ELECTRICITY FOR TRADES (LL W/ACCESS)
3rd Edition
ISBN: 9781260699487
Author: Petruzella
Publisher: MCG CUSTOM
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Textbook Question
Chapter 8.1, Problem 9RQ
What are the two configurations for chip resistors?
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Choose one of the choices indicated in the parentheses such as the following sentences have correct
messing
What is the main purpose of a communication system? a) To transmit information from one point
to another b) To amplify signals for better reception c) To filter out unwanted noise dy To generate
carrier waves for modulation
2. What the purpose of the modulator in a communication system? a) To generate the cares wave
for modulation b) To convert the information signal to a modulated signal c) To filter out unwanted
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Q1. Choose the correct answer:
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the spectrum range in the frequency domain.
2. A continuous FT indicates a signal. (continuous, discrete, periodic non-periodic).
the pulse duration is proportional to the amplitude of the signal. (PAM, PWM, PPM,
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ASK).
. In VSB transmission
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sideband and part of the other sideband, only the vestige of the carrier signal is used).
5. An economic FDM receiver design should contain
simultaneous reception, selective reception).
6. In AMI code, the shapes of "1" and "0" are
dependent, not related to each other).
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(pilot carrier zero crossing detector,
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20
3. Higher number of levels…
In a railway system with a power source of 600 VDC, I need to achieve a load output of 120 VDC for railway lights. I found a DC-DC converter capable of stepping down 600 VDC to 125 VDC. To obtain 120 VDC from this converter, we can use a voltage divider with the following equation: [R2/(R2+R1)]=120/125=0.96=0.96However, using resistors to achieve the desired output voltage raises some concerns. Is it advisable to use railway-grade resistors for this application? I found some resistors in the range of 1-10k ohms, but I am unsure how they should be connected in the circuit with the lights (the load to be used).
I would greatly appreciate any suggestions or schematic diagrams to clarify the best approach for connecting the resistors in this setup.
Chapter 8 Solutions
ELECTRICITY FOR TRADES (LL W/ACCESS)
Ch. 8.1 - In what way is resistance wire different from the...Ch. 8.1 - What is the trade name for the most popular type...Ch. 8.1 - Prob. 3RQCh. 8.1 - Name the three ways by which resistors are rated.Ch. 8.1 - Resistors are classified as passive devices. Why?Ch. 8.1 - Identify the type of circuit that generally...Ch. 8.1 - State two functions served by a fusible resistor.Ch. 8.1 - What advantage do film resistors have over...Ch. 8.1 - What are the two configurations for chip...Ch. 8.1 - In what way is the construction of an adjustable...
Ch. 8.1 - Compare the connection and control function of a...Ch. 8.1 - If the wiper arm of a linear potentiometer is...Ch. 8.1 - Explain how a 10-turn trim pot is adjusted.Ch. 8.1 - Compare the way the resistance varies in a linear...Ch. 8.1 - Identify the color bands for each of the following...Ch. 8.1 - A 680- resistor has a rated tolerance of 10...Ch. 8.1 - What is the color code for a 365- five-band...Ch. 8.1 - Determine the resistance value and percentage of...Ch. 8.1 - Determine the resistance value and percentage of...Ch. 8.2 - Calculate the total resistance for each of the...
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