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WorksheetsElectronic Circuits
Total questions: 39
Worksheet time: 20mins
Which of the following is a symbol for a battery in a wiring diagram?
Which of the following is the symbol for an LED?
Which of the following is the symbol for a resistor?
Which of the following is the symbol for an Electrolytic Capacitor?
Which of the following is the symbol for a Disc Capacitor?
Which of the following is the symbol for an NPN transistor?
Which of the following is the symbol for a PNP transistor?
Which of the following is a symbol for a speaker?
If you needed a 340 ohm resistor for a circuit, which color bands would it need to be starting from the left?
Orange, Yellow, Brown
Yellow, Orange, Black
Orange, Yellow, Black
Orange, Yellow, Red
The long wire on the LED is identified as the ?
Cathode wire
Base Pin
Emitter Pin
Anode wire
Which pin is the Cathode pin?
The one on the left
The one on the right
The image on the left is a top down view of an LED. The pin on the right is known as the
Anode
Cathode
This is a picture of a
Disc Capacitor
Electrolytic Capacitor
Diode
transistor
How many Ohms of resistance would a resistor have if the color bands were starting from left red, red, brown
220
2200
22
none that are listed
What would the value be of a resistor if starting from the left the colors were yellow, orange, yellow
43ohms
430 ohms
4,300 ohms
43,000 ohms
What should you always wear when soldering?
safety goggles
contact lenses
leather gloves
an apron
What should you never do with the metal part of the soldering iron?
touch it
lick it
place it on the counter
All of the above
Why should you never touch the soldering iron?
It has germs on it
you can't tell if it is hot or cold
you will get shocked
How do you test if your soldering iron is hot?
try tinning it
touch it
See if it burns the circuit board
What does soldering do?
joins metal for electrical connections
Melts metal to turn to liquid
tracks the sun
Before we can begin soldering, what do we need to wait for
the iron to get hot
to collect iron
to mount our iron
to fill our solder
This is an example of....
good joints
cold joints
This is an example of....
good joints
cold joints
This is an example of....
good joints
bad joints
What is this?
soldering iron
solder
chip wick
flux
What is this?
soldering iron
solder
chip wick
flux
What do you put on the iron after placing it on the board?
Soldering iron
solder
wick
the board
What do you remove from the board first?
Soldering iron
solder
wick
the board
What do you remove from the board last when soldering?
Soldering iron
solder
wick
the board
Which joint is a good one?
The one on the left
The one on the right
Neither
Both
Which soldering step is shown in the picture?
Clean your PCB using PCB eraser
Clean the soldering tip with a wet sponge to remove dirt and oxide
Place the component to be soldered in position on the board. Verify that the component is positioned correctly before soldering.
Move soldering iron until tip is touching wire
What are the tools shown?
Wire cutters
Pliers
Scissors
Shears
which soldering tool is shown in the picture?
Helping hand
solder wire
de soldering pump
soldering iron stand
Rosin Core Solder contains what chemical?
Flux
Graphite
sodium fluxicon
Silver oxyfluc
What temperature does a soldering iron typically reach?
400degC
100degC
400degF
100degF
The perfect soldered joint should be what shape?
Volcano
Round
Square
Triangular
A soldered joint that is grey rather than silver is known as what?
Dry joint
Wet joint
Dull joint
Perfect
What is this?
a solder
a soldering iron
a solder sucker
a solder wick
Which of these tools has a vacuum pump inside?
soldering iron
solder wick
solder sucker
desoldering iron
