9. A 1500 W heating element at an initial temperature of 15°C is connected to a supply voltage of 115 v. After the temperature of the element has been stabilized (steady- state conditions), it is found that a voltage of 125 volts is required to maintain rated output. If the temperature coefficient of the element is 0.0006 per •c, determine the element's final temperature. e. 300°C 1. 205°C g. 290°C h. 317°C 10. Calculate the length of the copper wire having a diameter of 1/16 inches and resistance of 2 ohms.

9. A 1500 W heating element at an initial temperature of 15°C is connected to a supply voltage of 115 v. After the temperature of the element has been stabilized (steady- state conditions), it is found that a voltage of 125 volts is required to maintain rated output. If the temperature coefficient of the element is 0.0006 per •c, determine the element's final temperature. e. 300°C 1. 205°C g. 290°C h. 317°C 10. Calculate the length of the copper wire having a diameter of 1/16 inches and resistance of 2 ohms.

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

Similar questions

Please answer the following points in detail and rigorously. Instead ofresort to formulas, develop from basic principles (laws ofvoltages and currents, definition of electrical power, properties ofphasors, among others) a) Suppose that between the two terminals of an element there is a voltage v (t) and that through the terminal marked with a positive sign a current i (t). Show that if v (t) and i (t) are sinusoidal and are out of phase an angle θ, then the active power P which is consumed by this element is proportional to cosθ. b) How much is P for a pure inductor and how much for a capacitor pure? Does this make physical sense? c) When the power factor seen between two terminals is specified, Why is it necessary to indicate whether it is late or early? d) Show that the complex power consumed by two elements in parallel is the sum of the individual complex powers. After, repeat the procedure but for two elements in series. e) What meaning would you give to the P consumed by an…
The motor inside a blender can be modeled as aresistance in series with an inductance, as shown inFigure.a. What is the average power, PAV, dissipated in theload?b. What is the motor’s power factor?c. What value of capacitor when placed in parallelwith the motor will change the power factor to 0.9(lagging)?
What do you understand by Ferranti effect? Subject Power Transmission and Distribution
The average power consumed by a typical kettle with a heating element that has a pure resistance of 10Ω is 1200W. Calculate: a) the RMS current drawn by the kettle b) the peak value of the current through the element
A solid specimen of dielectric dielectric constant of 4.0, shown in the figure has an internal void of thickness 1mm. The specimen is 1cm thick and is subjected to a voltage of 80 kV(rms). If the void is filled with air and if the breakdown strength of air can be taken as 30 kV(peak)/cm, find the voltage at which an internal discharge
In U.S. residences, electrical power is generally utilized at a nominal voltage of 120 V rms. What problems would become pronounced if the power distribution system and household appliances had been designed for a lower voltage (say, 12 V rms)? For a higher voltage (say, 12 kV)?
a) Write down the expression of instantaneous voltage for an AC voltage having a Peak value of 220 Volts and a frequency of 50 Hz provided at time t=0, the instantaneous voltage is 220 Volts. What is the instantaneous voltage of the source at time “t = 5 seconds” What is its RMS voltage? b) Two 200Ω resistances are connected in series with one 0.5 H Inductance and two 100μF Capacitance with the power supply of part (a). (i)Draw the circuit diagram of the above network (ii)What is the total impedance of the circuit (iii)What is the max current that flows through the Inductance? (iv)What is the max current that flows through each of the Capacitance? (v)What is the power dissipated in the circuit (vi)What is the power factor of the circuit (vii)What is the resonance frequency of the circuit? (viii) What is the maximum power dissipated by the circuit when it is in resonance
160.C steam at 300kPa enters a nozzle at 90 m/s and expans reversibly and adiabatically, leaving at 1atm(100kPa). estimate the final velocity and assume steady state conditions.
A current of 4 A flows when a neon lightadvertisement is supplied by a 110-V rms powersystem. The current lags the voltage by 60◦. Find thepower dissipated by the circuit and the power factor.
1. An electrical circuit consist of a series connected resistor (100 ohms) and a coil with inductance of 50 H. If the initial DC source is 200 volts, solve for the current at 2 seconds. 2. A population of a small city had 3000 people in the year 2000 and has grown at a rate proportional to its size. In the year 2005 the population was 3700. Estimate the population of the city in 2006 and in 2010.
Answer the following points in detail and rigorously. Instead of resorting to formulas, develop from basic principles (laws of voltages and currents, definition of electrical power, properties of phasors, among others). f) Suppose you know P and Q for a two-terminal element. What is the power factor of this element? When would you be ahead and when would you be behind? g) Suppose you know the equivalent resistance R and the equivalent reactance X of a two-terminal passive network. What is the power factor of this network? When would you be ahead and when would you be behind?
Write the differential equation for t > 0 for iC in the given figure. Assume VS = 9 V, RS = 4 kohm, R1 = 11 kohm, and R2 = R3 = 20 kohm.