Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
A ____ circuit is the conductors that supply power to electrical equipment from
the last overcurrent protective device (fuse or circuit breaker).
a. | branch | c. | parallel | b. | feeder | d. | series |
|
|
|
2.
|
____ is the amount of power a circuit is supplying to an electrical
device.
a. | Amperage | c. | Resistance | b. | Load | d. | Voltage |
|
|
|
3.
|
The ____ across any branch of a parallel circuit is the same as the applied
voltage.
a. | amperage | c. | voltage drop | b. | resistance | d. | wattage |
|
|
|
4.
|
The total resistance of a ____ circuit is always less than the resistance of the
lowest value resistor in the circuit.
a. | combination | b. | parallel | c. | series |
|
|
|
5.
|
According to Ohm's law, an increase of resistance must cause a proportional
decrease of ____.
a. | voltage | c. | resistance | b. | wattage | d. | current |
|
|
|
6.
|
In parallel circuits, when all resistors are of equal value the total resistance
is equal to the value of one individual resistor ____.
a. | multiplied by the number of resistors | c. | multiplied by the
voltage | b. | divided by the number of resistors | d. | divided by the
voltage |
|
|
|
7.
|
When using the product over sum method of determining the total resistance of a
parallel circuit, you would ____.
a. | multiply the total of R(1) times R(2) by the total of R(1) plus
R(2) | b. | multiply the total of R(1) plus (R2) by the total of R(1) times
R(2) | c. | divide the total of R(1) times R(2) by the total of R(1) plus R(2)
| d. | divide the total of R(1) plus R(2) by the total of R(1) times
R(2) |
|
|
|
8.
|
The reciprocal of any number is that number divided ____.
a. | by 1 | c. | into 10 | b. | into 1 | d. | by 10 |
|
|
|
9.
|
The total amount of power in a ____ circuit is equal to the sum of the power
used by all the parts.
a. | series | c. | combination | b. | parallel | d. | any of the
above |
|
|
|
10.
|
In a parallel circuit,the amount of current flowing through each resistor is
inversely proportional to its ____.
a. | amperage | c. | resistance | b. | current | d. | wattage |
|
|
|
11.
|
In parallel circuits, the voltage across each branch of the circuit is
____.
a. | dependent on the value of the branch resistor | b. | dependent on the
total current | c. | always equal | d. | none of the
above |
|
|
|
12.
|
If four resistors, each with a value of 100 ohms, are connected in parallel, the
total resistance of the circuit is ____ ohms.
|
|
|
13.
|
Three resistors, with values of 10 ohms, 20 ohms, and 30 ohms, are connected in
parallel and the circuit has a voltage of 120 volts with an amperage of 2.5 amps. The total current
of the 20-ohm branch is ____ amps.
|
|
|
14.
|
If a parallel circuit has two resistors with values of 10 ohms and 25 ohms, the
total resistance of the circuit is ____ ohms.
|
|
|
15.
|
The amount of current leaving the source ____.
a. | is always less than the current returning to the source | b. | is always more than
the current returning to the source | c. | must equal the current returning to the
source | d. | varies with the value of the resistance in the
circuit |
|