Exam 2: Basic Theoriesspecial Tools and Procedures

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The figure  bel ow represents what type of circuit? The figure  bel ow represents what type of circuit?

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series

List Kirchhoff's two laws of voltage and current.

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Law of voltage states that the algebraic sum of all voltage drops and sources in a closed circuit equal zero-the sum of all voltage drops equal the source voltage.
Law of current states that the algebraic sum of the current entering and leaving a point equals zero. Total current flow in a parallel circuit is the sum of each of its branches currents.

What is the formula for Ohm's Law (in which E = volts, I = amperes, and R = resistance)?

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Voltmeter test leads are placed in parallel with the circuit.

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The total resistance of all the parallel loads is always more than the smallest individual resistance.

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All of the following concerning the use of jumper wires are true except:

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Technician A says the total amperage in a parallel circuit is equal to the sum of the individual branch circuits. Technician B says the amperage in a series circuit is the same anywhere in the circuit. Who is correct?

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Technician A says power is found by multiplying voltage times current. Technician B says power is expressed as wattage. Who is correct?

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Technician A says that an ammeter should be connected in parallel to the circuit being tested. Technician B says that an ammeter is used to measure current flow. Who is correct?

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Technician A says that a digital storage oscilloscope is like a very fast reacting volt meter. Technician B says the upward trace on a digital storage oscilloscope screen indicates a specific period of time. Who is correct?

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Technician A says that a logic probe may be used on computer controlled circuits. Technician B says that a logic probe may be used on a low voltage pulsed signal. Who is correct?

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Technician A says testing with a voltmeter can determine the voltage drop across the headlights. Technician B says a voltmeter can determine if excessive resistance is in the circuit. Who is correct?

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List three types of circuits and describe each.

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The figure below represents what type of circuit? The figure below represents what type of circuit?

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In a series circuit which of the following statements is correct?

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What is hertz a measurement of?

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What does an ammeter measure?

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Explain the term pulse width.

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What is frequency a measurement of?

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Where can you find information on fixes for problems?

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