Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Chapter 11, Problem 4R
Outdoor luminaires directly exposed to the weather must be marked as (Circle the correct answer.)
- a. suitable for damp locations.
- b. suitable for dry locations only.
- c. suitable for wet locations.
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Chapter 11 Solutions
Electrical Wiring Residential
Ch. 11 - How many circuit wires enter the entry ceiling...Ch. 11 - Assuming that an outlet box for the entry ceiling...Ch. 11 - How many receptacle outlets and lighting outlets...Ch. 11 - Outdoor luminaires directly exposed to the weather...Ch. 11 - Prob. 5RCh. 11 - From left to right, facing the switches, what do...Ch. 11 - Who is to select the entry ceiling luminaire? ____Ch. 11 - When installing the wiring for a doorjamb switch,...Ch. 11 - The following layout is for Lighting Circuit A15,...
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- Light-emitting diodes (LEDs) are diodes made with III-V compound semiconductor materials such as aluminum gallium arsenide (AlGaAs), aluminum indium gallium phosphide (AlInGaP) or indium gallium nitride (InGaN), instead of silicon. The LEDs emit light when the device is operated under forward bias. LEDs of different colors have different turn-on voltages VD(on). For example: VD(on) : Red: ~ 1.6 V Yellow: ~ 1.7 V Green: ~ 1.8 V Blue: ~ 2.8 V White: ~ 3.8 V (a) Model these five LEDs with a simplified piecewise linear model (b) A rule of thumb is that it takes about 1 mA of current to “light” an LED while ~ 10 mA is needed for it to appear bright. Use the piecewise linear model for the LEDs, for the over-voltage indicator circuit to the right, find the values of Vin which will cause D1 or D2 to light (i.e. when ID1 or ID2 exceeds 1 mA).arrow_forwardConsider a fixed and updated instrumentation amplifier (where two resistors are lumped into one resistor), analyze the circuit if a common voltage source (VICM) is connected to two inputs. A₁ R₂ + R₁ R₂, RA www www R₁ R₁ www A3 X R₁ R₂ www www R₁₂ + Vo RA A2 V2 O- + R₂ 12 R₁arrow_forwardShow that the input impedance of a lossy transmission line of length L connected to a load impedance of Z is given by Z₁Cosh(yL) + ZoSinh(yL) Zin = Zo ZoCosh(YL) + Z₁Sihh(YL) ex Where Cosh(x) = and Sinh(x) = are the hyperbolic cosine and sine, respectively. 2 2arrow_forward
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