Electrical Wiring Residential
19th Edition
ISBN: 9781337101837
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 3, Problem 12R
How many lighting branch circuits are provided in this dwelling? __________
- a. What is the minimum load allowance for small-appliance circuits for dwellings? See NEC 220.52(A). __________
- b. An individual 15-ampere branch circuit is run to the receptacle outlet behind the refrigerator instead of connecting it to one of the two 20-ampere small-appliance branch circuits that are required in kitchens. For this separate circuit, an additional 1500 volt-amperes (shall) (does not have to) be added to the load calculations for dwellings. (Circle the correct answer.)
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
What is the equivalent resistance of this circuit
between terminals A and B ?
m
1852
A
7_A
122 도
www
50
ти
B
ww
36 Ω
201
www
www
30√
3) A circuit is given as shown.
(a) Find and label the circuit nodes.
(6) Determine V2, V2, I₂, I₂ and Is
© For each circuit element determine how much power it
Supplies 15 absorbs.
m
20
+
20
www
13
+
20 Z9V
H
56
+1
LOV
1/2 1 4A
+
3_22
3.2
ми
+ V₂
I 1
In this experiment, we are going to use a 2N3904 BJT. Examine the data sheet for this device
carefully. In particular, make a note of the current gain (identified by hFE).
1. Obtain the curve trace for a "Darlington Pair" of Bipolar Junction Transistors. A Darlington
Pair consists of two transistors with the first BJT driving the base terminal of the second
transistor as shown in Figure 1 below.
A. Set up the primary sweep voltages for V1 the same as shown in the lecture notes (see
the Darlington pair IV curve).
B. Set up the secondary sweep currents for 11 to be an order of magnitude smaller than
for the single BJT. In the Sweep Type box choose linear and enter the following 3
values: Start Value: 0, End Value: 8u and Increment: 1u (see lecture notes).
C. Describe the primary differences you observe between the single BJT Curve Trace and
that of the Darlington Pair. Discuss what might cause each difference.
Q1
11
Q2
V1
Q2N3904
Figure 1. A Darlington Pair of 2N3904 transistors in a…
Chapter 3 Solutions
Electrical Wiring Residential
Ch. 3 - Prob. 1RCh. 3 - How are branch circuits rated? See NEC 210.3._____Ch. 3 - Prob. 3RCh. 3 - Prob. 4RCh. 3 - What spaces are not included in the floor area...Ch. 3 - What is the unit load per square foot for dwelling...Ch. 3 - According to NEC 210.50(C), a laundry equipment...Ch. 3 - How is the total load in volt-amperes for lighting...Ch. 3 - How is the total lighting load in amperes...Ch. 3 - How is the required number of branch circuits...
Ch. 3 - What is the minimum number of 15-ampere lighting...Ch. 3 - How many lighting branch circuits are provided in...Ch. 3 - Prob. 13RCh. 3 - How is the load determined for outlets supplying...Ch. 3 - What type of circuits must be provided for...Ch. 3 - Prob. 16RCh. 3 - In a single-family dwelling, how is overcurrent...Ch. 3 - Prob. 18RCh. 3 - The minimum number of outdoor receptacles for a...Ch. 3 - The Code indicates the rooms in a dwelling that...Ch. 3 - Prob. 21RCh. 3 - Prob. 22RCh. 3 - Prob. 23RCh. 3 - Prob. 24RCh. 3 - Prob. 25RCh. 3 - Although the Code contains many exceptions to the...Ch. 3 - The rating of a branch circuit is based on (Circle...Ch. 3 - a. A 25-ampere branch-circuit conductor is derated...Ch. 3 - Prob. 29RCh. 3 - Prob. 30RCh. 3 - Prob. 31RCh. 3 - Prob. 32RCh. 3 - A split-level home has one stairway that has six...Ch. 3 - Prob. 34RCh. 3 - Prob. 35RCh. 3 - Prob. 36RCh. 3 - In the past, it was common practice to connect the...Ch. 3 - If a residence has two bathrooms, the Code states:...Ch. 3 - Prob. 39RCh. 3 - Prob. 40RCh. 3 - Prob. 41RCh. 3 - Prob. 42RCh. 3 - Prob. 43R
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 2. Using the IV plots shown in Fig. 3 (and found in the reintroduction to PSpice) design a BJT biasing circuit that results in the following parameters: VCE = 2 Vand ig = 40 μA. We also require the power supply to be fixed at 5 Volts (this is where the load line intercepts the iB =ic = 0 line). You may use the circuit shown in Example 1. Note that all resistor values in Example 1 must be recalculated. Your solution for the base to ground and base to collector resistors may not be unique.arrow_forwardA circuit is given as shown. (a) Find and label the circuit nodes. (6) Determine I, I₁, I2 and V₂ I₂ +1 I 12V ww 22 2 ти + 보통 162 - ти 4 52 12 50 602 I 1 Mwarrow_forwarda) A silicon wafer is uniformly doped p-type with NA=10¹³/cm³. At T=0K, what are the equilibrium hole and electron concentrations?arrow_forward
- 1016 1015 Ge 101 Si 1013 1012 GaAs 10" (( uວ) uot¤ງແລ້ວuo ວາ.ຂ ວາsuuuT 0101 601 801 107 10% Determine the equilibrium electron and hole concentrations inside a uniformly doped sample of Si under the following conditions. (n; =1010/cm³ at 300K) a) T 300 K, NA << ND, ND = 1015/cm³ b) T 300 K, NA = 9X1015/cm³, ND = 1016/cm³ c) T = 450 K, NA = 0, ND = 1014/cm³ d) T = 650 K, NA = 0, ND = 1014/cm³ 10° 200 300 400 500 600 700 T(K)arrow_forwardb) A semiconductor is doped with an impurity concentration N such that N >> n; and all the impurities are ionized. Also, n = N and p = n2/N. Is the impurity a donor or an acceptor? Explain.arrow_forwardd) For a silicon sample maintained at T=300K, the Fermi level is located 0.259 eV above the intrinsic Fermi level. What are the hole and electron concentrations?arrow_forward
- e) In a nondegenerate germanium sample maintained under equilibrium conditions near room temperature, it is known that n=10¹³/cm³, n = 2p, and NA 0. Determine n and ND.arrow_forwardSolve fo the voltage across the 1kohm resistor using superposition for the three following cases: only V1 present, only V2 present, and both V1 and V2 present.arrow_forwardSemiconductor A has a band gap of 1eV, while semiconductor B has a band gap of 2eV. What is the ration of the intrinsic carrier concentrations in the two materials (n₁A/NB) at 300 K. Assume any differences in the carrier effective masses may be neglected.arrow_forward
- c) The electron concentration in a piece of Si maintained at 300K under equilibrium conditions is 105/cm³. What is the hole concentration?arrow_forward5. Represent the following system in state-space form. Write A, B, C and D clearly in your answer. d³y d²y dt3 - +5y=2u dt²arrow_forward3. Find the transfer function H(s) and frequency response H (w) of the following system whose differential equation is given by d¹y d³y +3. dy +5 dt4 dt3 dt - d²u du 4y = - 5 dt² dtarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning
What is an electric furnace and how does it work?; Author: Fire & Ice Heating and Air Conditioning Inc;https://www.youtube.com/watch?v=wjAWecPGi0M;License: Standard Youtube License