Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 8, Problem 30P
A common frequency for alternators on aircraft is 400 Hz. How many poles does a 400 Hz alternator have if the speed of rotation is 3000 rpm?
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"Can you explain the integration method to show
the result?"
The radiation intensity of an aperture antenna, mounted on an infinite ground plane
with perpendicular to the aperture, is rotationally symmetric (not a function of 4),
and it is given by
U =
π sin
Find the approximate directivity (dimensionless and in dB) using
(a) numerical integration. Use the DIRECTIVITY computer program at the end of this
chapter.
U
sin ( sin )
sin
(a)
Directly
Do = 14.0707
= 10log (14.0707)
= 11.48 dB
Don't use ai to answer I will report you answer
complete the table in the attached photos. instructions are below the table
Chapter 8 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 8 - The period of a 60 Hz sine wave is 16.7 ms.Ch. 8 - The rms and average value of a sine wave are the...Ch. 8 - Prob. 3TFQCh. 8 - The peak value of a sine wave is the same as its...Ch. 8 - The number of radians in 360 is 2 .Ch. 8 - In a three-phase electrical system, the phases are...Ch. 8 - The purpose of an exciter is to supply dc rotor...Ch. 8 - In an automotive alternator, the output current is...Ch. 8 - Prob. 9TFQCh. 8 - A synchronous motor can be used when constant...
Ch. 8 - Prob. 1STCh. 8 - During each cycle, a sine wave reaches a peak...Ch. 8 - A sine wave with a frequency of 12 kHz is changing...Ch. 8 - Prob. 4STCh. 8 - When a sine wave has a frequency of 60 Hz, in 10 s...Ch. 8 - Prob. 6STCh. 8 - Prob. 7STCh. 8 - The average value of a 10 V peak sine wave over...Ch. 8 - Prob. 9STCh. 8 - Prob. 10STCh. 8 - The instantaneous value of a 15 A peak sine wave...Ch. 8 - If the rms curren through a 10k resistor is 5 m A,...Ch. 8 - Prob. 13STCh. 8 - Prob. 14STCh. 8 - Prob. 15STCh. 8 - Prob. 16STCh. 8 - Prob. 17STCh. 8 - Prob. 1TSCCh. 8 - Prob. 2TSCCh. 8 - Prob. 3TSCCh. 8 - Prob. 4TSCCh. 8 - Prob. 5TSCCh. 8 - Calculate the frequency for each of the following...Ch. 8 - Calculate the period for each of the following...Ch. 8 - A sine wave goes through 5 cycles in 10s. What is...Ch. 8 - A sine wave has a frequency of 50 kHz. How many...Ch. 8 - How long does it take a 10 kHz sine wave to...Ch. 8 - A sine wave has a peak value of 12 V. Determine...Ch. 8 - A sinusoidal current has an rms value of 5 mA....Ch. 8 - For the sine wave in Figure 8-74, determine the...Ch. 8 - If each horizontal division in Figure 8-74 is 1...Ch. 8 - In Figure 8-74, what is the instantaneous voltage...Ch. 8 - Sine wave A has a positive-going zero crossing at...Ch. 8 - One sine wave has a positive peak at 75 and...Ch. 8 - Draw two since waves as follows: Sline wave A is...Ch. 8 - Convert the following angular values from degrees...Ch. 8 - Convert the following angular values from radians...Ch. 8 - A certain sine wave has a positive-going zero...Ch. 8 - For a particular 0 reference sinusoidal current,...Ch. 8 - For a 0 reference sinw wave with an rms value of...Ch. 8 - Sine wave A lags sine wave B by 30. Both have peak...Ch. 8 - Repeat Problem 19 for the case when sine wave A...Ch. 8 - A sinusoidal voltage is applied to the resistive...Ch. 8 - Find the half-cycle average values of the voltages...Ch. 8 - Determine th rms voltage across R3 in Figure 8-77.Ch. 8 - A sine wave with an rms value of 10.6 V is riding...Ch. 8 - How much dc voltage must be added to a 3 V rms...Ch. 8 - A 6 V peak sine wave is riding on a dc voltage of...Ch. 8 - The conductive wire loop on the rotor of a simple...Ch. 8 - Prob. 28PCh. 8 - At what speed of rotation must a four-pole...Ch. 8 - A common frequency for alternators on aircraft is...Ch. 8 - Prob. 31PCh. 8 - Explain how the field in a three-phase motor...Ch. 8 - From the graph in Figure 8-78, determine the...Ch. 8 - Determine the duty cycle for each pulse waveform...Ch. 8 - Find the average value of each positive-going...Ch. 8 - What is the frequency of each waveform in Figure...Ch. 8 - What is the frequency of each sawtooth waveform in...Ch. 8 - A square wave has a period of 40s. List the first...Ch. 8 - What is the fundamental frequency of the square...Ch. 8 - Determine the peak value and the period of the...Ch. 8 - Determine the rms value and the frequency of the...Ch. 8 - Determine the rms value and the frequency of the...Ch. 8 - Find the amplitude, pulse width, and duty cycle...Ch. 8 - A certain sine wave has a frequency of 2.2 kHz and...Ch. 8 - Figure 8-84 shows a sinusoidal voltage source in...Ch. 8 - A nonsinusoidal waveform called a stairstep is...Ch. 8 - Refer to the oscilloscope screen in Figure 8-86....Ch. 8 - Accurately draw on a grid representing the scope...Ch. 8 - Accurately draw on a grid representing the scope...Ch. 8 - Based on the instrument settings and an...Ch. 8 - Examine the circuit board and the oscilloscope...Ch. 8 - Prob. 52PCh. 8 - www. prenhall.com/floyd. 53. Open file P08-53 and...Ch. 8 - www. prenhall.com/floyd. 54. Open file P08-54 and...Ch. 8 - www. prenhall.com/floyd. 55. Open file P08-55 and...Ch. 8 - www. prenhall.com/floyd. 56. Open file P08-56 and...
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