Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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In a series-parallel circuit, components that are connected in parallel will
display characteristics of a(n) ________________.
a. | series circuit | c. | open circuit | b. | parallel circuit | d. | short circuit |
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2.
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In order to identify the series and parallel section of a combination circuit,
_____________.
a. | eliminate the parallel section | d. | All of the
above | b. | use a DMM | e. | None of the above | c. | trace the current
path |
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3.
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Which of the following is not one of of the seven general steps for solving a
combination circuit?
a. | Calculate the equivalent resistance for all parallel sections | c. | Calculate the total
current | b. | Calculate the total resistance of the circuit | d. | Calculate the RC time
constant |
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4.
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Which of the following is an application of a combination circuit?
a. | Commercial building’s lighting | d. | All of the
above | b. | Electrical outlets controlled by a switch | e. | None of the above | c. | Ceiling fan
control |
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5.
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Circuit that uses resistors to produce a voltage that is lower than the source
voltage is called a _______________.
a. | step-down transformer | c. | voltage divider | b. | reduction circuit | d. | voltage
converter |
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6.
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In order for a voltage divider to operate properly, the load resistance value
should be at least _____________ times greater than resistance value of the voltage divider
resister.
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7.
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Which of the following is an application of a variable resister?
a. | Radio volume controls | d. | All of the above | b. | Television controls | e. | None of the above | c. | Dim
lighting |
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8.
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A variable resistor is different from a fixed resister because
it___________.
a. | doesn’t have to be connected in a circuit to work | d. | All of the
above | b. | can be adjusted | e. | None of the above | c. | can be used only in AC
circuits |
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9.
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A short circuit in the branch of a parallel circuit will ______________.
a. | cause an excessive amount of current to flow | d. | All of the
above | b. | damage or destroy the power supply | e. | None of the above | c. | cause a short
circuit across the power supply |
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10.
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Which of the following is not a step for troubleshooting a parallel circuit to
find a short?
a. | Disconnect the power supply. | d. | All of the
above | b. | Look for visible signs of damage. | e. | None of the above | c. | Connect an ohmmeter
across the main line. |
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11.
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What is the result when a branch of a parallel circuit has an open?
a. | It has no effect on the circuit. | c. | The rest of the circuit will
operate with a reduced current. | b. | The circuit will not
operate. | d. | It will cause a
short to develop. |
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Matching
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Segment 1
a. | analyzing | e. | solving | b. | split | f. | trace | c. | combination | g. | resistance | d. | in series | h. | in parallel |
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12.
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A(n) _________ circuit contains elements of both a series circuit and a
parallel circuit.
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13.
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In order to identify the series and parallel sections of a combination circuit,
__________ the current path.
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14.
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The representation R1||R2 are ________.
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15.
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Identifying which components are in series and which are in parallel should be
the first step in ___________ a combination circuit.
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16.
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In a combination circuit, components connected _______ have the same current
flowing through them.
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17.
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The last step in solving a circuit is to make a summary of the volatage drops
and currents for each __________ to make sure they add up.
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18.
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The current will be _________ between the branches of the parallel section of a
combination circuit.
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19.
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There are seven general steps for _________ a combination circuit.
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Segment 2
a. | slider | e. | Switches | b. | variable | f. | rheostat | c. | ceiling
fan | g. | potentiometer | d. | dim |
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20.
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___________ can be connected in series, parallel, or combinations just like
loads.
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21.
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A(n) _________ often has a swithc to apply power to the circuit, a switch to
control the lights, and a switch to control the fan motor.
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22.
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A(n) ________ resistor can be manually adjusted.
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23.
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A(n) _______ is a variable resistor used primarily in high-power
circuits.
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24.
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A variable resistor most commonly used in low-power circuits is a(n)
______________.
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25.
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Depending on the position of the _________ on a variable resistor, the
resistance between it and either outside terminal will vary.
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26.
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A variable resistor can be used to ________ lighting in a home or
business.
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Segment 3
a. | ten | d. | bleeder | b. | voltage
divider | e. | different | c. | resistances |
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27.
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A(n) __________ network creates a voltage that is lower than the source
voltage.
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28.
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A loaded voltage divider network looks exactly like a firm or stiff network,
except the bleeder resistor is _________ time the resistance of the load resistor.
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29.
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To deal with the effects of changes in load, firm and stiff voltage dividers
are design so that the _______ resistor is much less than the load resistance.
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30.
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The main application of voltage divider networks is with electronic circuits
that need _______ voltage levels to operate.
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31.
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The firm and still voltage dividers are commonly used to supply voltage to
devices that have relatively high ___________.
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Segment 4
a. | parallel | e. | replacing | b. | increase | f. | main line | c. | three | g. | circuit | d. | shorted | h. | open |
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32.
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A short circuit acriss any branch of a(n) ___________ circuit causes the entire
circuit to be short circuited.
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33.
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Adding a fuse or a circuit breaker to the ________ of a parallel circuit will
help protect the components from damage.
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34.
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Eventually, short in a parallel circuit will cause a(n) ___________.
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35.
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There are _____ basic steps in troubleshooting a parallel circuit for
opens.
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36.
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An open in a branch of a parallel circuit will cause the effective resistance
to _________.
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37.
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In a series circuit, if a single component is ____________, the current
continues to flow through the rest of the circuit.
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38.
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In most cases, repairing an open in a circuit requires _________ a component
that has opened.
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39.
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If an open occurs in the main line, the _________ will not operate at
all.
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