Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
1.
|
Which of
these is a possible voltage source: a. | pressure, | b. | friction, power, chemical, heat, magnetism,
oil. | c. | chemical
reactions | d. | heat | e. | all of these | | |
|
|
|
2.
|
The
mechanism for producing electrical energy in batteries is: a. | hydroelectricity. | c. | magnetism. | b. | chemical. | d. | atomic energy. | | | | |
|
|
|
3.
|
A cell
consists of three parts named the: a. | nominator, cathode, anode. | c. | anode, cathode, electrolyte. | b. | case, terminator,
electrolyte. | d. | cathode, electrolyte,
resistor. | | | | |
|
|
|
4.
|
Solar cells
require what to operate: a. | electricity. | c. | light. | b. | heat. | d. | chemicals. | | | | |
|
|
|
5.
|
Chemical
based batteries are popular because they are: a. | inexpensive. | c. | rechargeable. | b. | portable. | d. | all of
these. | | | | |
|
|
|
6.
|
Alkaline
batteries are better than carbon-zinc batteries because they are: a. | less
expensive. | c. | more stable in their
output. | b. | lighter in weight. | d. | rechargeable many times. | | | | |
|
|
|
7.
|
Lithium
batteries are better than carbon-zinc batteries because they are: a. | more
powerful. | d. | cheaper | b. | more efficient. | e. | all of these except d | c. | exhibit long shelf
life. | | | | |
|
|
|
8.
|
The
principal difference between a primary cell and a secondary cell battery is: a. | one is less
expensive. | c. | one is
rechargeable. | b. | one is lighter in weight. | d. | one is more portable. | | | | |
|
|
|
9.
|
A secondary
cell battery can be recharged by: a. | adding distilled water. | c. | applying a reverse voltage. | b. | adding
electrolyte. | d. | replacing the
electrodes. | | | | |
|
|
|
10.
|
Batteries
are rated in: a. | volts. | c. | ampere-hours. | b. | amps. | d. | all of these. | | | | |
|
|
|
11.
|
The negative
terminal of any battery is called the: a. | cap. | c. | anode. | b. | cathode. | d. | can. | | | | |
|
|
|
12.
|
Cell and
batteries can be connected together in: a. | parallel. | c. | series. | b. | series-parallel. | d. | all of these. | | | | |
|
|
|
13.
|
When cells
and batteries are connected in series: a. | total voltage increases. | c. | total current increases. | b. | total voltage
decreases. | d. | total current
decreases. | | | | |
|
|
|
14.
|
When cells
and batteries are wired together in parallel: a. | total voltage increases. | c. | total current increases. | b. | total voltage
decreases. | d. | total current
decreases. | | | | |
|
|
|
15.
|
If batteries
are wired in a series-parallel configuration: a. | the voltage increases; the current
decreases. | b. | the voltage decreases, the current
increases. | c. | the current increases; the voltage
increases. | d. | the current decreases; the voltage
decreases. | | |
|
|
|
16.
|
In a
series-parallel configuration, connect the cells as follows: a. | first in series, then
in parallel. | c. | either
way. | b. | first in parallel, then
in series. | d. | all of
these. | | | | |
|
|
|
17.
|
The source
of free electrons is called: a. | a potential. | c. | an electromotive force. | b. | a voltage
rise. | d. | all of
these. | | | | |
|
|
|
18.
|
The loss in
potential caused by a current flow in a circuit is named the: a. | voltage
source. | c. | voltage
gain. | b. | voltage drop. | d. | voltage potential. | | | | |
|
|
|
19.
|
The
preferred name and symbol for a voltage rise versus a voltage drop is: a. | voltage rise = E;
voltage drop = V | c. | voltage rise = E;
voltage drop = VOLT | b. | voltage rise = V; voltage drop = E | d. | all of these | | | | |
|
|
|
20.
|
The applied
or source voltage in a circuit equals: a. | the difference between the series and then the parallel voltage
drops. | b. | the difference between the parallel and then the series voltage
drops. | c. | the sum of all the series voltage drops. | d. | the sum of all the
parallel voltage drops. | | |
|
|
|
21.
|
The applied
or source voltage in a series circuit is divided: a. | equally if the lamps are of equal rating. | b. | proportionally to the
lamp resistances. | c. | so that all voltage drops add up to the source
voltage. | d. | all of these. | | |
|
|
|
22.
|
Ground is
the term applied to anything that is: a. | above the water. | c. | measured at zero potential or connected to the
Earth. | b. | below the atmosphere. | d. | measured with respect to a positive
polarity. | | | | |
|
|
|
23.
|
Electrical
ground differs from an earth ground in one important way: a. | electrical ground is
just a reference point. | b. | electrical ground often completes a circuit or
path. | c. | electrical ground may be an equipment cabinet or
case. | d. | electrical ground may not necessarily be connected directly to an
earth ground. | | |
|
|
|
24.
|
For safety
sake when working on electrical or electronic equipment, a technician must: a. | remove power from the
circuit or equipment before working on it. | b. | remove and replace fuses only after power to the circuit has been
deenergized. | c. | make sure all equipment is properly grounded to earth by measuring
with a voltmeter. | d. | all of these. | | |
|
|
|
25.
|
Voltage and
current differ in one important aspect: a. | voltage does work; current does no work. | b. | current does work,
voltage does no work. | c. | voltage is a theory; current is a proven
fact. | d. | voltage can exist without a current flow; a current flow cannot exist
without a voltage. | | |
|
|
|
26.
|
Voltage is
measured in units called: a. | millivolts. | c. | kilovolts. | b. | microvolts. | d. | all of these. | | | | |
|