38. An electric resistor, R = 0.1 in, is steadily generating heat at a rate of 4" SE7 Btu/h-ft'. The centerline temperature is maintained at 300 F, find surface temperature, surface heat flux, and ģ'. k = 50 Btu/ft-h-F. [Ans.: T, = 282.6 F, ģ* = 2.1E5 Btu/h-ft, and ģ' = 3.2 kW/ft].

38. An electric resistor, R = 0.1 in, is steadily generating heat at a rate of 4" SE7 Btu/h-ft'. The centerline temperature is maintained at 300 F, find surface temperature, surface heat flux, and ģ'. k = 50 Btu/ft-h-F. [Ans.: T, = 282.6 F, ģ* = 2.1E5 Btu/h-ft, and ģ' = 3.2 kW/ft].

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: A pure element is connected across an AC signal. CH1 and CH2 measures the voltage and current,…

Q: constant inductance of one henry and a variable resistance R are connected in series with a constant…

Q: 3. (a) A copper-constantan thermocouple with temperature of one junction is 100 °C and another…

Q: An aluminum wire has resistance of 80 ohms at 30 degree Celsius. And determine its resistance when…

Q: k)A coil consists of 2000 turns of copper wire having a cross-sectional area of 0.8 mm². The man…

A: No> of Turns= 2000 Length per turn = 80 cm Area=0.8 mm2 Resistivity of copper =0.02 micro ohm-…

Q: A moving coil mili voltmeter has a resistance of 20 ohm and full scale deflection of 120 degrees is…

A: Givenresistance of voltmeter=20 Ωdeflection=120°potential difference=100 veffective…

Q: flux of 8 mWb links with a 1020 turns coil and the inductance of 3 H. The value of energy stored…

Q: The current in a coil with 200 turns required to establish a flux of 20Wb in the middle section of…

Q: Load Shape Load Outside Diameter Length of Load to Heat Solid or Hollow Wall thickness Heating Goal…

A: Given current: 31 A voltage 42V Induction coil measurement: It has 1/8” OD and 0.03” wall…

Q: what is process leads to lowering the number of free electrons? what is The Townsend's Criterion why…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Seau 3: For the electromegnet given on the side ; lgare the leahage nduchance an answer the pollouy…

Q: What is dimensional formula of conductivity ,it's unit and answer in well manner step wise and also…

A: The dimensional formula for conductivity is derived as given below, P=i2R P=i2ρlA On rearranging,…

Q: Use the following constants if necessary. Coulomb constant, k – 8.987 x 10° N - m² /C?. Vacuum…

Q: Problem 2.11: In the magnetic circuit shown in Figure 2.68, the number of turns N is 1,000, the…

A: Given Number of turns =N=1000 Current through coil ,i=cos50000t Cross sectional area of core , A =1…

Q: Q8/ A piece of copper as shown in Figure below has an inner radius of 6 cm, radial thickness of 3 cm…

Q: Assist

Q: The force that generates a flow of electricity is sometimes called Pressure O Conductor D Velocity…

Q: 14. Determine all of the branch currents for the circuit shown in Figure 3.6.9 assuming E is a 1…

Q: 6) What effect will having more induced current in more loops have on the total current in the…

A: When multiple loops are formed, the multiple loop device is called inductor (L). Let ϕ =flux B=…

Q: b-Two aluminum and copper wire resistors consume 0.5 W when connected in parallel to 2 V DC supply.…

Q: A carbon brush used to conduct current from the commutator of a DC generator has a length of 4 in.…

A: Find the cross sectional area of carbon brush. If current flow = 400 A Voltage not exceed = 2V…

Q: P KN Refer to the figure. d₁ 0.9 m Force P is 60 kN and each force Q is 125 kN. Q KN Add your answer…

A: The objective of the question is to calculate the normal stress in rod AB. Normal stress is the…

Q: A) The apparent power for an electric network was measured and found to be 360.6VAL- 56.34. 1.…

A: Hello. since you have posted multiple questions and not specified which question to solve. We will…

Q: An inductance of L henrys and a resistance of 10 ohms are connected in series with voltage of 100…

Q: A negative charge q'is located as shown in the figure: a. I- What is the direction of the electric…

A: Given figure,

Q: Sketch a graph of the voltage vs time for a 10V DC voltage

Q: Consider the large inductor in Figure 3 with given number of turns N, core permeability μ, core…

A: Nearly how long will it take the inductor to fully charge (i.e., reach steady-state)? 1) 1.5 sec 2)…

Q: Answer the following questions below with 2-3 sentences: 1. How Piezoelectric Effect Works? 2. What…

A: The capacity of some materials to create an electric charge in response to mechanical stress is…

Q: 4. Find the net potential (voltage) at pt. p produced by the charges as shown in the figur Q8= +1uC…

A: Figure is given as,

Q: In the figure above a = 14 cm, b = 16 cm. The current in the long straight wire is given by i =…

Q: B) Define the permeability (ur) of the material. If you are required to design 1H and IpH inductors,…

A: Permeability of a material μ: Permeability is the property of a material that allows the magnetic…

Q: Problem A potentiometer is an instrument for measuring an unknown voltage in comparison to a…

A: The potentiometer is an important measuring instrument that measures the unknown voltage across the…

Q: Notes on the verification of ohm's law by voltage method?

A: Current" typically refers to the flow of electric charge in a circuit. It is measured in Amperes (A)…

Q: A current of - 8 + 62-V (sin (wt + 30°)) A is passed through three meters. The respective readings…

Q: Consider the large inductor in Figure 3 with given number of turns N, core permeability μ, core…

Q: A flux of 0.0016 Wb flows in a silicon sheet steel coil/core. The arrangement appears as shown below…

Q: Core - PM Ntums In the system in the figure, magnet NDFEB, Br31.25 T, Hc=-900 kĀ/m, N=100, i=20 A,…

A: According to guidelines we need to solve only the first three sub-parts. According to the…

Q: An inductance of 2 henries and a resistancc of 20 ohms are connected in series with an emfE volts.…

A: E=100 V DC Find i (t=0.01)

Q: B. 1 of 1 An iron core 0.4 m long and 5 square cm. in cross section, is wound with 300 turns. When a…

Concept explainers

Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.

Question

38. An electric resistor, R = 0.1 in, is steadily generating heat at a rate of 4"
SE7 Btu/h-ft'. The centerline temperature is maintained at 300 F, find surface
temperature, surface heat flux, and ģ'. k = 50 Btu/ft-h-F. [Ans.: T, = 282.6 F,
ģ* = 2.1E5 Btu/h-ft, and ģ' = 3.2 kW/ft].

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

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

Where is electrical energy stored in an inductor? O In the electric field surrounding its coils. O In the magnetic field surrounding its coils. O In both the electric and magnetic field surrounding its coils. O An inductor never stores electrical energy.
A potential difference of 240 V is applied to a field winding at 15 °C and the current is 4.8 A. What will be the mean temperature of the winding, in °C, when current has fallen to 3.6264 A, applied voltage being constant. Assume α = 1/254.5 at 15 °C.
Please answer in typing format for like
1) In a certain circuit battery is draining out 5 times more quickly than expected for normal operation what could be the possible cause for this and how did you conclude it. 2) Why AC current is preferred over DC current for high power electrical circuits. 3) Initial current across a capacitor connected across a DC source is huge and initial voltage is zero, explain why this is so. 4) Explain the working of AC generator in your own words. 5) In a Wheatstone bridge circuit a student connects a motor in place of galvanometer and is trying to find unknown resistance using formula when he adjusts variable resistor and observes that motor is no more rotating. Do you agree with his technique or not explain with reasoning. 6) What does a negative value of loop current indicates in Mesh Analysis and Method of Branch Currents, and also comment on if there a way to avoid this negative sign appearing for loop current's value.
b. A piece of pencil lead is connected in series with an ammeter and a power supply. The power supply is turned on. After a few minutes, although the potential difference across the pencil lead does not change, the current in the circuit increases significantly. Explain why the current increases. c. Electric fields are caused by both point charges and by parallel plates with a potential difference across them. Describe the difference between the electric field caused by a point charge and the electric field between parallel plates. Your answer should include a diagram of each type of field and reference to electric field strength. Question 2
Q9: Find the resultant force on charge qy as shown in the figure if q=2 µC, q: = 3µC and q, 4uC? Fa
0.1 Give a short answer for only Six of the following 1. Explain the construction of turbine meter and mention for what we use it. 2. Mention the Applications of Pyroelectric sensors. 3. Explain briefly Hall effect sensor's application by measuring the fluid level in a container. 4. Explain how could we use potentiometer to measure linear displacement and angular displacement. 5. According to electrical circuits and electric fundamentals what's the evident difference between Eddy current proximity sensor and Inductive proximity sensor? 6. What's the purpose of putting an inner track with only one hole in optical sensor? 7. What's the reason behind using Wheatstone bridge with strain gauge sensor?
Explain in detail Hydro Electricity CurrentElectricity SolarElectricity
Q8/ A constant potential difference of 250 V is applied to a field winding at 15 °C and the current is 5 A. What will be the temperature of the winding when the current has fallen to 3.91 A. Assume a15=1/254.5 °C!. 86 °C
The resistance of the copper field winding of a DC machine at 40 deg. C is 0.40 ohms. After operating for some time, the resistance is found to be 0.50 ohms. Find the operating temperature temperature.
SOLVE COMEPLETELY INCLUDE FIGURE
Q.3: For the magnetically coupled the values of coupling coeff.cuit shown, find "k" when the power at 100 resistance is equal to (40W) if Vs=5020°V. (Ans.: 0.279) Vs K J692 J752 4.6792 ww 592 109