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WorksheetsCORE UNIT MOTOR VEHICLE ELECTRICS
Total questions: 37
Worksheet time: 1hrs 24mins
Name
Class
Date
1.
What is an electrolyte?
a)
A gas that allows electrons to flow freely
b)
A substance that allows electricity to flow
c)
The two ends of a battery (positive and negative)
d)
What separates the charges inside a battery
2.
How is voltage produced in electrochemical cells?
a)
Two metals are separated by water and electrons flow back and forth (chemical energy)
b)
Two metals are separated by a conductive material that allows for electrons to flow in one direction (chemical energy)
c)
Electrons flow back and forth in a battery, the faster they move the more voltage is produced (kinetic energy)
d)
Two terminals in a battery are separated, the farther the terminals are separated the more work the electrons have to do (potential energy)
3.
The type of current where charges flow in one direction
a)
Direct Current
b)
Alternating Current
c)
Electron Flow
d)
Voltage
4.
A(n) ______________ is a reusable safety switch that breaks the circuit when the current gets too high.
a)
Fuse
b)
Grounded wire
c)
Fuse box
d)
Circuit breaker
5.
A device that contains a thin strip of metal that melts easily if the current in the circuit is too high
a)
Fuses
b)
Circuit
c)
Series circuit
d)
Circuit breaker
6.
A circuit in which the electricity bypasses the resistors and the current increases too much possibly causing the wires to overheat
a)
Closed circuit
b)
Short circuit
c)
Load
d)
Fuses
7.
The type of current where charges shake back and forth in a circuit
a)
Alternating Current
b)
Direct Current
c)
Voltage
d)
Switchback Current
8.
A voltmeter is described as a device that can be used to measure
a)
Voltage
b)
Current
c)
Resistance
d)
Power
9.
a/an _________ stops the flow of current
a)
resistor
b)
capacitor
c)
insulator
d)
conductor
10.
the law of static charge states
a)
like charges repel
b)
like charges attract
c)
unlike charges repel
d)
like charges dont exist
11.
the most common functions of a generic multi-meter are_______________
a)
voltmeter,ammeter, and ohmmeter
b)
voltmeter,ohmmeter, and wattmeter
c)
voltmeter, wattmeter, and light level
d)
wattmeter, light level, and ammeter
12.
In a circuit, electrons flow:
a)
from a battery to a lamp
b)
from the positive terminal of a voltage source to the negative terminal
c)
from the negative terminal of a voltage source to the positive terminal
d)
in the absence of resistance
13.
In the positive current convention, current is imagined to flow:
a)
from the positive terminal of a voltage source to the negative terminal
b)
from the negative terminal of a voltage source to the positive terminal
c)
From Bojangles to Wendys
d)
into space
14.
According to the electrical code, the highest DC voltage that is safe to handle directly is:
a)
10V
b)
30V
c)
50V
d)
120V
15.
4. According to the code, the highest AC voltage that is safe to handle directly is:
a)
12V
b)
30V
c)
50V
d)
60V
16.
. According to the code, in wet conditions the highest voltage that is safe to handle directly is:
a)
12V AC or DC
b)
12V AC,
c)
30V DC
d)
10V AC, 25V DC
17.
Energy is...
a)
The ability to do work
b)
Excited electrons
c)
A battery producing electricity
d)
The ability to move things faster
18.
Electrochemical cells differ from batteries because
a)
Batteries are a combination of electrochemical cells
b)
They are the same thing
c)
Electrochemical cells convert chemical energy into electrical energy whereas batteries convert electrical energy to kinetic energy
d)
Batteries have terminals, electrochemical cells do not
19.
The symbol for voltage is:
a)
Vo
b)
V
c)
W
d)
Amp
20.
The most common source of DC voltage is _______.
a)
a home wall outlet
b)
a generator
c)
a battery
d)
circuit board
21.
Identify this symbol.
a)
Lamp
b)
AC voltage source
c)
Battery
d)
Resistor
22.
Identify this symbol.
a)
Lamp
b)
AC voltage source
c)
Battery
d)
Resistor
23.
Insulator is?
a)
material that current can pass through easily
b)
material that current cannot pass through easily
c)
magnet
d)
static electricity
24.
A conductor is?
a)
material that current can pass through easily
b)
material that current cannot pass through easily
c)
magnet
d)
electric current
25.
A battery provides the...
a)
voltage difference to keep current flowing in a circuit
b)
current to increase resistance
c)
resistance to stop the flow of current
d)
none of these
26.
In order for a circuit to work you need to have
a)
A voltage source
b)
A complete pathway with no breaks in the circuit
c)
A resistor
d)
A voltage source and a complete pathway with no breaks in the circuit
27.
Current that is used by most household appliances
a)
AC
b)
DC
c)
BC
d)
AC/DC
28.
Current from a battery is
a)
AC
b)
DC
c)
BC
d)
AC/DC
29.
What is Electromotive Force commonly called?
a)
Amperage
b)
Inductance
c)
Resistance
d)
Voltage
30.
Define electrical current.
a)
Flow of atoms
b)
Flow of electrons
c)
Flow of decepticons
d)
Flow from the diner
31.
According to the NFPA what is the max safe DC Voltage?
a)
12
b)
30
c)
50
d)
120
32.
According to the NFPA what is the max safe AC Voltage?
a)
12
b)
30
c)
50
d)
120
33.
According to the NFPA what is the max safe Voltage near water?
a)
12
b)
30
c)
50
d)
120
34.
What are two steps for treating traumatic shock?
a)
keep warm and lower feet
b)
keep warm and elevate feet
c)
keep cool and lower feet
d)
keep cool and chill out yo
35.
What do we call protective safety equipment we wear?
a)
PPP
b)
PPE
c)
MICKEY
d)
Mouse
36.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
d)
off
37.
For lung failure , how much current is needed
a)
100 ma
b)
200 ma
c)
10 ma
d)
20 ma
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