General Static Awareness Test:
1.
Static electricity is really nothing more than:
a)
b)
c)
d)
2.
Static electricity will always be:
a)
b)
c)
d)
3.
During field service repairs
During printed circuit board assembly
A single electronic device
All of the above are true
Which type of electronic failure is usually the most costly?
a)
b)
c)
d)
6.
Attraction of dust and lint (contamination)
Damage to electronic products
Some materials to stick together
All of the above are true
Static can damage electronic devices at which level?
a)
b)
c)
d)
5.
A negative charge
A positive charge
Either a positive or a negative charge
Very difficult to control in a factory
Some of the problems that static can cause are:
a)
b)
c)
d)
4.
Basic chemistry
A very simple form of electricity
A subject which very little is known about
Something that we in electronics should not worry about
When a single device fails on a circuit board
When a circuit board fails during test
When a piece of assembled equipment fails during test
When the product fails in the field, usually while a customer is using it.
An electronic failure in the field can be very costly because:
a)
b)
c)
d)
The customer will be unhappy with the product
The failure could affect a piece of equipment that is very important, like medical.
It is expensive to replace or repair a product in the field
All of the above are true
7.
The most common cause of device failure is:
a)
b)
c)
d)
8.
Many electronic devices can be damaged at low voltage levels:
a)
b)
c)
d)
9.
Become less sensitive to static
Become more sensitive to static
Become much more expensive
Become very hard to find in the market
How is it possible to damage electronics without touching it?
a)
b)
c)
d)
13.
People
Clothing
Air movement
Dust and dirt
As electronic parts get smaller and smaller, they tend to:
a)
b)
c)
d)
12.
100 volts
10,000 volts
3,000 volts
Well over 15,000 volts
One of the biggest threats for static damage to electronics is:
a)
b)
c)
d)
11.
1,500 volts
100 volts
1,000 volts
3,000 volts
Before you can feel a static discharge, it must be about:
a)
b)
c)
d)
10.
Improper component testing
ESD/EOS
Problems with the die attachment
There is no “most common” failure mechanism for devices.
From heat generated by air movement
From the electric field that a charged object has
You must touch a part in order to damage it
You cannot damage a part without touching it
The closer a charged object is brought to an electronic part:
a)
b)
c)
d)
The stronger the electric field will be
The greater the chance of damaging the part
This has no effect on the electronic part
Both “a” and “b” are correct answers
14.
If you are charged up, the static on you will:
a)
b)
c)
d)
15.
Not be a problem if you are handling sensitive electronics
Will cause you to feel rather weakened
Will be attracted to an electronic part unless it is the exact same potential as you
You cannot charge up a person with static
Generally, what is a safe distance for charged objects on a bench?
a) At least three feet or more
b) Anything under four inches is OK
c) No distance is safe
d) 12 inches is a generally acceptable distance
16.
A conductive object (like people) will:
a)
b)
c)
d)
17.
These things can be easily grounded:
a)
b)
c)
d)
18.
People
Metal case of equipment
A metal shelf
Clear plastic bags and foam cups
If there is no ground attachment available, then attach to:
a)
b)
c)
d)
20.
Plastic drinking cups and bottles
People
Adhesive tapes, like Scotch™ Tape
All of the above can be easily grounded with a wrist strap
These things cannot be grounded and can generate a lot of static:
a)
b)
c)
d)
19.
Allow electricity to flow through it
Cannot be grounded
Cannot generate static electricity
All of the above are true
Unpainted metal on the equipment that you will be working on
A very large, insulated section of plastic
Do not attach, but work very quickly to lessen any possible damage
A ground attachment will always be available, in all cases
When two conductors (a person and a metal case) are connected:
a)
b)
c)
d)
It is called grounding
It is called bonding
It is called static neutralization
It is called equal potential static elimination
21.
Which of these statements is true?
a)
b)
c)
d)
22.
Which is a true statement about ionized air?
a)
b)
c)
d)
23.
A clear plastic bag
A roll of Scotch™ Tape
A metal bench top
“a” and “b” are correct answers
The best method to remove static from an insulator would be:
a)
b)
c)
d)
27.
A dense cloud of positive ions only
A dense cloud of negative ions only
A dense cloud of both positive and negative ions
A dense cloud of neutralized air blowing from a fan
Which of these materials could be called “insulators”?
a)
b)
c)
d)
26.
Control static on people who are walking
Control static on plastic adhesive tapes and their dispenser
Control static build-up on people working at a bench
All of these are good applications for ionized air
Which is the best description of ionized air:
a)
b)
c)
d)
25.
It is used primarily to neutralize static on non-conductors
It is a group of both positive and negative ions
It should not be used to neutralize people
These are all true statements
Which of these would be a good application for ionized air?
a)
b)
c)
d)
24.
A conductor will allow electricity to flow through it
A non-conductor will allow electricity to flow through it
People can be considered as being non-conductive
In general, plastic boxes are a very good conductor
To ground it
To use ionized air
To bond it to something made out of metal
An insulator cannot generate static electricity
If using an ionized air blower, the best way to use it would be:
a)
b)
c)
d)
Position it so that it blows across the work surface area
Position it so that it blows on you
Position it to blow upwards to neutralize all the air in the work area
Position it so that it does not blow across the work surface area
28.
What does “ESD” stand for?
a)
b)
c)
d)
29.
Static electricity can cause different types of damage to electronics:
a)
b)
c)
d)
30.
The heat you feel from a very warm object
The rainbow that you sometimes see after a storm
Touching a doorknob and receiving a static shock
Touching a doorknob and not feeling any shock
If you touch an electronic device and do not feel any “zap”:
a)
b)
c)
d)
34.
An ungrounded person touching sensitive electronics
A charged object (such as a plastic cup) brought very close to electronics
Handling a circuit board by the edges and not touching any parts
All of the above can damage electronics
This would be similar to a “static field.”
a)
b)
c)
d)
33.
It is sometimes difficult to detect it without the proper measuring instruments
Because it is seldom felt, many people don’t believe it’s a problem
Both “a” and “b” are correct answers
Static only affects a few different types of electronic parts and/or assemblies
Which of these can cause static damage to electronics?
a)
b)
c)
d)
32.
A device can be completely damaged where it will no longer operate
A device can be weakened so that it will fail in the field while being used
A device can fail intermittently: one minute it works, the next minute it will not
All of the above are true statements
This can be a major problem with ESD in an electronics facility:
a)
b)
c)
d)
31.
“Devices Sensitive to Electricity”
“Electrostatic Discharge”
“Electricity Should Discharge”
“Electrical Overstress”
Then no static damage was done
The device may have been damaged
You do not have to feel static in order to cause damage
Both “b” and “c” are correct answers
Which level would most likely be the most expensive failure?
a)
b)
c)
d)
A single device
A printed circuit board
A system failure, such as during final test of a piece of equipment
A failure in the field
35.
Which of these is NOT a good idea?
a)
b)
c)
d)
36.
Which is NOT a true statement?
a)
b)
c)
d)
37.
Using pink colored static bags to package non-electronic parts (hardware).
Using a pink static bag to package a circuit board with Styrofoam “peanuts”.
Using a pink static bag as a work order or diagram holder
These are all good applications for pink static bags
Which of these statements represents a GOOD application?
a)
b)
c)
d)
41.
Pink colored static bags do not generate much static electricity
Pink colored static bags protect electronics from static fields
Pink colored static bags can never wear out
All of the above statements are true
Which of these statements represents a BAD application?
a)
b)
c)
d)
40.
Only wear one strap
Always wear two straps
Test the straps on a regular basis to make certain they are working properly
Both “b” and “c” are correct answers
Which of the following statements are true?
a)
b)
c)
d)
39.
As long as the wrist band touches bare skin, it will work properly
Almost all wrist bands can be washed to clean them
It does not matter which arm the wrist band is worn on
A properly grounded person cannot generate much static
If a person wears heel straps for grounding, they should:
a)
b)
c)
d)
38.
Whenever you handle electronics, make certain that you are grounded
A static bag can be used like a “potholder” to carry a circuit board
You should test the static control equipment to make certain it is working
Make certain that others entering your area are aware of ESD control
Using a metalized static bag as a tray to carry electronic parts
Using a metalized static bag as a “potholder” to carry electronic parts
Using a metalized static bag to store electronic parts in
These are all good applications for metalized static bags
When using metalized static bags for packaging electronics:
a)
b)
c)
d)
The bag should be sealed
The bag should be large enough to completely contain the contents
The bag should never be sealed with a label
Both “a” and “b” are correct answers
42.
Which of these is a true statement regarding metalized static bags?
a)
b)
c)
d)
43.
Where should static control be used within an electronics company?
a)
b)
c)
d)
44.
It is a stationary electrical charge (it doesn’t move around all the time)
A very simple form of electricity that is fairly easy to control
An electrical charge that can be either plus or minus
All of the above
The trend in the electronics industry is for parts to become:
a)
b)
c)
d)
48.
To reduce product failures in the factory
To reduce product failures in the field
To increase the reliability of the products we handle and build
All of the above are goals for controlling static
One way to describe static electricity would be:
a)
b)
c)
d)
47.
Everyone who handles electronics must be grounded
Managers who handle electronics do not have to be grounded
Engineers who handle electronics do not have to be grounded
All of the above are true statements
What is a goal for controlling static electricity?
a)
b)
c)
d)
46.
Throughout the entire company
Wherever electronic parts and assemblies are handled
Only in the test department
Only in the receiving and shipping areas
Which of these statements is true?
a)
b)
c)
d)
45.
These bags can never wear out – they will always protect parts
Small holes in the bag do not affect its ability to protect parts
These bags cannot shield out static electricity
Using a staple to seal these bags cannot cause any problems
Less sensitive to static electricity
More sensitive to static electricity
Much larger and less sensitive to static
None of the above
When humidity increases, static electricity will tend to:
a)
b)
c)
d)
Decrease
Increase
Stay about the same
Really cause a lot more problems
49.
If you walk across a carpet and receive a pretty good shock:
a)
b)
c)
d)
50.
You have discharged probably around 100 volts
You have discharged probably around 1,000 volts
You have discharged probably around 10,000 volts
You have discharged probably around one million volts
Static damages an electronic part by:
a)
b)
c)
d)
Actually melting through one of the layers within it causing a short
Actually causing the device to catch fire
Actually causing the device to shrink in size
Actually causing the device work more efficiently
Answer Key
(Static Awareness 101)
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B
C
D
D
D
D
B
B
C
A
B
B
D
C
D
A
B
D
A
B
A
D
B
C
D
B
A
B
D
C
D
A
D
D
B
A
D
A
B
C
D
B
B
A
D
D
B
A
C
A