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WorksheetsElectronics I PreTest
Total questions: 98
Worksheet time: 49mins
Name
Class
Date
1.
When the heart stops beating and goes into rapid, useless vibrations, this is called:
a)
Excitement
b)
Limbo
c)
A blood clot
d)
Fibrillation
e)
I don't know
2.
Shaded components on electronics schematics mean:
a)
Only factory service personnel may change the part
b)
Only exact replacement parts may be used
c)
The shading makes for better readability
d)
High voltage is present on these parts
e)
I don't know
3.
Ingested solder fumes or particles ________
a)
Are not harmful to the human body
b)
Are toxic
c)
From lead-tin solder aren’t harmful
d)
From tin-alloys are most harmful
e)
I don't know
4.
Second degree skin burns should _____________
a)
Not be treated with ice and bandage pack
b)
Be covered with thick bandages
c)
Be treated with cold water or ice
d)
Be treated by draining blisters
e)
I don't know
5.
One way that chemicals can enter your body is by:
a)
Absorption
b)
Transfer
c)
Money
d)
Traffic
e)
I don't know
6.
Employees have a right-to-know the hazards where they work
a)
Ohm’s Law
b)
Power Law
c)
Watt’s Law
d)
Right-to-Know Law
e)
I don't know
7.
One type of heart attack is:
a)
Power
b)
Muscle
c)
Fibrillation
d)
Excitement
e)
I don't know
8.
If you have never received formal training and practiced CPR on a person or dummy, in the event of finding a fellow worker not breathing, you ________
a)
Should use what knowledge you do have of the procedure and attempt it
b)
Should not attempt it, but call for help
c)
Should attempt it after calling for help
d)
Should, if hand, read the instructions and attempt it in order to save the life
e)
I don't know
9.
“Phantom” current is associated with __________
a)
Northern Lights
b)
Corona arching from electrical generators
c)
Charge retained by inductors
d)
Charge retained by capacitors
e)
I don't know
10.
When working at heights above 6 feet, a ______ is required by OSHA rules
a)
Lineman’s belt
b)
Lineman’s belt attached to a lanyard
c)
Full body harness attached to a lanyard which prevents more than a 6 foot drop
d)
Good insurance policy
e)
I don't know
11.
What is considered more dangerous than voltage
a)
Current
b)
Wattage
c)
Ohms
d)
Volts
e)
I don't know
12.
What tends to knock the victim away from a circuit, minimizing shock exposure time?
a)
Current
b)
Wattage
c)
Ohms
d)
Voltage
e)
I don't know
13.
___________________ is an example of an electrical conductive material
a)
Copper
b)
Plastic
c)
Air
d)
Rubber
e)
I don't know
14.
You can use a ______________________________ to remove a victim who is being shocked by contact with an electrical circuit
a)
Metal rod
b)
Piece of dry wood
c)
A wire
d)
Your hands
e)
I don't know
15.
_____________________ is an example of an electrical insulating material
a)
Copper
b)
Gold
c)
Aluminum
d)
Rubber
e)
I don't know
16.
Federal group that makes sure things are done safely is:
a)
MSDS
b)
OSHA
c)
EPA
d)
UL
e)
I don't know
17.
Materials through which electrical current can easily flow is called a/an:
a)
Capacitor
b)
Insulator
c)
Conductor
d)
Inductor
e)
I don't know
18.
Federal group that performs safety tests on things is:
a)
MSDS
b)
OSHA
c)
EPA
d)
UL
e)
I don't know
19.
Federal group that oversees the use and disposal of chemicals is:
a)
MSDS
b)
OSHA
c)
EPA
d)
UL
e)
I don't know
20.
The most dangerous part of electricity is:
a)
Current
b)
Voltage
c)
Wattage
d)
Wire
e)
I don't know
21.
If you are working on a “live” circuit, what should you do with one of your hands?
a)
Put it in water
b)
Hold onto something metal
c)
Put it behind your back or in your pocket
d)
It doesn’t matter
e)
I don't know
22.
What class of fire extinguisher should be used to put out a fire where paper and cardboard are burning?
a)
Class A
b)
Class B
c)
Class C
d)
Class ABC
e)
I don't know
23.
Which fire extinguisher is called the “multi-purpose” fire extinguisher?
a)
Class A
b)
Class B
c)
Class C
d)
Class ABC
e)
I don't know
24.
What is the most important thing to do, besides call for help, when someone is being shocked?
a)
Stop, Drop and Roll
b)
Get them off the wire or turn power off
c)
Do first aid
d)
Perform CPR
e)
I don't know
25.
Most accidents in school labs happen to the:
a)
Arms
b)
Legs
c)
Eyes
d)
Nose
e)
I don't know
26.
If a switch makes a connection in only one handle position, it is called a _____________________________________ switch
a)
single pole
b)
double pole
c)
broke
d)
single throw
e)
I don't know
27.
When should you wear safety glasses?
a)
always
b)
sometimes
c)
whenever it feels right
d)
when soldering or cutting wire
e)
I don't know
28.
We can convert the sun’s light directly into electricity by using a:
a)
solar cell
b)
magnet
c)
fuel cell
d)
thermocouple
e)
I don't know
29.
Light sensitive resistors are called:
a)
magnets
b)
fuel cells
c)
photoresistive cells
d)
galvanometers
e)
I don't know
30.
What does this schematic symbol represent?
a)
a fuel cell
b)
a magnet
c)
a resistor
d)
a photoresistive cell
e)
I don't know
31.
A meter that measures a very small voltage is called a/an:
a)
galvanometer
b)
ohmmeter
c)
voltmeter
d)
ammeter
e)
I don't know
32.
A device used to indicate and control the heat of electric ovens and furnaces is called a/an:
a)
Photo cell
b)
Resistor
c)
Thermocouple
d)
Magnet
e)
I don't know
33.
A crystal microphone is a familiar example of which source of electricity?
a)
Magnetism
b)
Mechanical Pressure
c)
Fuel Cell
d)
Solar Cell
e)
I don't know
34.
Several of these are used in the space program and develop over 2 kW of energy
a)
Solar Cell
b)
Photoresistive Cell
c)
Fuel Cell
d)
Magnetic Cell
e)
I don't know
35.
A generator proves that ________________ can produce electricity
a)
Electricity
b)
Water
c)
Money
d)
Magnetism
e)
I don't know
36.
What is the value of a resistor whose colors are Brown, Black and Brown?
a)
10 Ω
b)
100 Ω
c)
1,000 Ω
d)
1,000 Ω
e)
I don't know
37.
What is the value of a resistor whose colors are Yellow, Violet and Black?
a)
400 Ω
b)
4700 Ω
c)
4 Ω
d)
47 Ω
e)
I don't know
38.
The last band Silver on a resistor tells us the tolerance of that resistor
a)
5%
b)
10%
c)
15%
d)
20%
e)
I don't know
39.
The last band Gold on a resistor tells us the tolerance of that resistor
a)
5%
b)
10%
c)
15%
d)
20%
e)
I don't know
40.
If there is NO tolerance band on a resistor, what percentage of tolerance is that resistor?
a)
5%
b)
10%
c)
15%
d)
20%
e)
I don't know
41.
What is the abbreviation for a potentiometer?
a)
POT
b)
PTO
c)
POM
d)
PMO
e)
I don't know
42.
A toaster with a 40-ohm heater element would produce a current of ________ A when connected to a 120-volt circuit
a)
3
b)
30
c)
0.333
d)
0.003
e)
I don't know
43.
A resistance of __________ produces a current equal to 5 amps when connected to 40 volts
a)
0.125
b)
125
c)
80
d)
8
e)
I don't know
44.
When 12 volts are connected to 4 ohms, a current equal to ___________amps flows through the resistance
a)
3
b)
0.333
c)
30
d)
333
e)
I don't know
45.
How much current will a 12 V car battery produce when connected to a lamp with a 600 Ω resistance value?
a)
2
b)
0.02
c)
50
d)
500
e)
I don't know
46.
The letter symbol for current is:
a)
E
b)
I
c)
R
d)
P
e)
I don't know
47.
The letter symbol for voltage is:
a)
E
b)
I
c)
R
d)
P
e)
I don't know
48.
The letter symbol for resistance is:
a)
E
b)
I
c)
R
d)
P
e)
I don't know
49.
Current is measured in:
a)
volts
b)
ohms
c)
watts
d)
amps
e)
I don't know
50.
Voltage is measured in:
a)
volts
b)
ohms
c)
watts
d)
amps
e)
I don't know
51.
Resistance is measured in:
a)
volts
b)
ohms
c)
watts
d)
amps
e)
I don't know
52.
The opposition to the movement of electrons in a circuit is:
a)
Force field
b)
Reluctance
c)
Resistance
d)
Restriction
e)
I don't know
53.
What is a system of conductors through which an electric current is intended to flow?
a)
Fuse
b)
Ground
c)
Cell
d)
Circuit
e)
I don't know
54.
Which type of voltage is supplied by a battery?
a)
AC
b)
BC
c)
CC
d)
DC
e)
I don't know
55.
What does the term DC refer to in electronics?
a)
Dedicated control
b)
Dielectric component
c)
Direct Current
d)
Discrete circuit
e)
I don't know
56.
In what direction does electron current flow?
a)
Positive to negative
b)
Positive to positive
c)
Negative to positive
d)
Negative to negative
e)
I don't know
57.
Which letters represent voltage, current, and resistance in Ohm’s Law?
a)
E, C, and R
b)
E, I, and R
c)
V, A, and O
d)
V, C, and R
e)
I don't know
58.
Like charges:
a)
Attract
b)
Do not repel
c)
Repel
d)
Attract and repel
e)
I don't know
59.
Unlike charges:
a)
Attract
b)
Do not attract
c)
Repel
d)
Attract and repel
e)
I don't know
60.
The volt is the unit of measure for:
a)
Current
b)
Voltage
c)
Magnetomotive force
d)
Resistance
e)
I don't know
61.
What is missing from the Ohm’s Law chart?
a)
C
b)
I
c)
P
d)
Ω
e)
I don't know
62.
The force or push behind electron movement is called ____________
a)
Voltage
b)
Current
c)
Resistance
d)
Ohm
e)
I don't know
63.
Electron movement is called _______________
a)
voltage
b)
current
c)
resistance
d)
ohm
e)
I don't know
64.
Which part of the circuit provides electrical energy?
a)
Source
b)
Load
c)
Conductors
d)
Switch
e)
I don't know
65.
Which part of a circuit provides a current path?
a)
Source
b)
Load
c)
Conductors
d)
Switch
e)
I don't know
66.
Opposition to current flow is called ________________
a)
Current
b)
Voltage
c)
Resistance
d)
Coulomb
e)
I don't know
67.
Which part of the circuit converts electrical energy into mechanical energy?
a)
Source
b)
Load
c)
Conductors
d)
Switch
e)
I don't know
68.
A battery is a good example of what part of a basic electrical circuit?
a)
Source
b)
Load
c)
Conductors
d)
Switch
e)
I don't know
69.
A light bulb is a good example of what part of a basic electrical circuit?
a)
Source
b)
Load
c)
Conductors
d)
Switch
e)
I don't know
70.
Which is an example of a natural magnet?
a)
Electromagnet
b)
Lodestone
c)
Magnetized screwdriver
d)
Piece of coal
e)
I don't know
71.
A magnet has two poles which are:
a)
East and South Pole
b)
East and West Pole
c)
North and West Pole
d)
South and North Pole
e)
I don't know
72.
Which electronic device operates as a result of magnetic principles?
a)
Diode
b)
Electrolytic capacitor
c)
Relay
d)
Transistor
e)
I don't know
73.
What is that section of a magnet where magnetic lines of force concentrate?
a)
Flux Pole
b)
Magnetic Pole
c)
Induction Point
d)
Meeting Point
e)
I don't know
74.
Which material would be best suited for use as the core of an electromagnet?
a)
Air
b)
Brass
c)
Copper
d)
Soft Iron
e)
I don't know
75.
A basic law of magnetism states:
a)
A north pole will be repelled by a south pole
b)
A permanent magnet will not react with an electromagnet
c)
Like magnetic poles attract, unlike poles repel
d)
Like magnetic poles repel, unlike poles attract
e)
I don't know
76.
Which statement regarding a magnet is true?
a)
Magnetic lines of force cross each other
b)
Magnetic lines of force leave the north pole of a magnet and enter the south pole
c)
Magnetic lines of force do NOT form closed loops
d)
Magnetic lines of force exist only in natural magnets
e)
I don't know
77.
Which statement regarding lines of flux is true?
a)
Flux lines cross each other 8 times
b)
Flux lines cross each other 4 times
c)
Flux lines cross each other 1 time
d)
Flux lines do not cross each other
e)
I don't know
78.
What letter represents Field Intensity?
a)
E
b)
F
c)
G
d)
H
e)
I don't know
79.
What Greek letter represents flux?
a)
Alpha α
b)
Beta β
c)
Gamma γ
d)
Phi Ф
e)
I don't know
80.
What letter represents Flux Density?
a)
A
b)
B
c)
C
d)
D
e)
I don't know
81.
What letter represents reluctance?
a)
P
b)
Q
c)
R
d)
S
e)
I don't know
82.
If a substance is slightly attracted by magnetic fields, it is said to be:
a)
Ferromagnetic
b)
Paramagnetic
c)
Diamagnetic
d)
Not Magnetic
e)
I don't know
83.
Which of the following is NOT a way of classifying magnets?
a)
Permanence
b)
Origin
c)
Shape
d)
Color
e)
I don't know
84.
Magnets come in a variety of shapes
a)
Ring, Square and Box
b)
Bar, Ring and Circle
c)
Horseshoe, Ring and Square
d)
Bar, Ring and Horseshoe
e)
I don't know
85.
The earth is a form of:
a)
Artificial magnet
b)
Electromagnet
c)
Natural magnet
d)
Non-magnetic material
e)
I don't know
86.
An artificial magnet can be produced by:
a)
Striking a piece of metal with a hammer
b)
Placing a piece of metal next to a battery
c)
Stroking a piece of metal with a block of wood
d)
Stroking a piece of metal with a permanent magnet
e)
I don't know
87.
Which of the following is an example of a natural magnet?
a)
Screwdriver
b)
Flashlight
c)
Magnetite
d)
Sodium
e)
I don't know
88.
Often, the voltmeter, ammeter and the ohmmeter are combined in a single instrument called a/an:
a)
Versatile meter
b)
Hydrometer
c)
Multimeter
d)
Analog meter
e)
I don't know
89.
If you are going to check a wire to make sure it is good from one end to the other, you would be checking for:
a)
Current
b)
Opposition
c)
Condition
d)
Continuity
e)
I don't know
90.
To safely measure current flowing through a circuit, how should an ammeter be connected?
a)
Series
b)
Parallel
c)
Either series or parallel
d)
Neither series nor parallel
e)
I don't know
91.
When measuring an unknown current with an ammeter, the range switch should be set to:
a)
The lowest range
b)
The highest range
c)
Zero
d)
Infinity
e)
I don't know
92.
When measuring an unknown voltage, the voltmeter should initially be set to which range?
a)
The lowest range
b)
The highest range
c)
Zero
d)
Infinity
e)
I don't know
93.
When measuring a DC voltage, what must be observed correctly?
a)
Element
b)
Code
c)
Drop
d)
Polarity
e)
I don't know
94.
Which current range should the meter be set to measure approximately 35 mA?
a)
50 Microampere range
b)
50 Milliampere range
c)
50 Ampere range
d)
50 Megampere range
e)
I don't know
95.
What type meter is easier to read than an analog meter once you become familiar with it?
a)
Bench
b)
Digital
c)
Portable
d)
Panel
e)
I don't know
96.
Voltmeters are always connected in:
a)
Series
b)
Parallel
c)
Either Series or Parallel
d)
Neither Series Nor Parallel
e)
I don't know
97.
The __________________ of resistors do not change unless the power of the resistor changes
a)
size
b)
color
c)
shape
d)
bands
e)
I don't know
98.
A function switch or selector switch on a meter tells what?
a)
Type and range of measurement
b)
If the meter is on
c)
Length of measurement
d)
Frequency of measurement
e)
I don't know
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