prob. 3.40PCh. 3 - Consider the single-line diagram of the power...Ch. 3 - For the power system in Problem 3.41, the...Ch. 3 - Three single-phase transformers, each rated...Ch. 3 - A 130-MVA,13.2-kV three-phase generator, which has...Ch. 3 - Figure 3.39 shows a oneline diagram of a system in...Ch. 3 - The motors M1andM2 of Problem 3.45 have inputs of...Ch. 3 - Consider the oneline diagram shown in Figure 3.40....Ch. 3 - With the same transformer banks as in Problem...Ch. 3 - Consider the single-Line diagram of a power system...Ch. 3 - A single-phase three-winding transformer has the...Ch. 3 - The ratings of a three-phase three-winding...Ch. 3 - Prob. 3.52PCh. 3 - The ratings of a three-phase, three-winding...Ch. 3 - An infinite bus, which is a constant voltage...Ch. 3 - A single-phase l0-kVA,2300/230-volt,60-Hz...Ch. 3 - Three single-phase two-winding transformers, each...Ch. 3 - A two-winding single-phase transformer rated...Ch. 3 - A single-phase two-winding transformer rated...Ch. 3 - Prob. 3.59PCh. 3 - PowerWorid Simulator case Problem 3_60 duplicates...Ch. 3 - Rework Example 3.12 for a+10 tap, providing a 10...Ch. 3 - A 23/230-kV step-up transformer feeds a...Ch. 3 - The per-unit equivalent circuit of two...Ch. 3 - Reconsider Problem 3.64 with the change that now...Ch. 3 - What are the advantages of correctly specifying a...Ch. 3 - Why is it important to reduce the moisture within...Ch. 3 - What should be the focus of transformer preventive...
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- Can you help me achieve the requirements using Arduino? I have encountered some issues with these requirements. 1. Functionality:** The system must control 3 LEDS (Red, Green, and Blue) to produce at least 4 different lighting modes: a. **Mode 1: All LEDs blink simultaneously at 1-second intervals. b. Mode 2: LEDs blink in sequence (Red → Green → Blue) with a 500ms delay between each LED. c. **Mode 3:** LEDs fade in and out smoothly (PWM control) in the order Red Green → Blue. d. **Mode 4: Custom mode (e.g., random blinking or a pattern of your choice). 2. Constraints:** -Use only one push button to cycle through the modes. -The system must operate within a 5V power supply. -The total current drawn by the LEDs must not exceed 100mA. -Use resistors to limit the current through each LED appropriately. 3. Design Process:** -Analysis: Calculate the required resistor values for each LED to ensure they operate within their specified current limits. Synthesis: Develop a circuit schematic and…arrow_forwardnot use ai pleasearrow_forwardProcedure:- 1- Connect the cct. shown in fig.(2). a ADDS DS Fig.(2) 2-For resistive load, measure le output voltage by using oscilloscope ;then sketch this wave. 3- Measure the average values ::f VL and IL: 4- Repeat steps 2 & 3 but for RL load. Report:- 1- Calculate the D.C. output vcl age theoretically and compare it with the test value. 2- Calculate the harmonic cont :nts of the load voltage, and explain how filter components may be selected. 3- Compare between the three-phase half & full-wave uncontrolled bridge rectifier. 4- Draw the waveform for the c:t. shown in fig.(2) but after replaced Di and D3 by thyristors with a 30° and a2 = 90° 5- Draw the waveform for the cct. shown in fig.(2) but after replace the 6-diodes by 6- thyristor. 6- Discuss your results. Please solve No. 4 and 5arrow_forward
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