Unit 2 Test
Electricity and It’s Use in
the Household
For
questions 1-5 fill in the blank.
1.
Electricity
is the movement of ___________ caused by electrical pressure or voltage.
2.
Electricity
is generated form steam, _________, or internal combustion engines.
3.
Ampere
is the measurement of rate of __________ of electrical current.
4.
Volt
is the measurement of rate of electrical ___________.
5.
Watt
is the unit of measure of electrical __________.
For
questions 6-10 choose the correct answer.
6.
A
step down station is needed in order to:
a)
allow
for proper voltage to enter homes
b)
not
blow breakers
c)
ensure
safety of home
d)
all
of the above
7.
An
example of direct current is circuits used in:
a)
autos
b)
wall
outlets
c)
light
switches
8.
Of
the following, which is most widely used to generate electricity?
a)
water
b)
steam
c)
internal
combustion engines
9.
Which
of the following is the correct order of distribution for electricity?
a)
power
plant, transmission line, step up station, step down station, homes
b)
power
plant, step up station, transmission line, step down station, homes
c)
transmission
lines, power plant, step up station , homes
10. Which of the following is
the correct definition of a cycle for our purposes?
a)
flow
of electricity in one direction and the reverse flow in the opposite direction
b)
when
a baseball player hits a single, double, triple and home run in the same game
c)
flow
of electricity in one direction only
For
questions 11-15 tell whether each is true or false
11. Disconnect safety devices in electrical equipment. ____
12. Use extension cords that feel warm. ____
13. Use GFI in wet areas. _____
14. Replace blown fuses with large ones. ___
15. Don’t use damaged switches
and outlets. ____
For
questions 16-20 give brief answers
16. Draw the path of a simple circuit.
17. Explain how a series circuit
works.
18. Explain how a parallel series works.
19. Explain how a 120 volt circuit can be run.
20.
Give a few reasons for stressing electrical safety.