ELECTRICITY FOR TRADES (LOOSELEAF)
3rd Edition
ISBN: 9781260437454
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 6.1, Problem 9RQ
How are voltmeters connected relative to the circuit voltage that needs to be measured?
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How can you use a DMM to measure different characteristics of electrical components and circuits? Why are these measurements important?
Explain the loading effect on voltmeters and ammeters in detail.
(c) What device is used to extend the range of a DC voltmeter and how is it connected to the basic meter?
(d) Why is it necessary that an ammeter be a low resistance instrument? Why must a voltmeter be a high resistance instrument?
Chapter 6 Solutions
ELECTRICITY FOR TRADES (LOOSELEAF)
Ch. 6.1 - Explain how measurements are made using an analog...Ch. 6.1 - Prob. 2RQCh. 6.1 - Name the three basic metering functions that can...Ch. 6.1 - What is the purpose of the multimeter function...Ch. 6.1 - What is the purpose of the multimeter range...Ch. 6.1 - An analog voltmeter uses a single scale calibrated...Ch. 6.1 - Unlike analog multimeters, digital multimeters...Ch. 6.1 - Prob. 8RQCh. 6.1 - How are voltmeters connected relative to the...Ch. 6.1 - Digital voltmeters have little or no loading...
Ch. 6.1 - A digital multimeter is used to measure a DC...Ch. 6.1 - Define voltage drop.Ch. 6.1 - How are ground-referenced voltage measurements...Ch. 6.1 - State one advantage and one limitation of a...Ch. 6.1 - A noncontact voltage detector is to be used to...Ch. 6.1 - When measuring voltages and currents of unknown...Ch. 6.1 - How must ammeters be connected relative to the...Ch. 6.1 - Ammeters are required to have very low resistance...Ch. 6.1 - What is the advantage of taking a current reading...Ch. 6.1 - Explain how a clamp-on ammeter measures current...Ch. 6.1 - While attempting a voltage measurement across a...Ch. 6.1 - A clamp-on ammeter is to be used to determine the...Ch. 6.2 - What four basic components make up the internal...Ch. 6.2 - How is the pointer of an analog-type ohmmeter set...Ch. 6.2 - Series analog ohmmeters have nonlinear scales....Ch. 6.2 - What does a resistance reading of OL on a digital...Ch. 6.2 - A multimeter set to measure resistance is...Ch. 6.2 - When doing in-circuit component resistance...Ch. 6.2 - Explain the purpose of the multimeter continuity...Ch. 6.2 - An ohmmeter is connected across the two leads of a...Ch. 6.2 - Convert each of the following digital multimeter...Ch. 6.2 - Give an example of what might cause the occurrence...Ch. 6.2 - What energy-level category of multimeter is...Ch. 6.2 - A simple resistance measurement is made to test...Ch. 6.2 - What type of hand protection may be required when...Ch. 6.2 - Compare the input impedance of analog and digital...Ch. 6.2 - Define meter accuracy.Ch. 6.2 - Define meter resolution.Ch. 6.2 - What protection is afforded by the fuse connected...Ch. 6.2 - Prob. 18RQCh. 6.2 - The diode test function of a DMM is to be used to...Ch. 6.2 - Under what condition will true RMS and averaging...
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- On separate sheets of bond paper, draw and write the uses of voltmeter and ammeter.arrow_forwardHow to construct a voltmeter by galvanometer?arrow_forwardWhat is the purpose of multiplier resistors in a voltmeter? A. To extend the range of the voltmeter. B. To shunt current around the meter movement. C. To shunt voltage around the meter movement. D. To limit voltage at the input of the voltmeter.arrow_forward
- What are the possible advanced changes to the voltmeter in the future?arrow_forwardWhat is Vacuum tube voltmeter and name its type?arrow_forwardWhat is the formula used to find the peak voltage of 100 volts effective? A. Peak voltage = .707 x 100. B. Peak voltage = .9 x 100. C. Peak voltage = 1.414 x 100. D. None of the above.arrow_forward
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- Q1.) a) PMMC meter has (10mA) half scale current deflection and (1500) internal resistance. Use this meter to design a dc multimeter of indirect ammeter and direct voltmeter methods to measure the following ranges of current and voltage: 50mA, 100mA, 1A, 5V, 50V, and 150V. Draw the circuit diagram of this multimeter with a control switch that can be used to measure either current or voltage.arrow_forwardWhat is the maximum value of the potentiometer? And What project can do using potentiometer? Explain briefly.arrow_forwardA 50 μA basic D'Arsonval movement with an internal resistance of 500 is to be used as a voltmeter. The value of the multiplier resistance required to measure a full-scale voltage range of 0-5 volts is?arrow_forward
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