ESD Annual Refresher Training
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Questions and Answers
- 1.
Damaging static discharges could affect the quality, ____, reliability of electronic communications equipment.
- A.
Solidity
- B.
Strenth
- C.
Stability
- D.
Durability
Correct Answer
D. DurabilityExplanation
Damaging static discharges could affect the quality, stability, and reliability of electronic communications equipment. Static discharges can cause damage to the delicate components of electronic equipment, leading to malfunctions or complete failure. The durability of the equipment is crucial in protecting it from such discharges and ensuring its long-term functionality and performance.Rate this question:
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- 2.
What is a stored electrical charge at rest?
- A.
Static electricity
- B.
Electrical build
- C.
Electrical cling
- D.
Resting charge
Correct Answer
A. Static electricityExplanation
Static electricity refers to the accumulation of electric charges on the surface of an object. It occurs when there is an imbalance of positive and negative charges, causing them to be attracted to each other. This stored electrical charge remains at rest until it is discharged through a conductor or by coming into contact with another object with a different charge. Therefore, static electricity is the correct answer as it accurately describes the phenomenon of a stored electrical charge at rest.Rate this question:
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- 3.
The quantity of charge accumulated is dependent on the size, shape, composition, and electrical ____ of the substances making up the charging and insulated bodies.
- A.
Surroundings
- B.
Properties
- C.
Attributes
- D.
Features
Correct Answer
B. PropertiesExplanation
The quantity of charge accumulated is dependent on the size, shape, composition, and electrical properties of the substances making up the charging and insulated bodies. The properties of the substances determine how easily they can accumulate or transfer charge. For example, materials with high electrical conductivity will allow charge to flow more easily, while insulators will resist the flow of charge. Therefore, understanding the electrical properties of the substances involved is crucial in determining the quantity of charge that can be accumulated.Rate this question:
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- 4.
What kind of environment is static electricity most common and its highest level?
- A.
Dry
- B.
Cold
- C.
Humid
- D.
Tropical
Correct Answer
A. DryExplanation
Static electricity is most common in dry environments. In such conditions, the air has low humidity, which means it has a low moisture content. This lack of moisture allows for the buildup of static charges on surfaces and objects. The highest level of static electricity is also typically observed in dry environments because the absence of moisture facilitates the accumulation and discharge of static charges more readily.Rate this question:
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- 5.
Damage can be caused by ____ contact or by the ____ field associated with charged items.
- A.
Indirect, electromagnetic
- B.
Direct, electrostatic
- C.
Incidental, passive
- D.
Accidental, static
Correct Answer
B. Direct, electrostaticExplanation
Damage can be caused by direct contact or by the electrostatic field associated with charged items. Direct contact refers to physical contact between objects, which can cause damage through impact or friction. Electrostatic refers to the buildup of static electricity on objects, which can cause damage through electrical discharge or interference. Therefore, direct contact and the electrostatic field are both potential causes of damage.Rate this question:
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- 6.
Dielectric breakdown occurs when the ____ or ____ electric field strength of the dielectric medium is reached and bonded electrons within the medium break free and flow within the dielectric.
- A.
Threshold, maximum
- B.
Highest, maximum
- C.
Ceiling, maximum
- D.
Lowest, minimum
Correct Answer
A. Threshold, maximumExplanation
Dielectric breakdown occurs when the threshold electric field strength of the dielectric medium is reached. At this point, the bonded electrons within the medium break free and flow within the dielectric. This phenomenon happens when the maximum electric field strength is applied to the dielectric, causing the electrons to overcome the forces holding them in place.Rate this question:
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- 7.
Current-caused failures primarily affect ____ devices.
- A.
Sensitive
- B.
Volatile
- C.
Bipolar
- D.
Critical
Correct Answer
C. BipolarExplanation
Current-caused failures primarily affect bipolar devices. Bipolar devices, such as bipolar junction transistors (BJTs), are more susceptible to current-induced failures compared to other types of devices. This is because bipolar devices rely on both electron and hole currents for their operation. Excessive current flow can lead to overheating and damage to the device, causing it to fail. Therefore, bipolar devices need to be carefully designed and protected to prevent current-induced failures.Rate this question:
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- 8.
What failure is the partial electronic part breakdown of an ESD sensitive item and generally causes the item to give low output or other erroneous signals?
- A.
Latent
- B.
Detrimental
- C.
Intermittent
- D.
Catastrophic
Correct Answer
C. IntermittentExplanation
Intermittent failure refers to the partial electronic breakdown of an ESD sensitive item, which can result in low output or other erroneous signals. This type of failure occurs sporadically and unpredictably, making it difficult to identify and troubleshoot. Unlike catastrophic failure, which causes complete malfunction, intermittent failure only affects the item temporarily, causing intermittent issues. Therefore, the correct answer for this question is "intermittent."Rate this question:
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- 9.
Linear circuits with high ____ and ____ inputs would also be highly susceptible along with RF amplifiers and other RF parts at the equipment level.
- A.
Current, analog
- B.
Voltage, digital
- C.
Impedance, gain
- D.
Frequency, logic level
Correct Answer
C. Impedance, gainExplanation
Linear circuits with high impedance and gain inputs would be highly susceptible to interference, as high impedance allows for easy coupling of external signals, while high gain amplifies these signals. This makes them vulnerable to noise and other disturbances that can degrade the performance of the circuit. RF amplifiers and other RF parts at the equipment level are also susceptible to interference due to their sensitivity to high-frequency signals.Rate this question:
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- 10.
Most ESD susceptible parts and assemblies are clearly marked, either on the packaging ____ or the part ____.
- A.
Inventory, components
- B.
List, substance
- C.
Label, number
- D.
Material, type
Correct Answer
D. Material, typeExplanation
ESD susceptible parts and assemblies are marked with information about their material and type. This helps in identifying and handling them correctly to prevent any damage from electrostatic discharge. The marking can be found either on the packaging or directly on the part itself. This information is crucial for proper inventory management and ensuring that the right components are used in the assembly process.Rate this question:
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- 11.
Increasing the level of ____ will help alleviate existing ESD problems
- A.
Lower
- B.
Relative
- C.
Absolute
- D.
Humidity
Correct Answer
D. HumidityExplanation
Increasing the level of humidity can help alleviate existing ESD (Electrostatic Discharge) problems. ESD occurs when there is a sudden flow of electricity between two objects with different electrical potentials. Higher humidity levels can help reduce the buildup of static electricity, as moisture in the air can dissipate the charge more effectively. This can prevent or minimize ESD-related issues, such as damage to electronic components or interference with sensitive electronic devices.Rate this question:
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- 12.
Components on PC boards are still current and voltage ____ even when the leads are attached to the board.
- A.
Laden
- B.
Charged
- C.
Reactive
- D.
Sensitive
Correct Answer
D. SensitiveExplanation
Components on PC boards can still be sensitive to current and voltage even when their leads are attached to the board. This means that the components can still be affected by changes in current and voltage, and may be responsive or reactive to these changes.Rate this question:
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- 13.
ESDS items shall only be handled outside of ESD protective packaging or non-protective packaging materials at ESD ___.
- A.
Control workstations
- B.
Work benches
- C.
Departments
- D.
Facilities
Correct Answer
A. Control workstationsExplanation
ESDS items should only be handled outside of ESD protective packaging or non-protective packaging materials at ESD control workstations. This suggests that control workstations are equipped with the necessary measures to prevent electrostatic discharge and protect the ESDS items. Handling these items at work benches, departments, or facilities that may not have the same level of ESD protection could result in damage to the items. Therefore, it is important to handle ESDS items only at designated control workstations to ensure their safety.Rate this question:
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- 14.
When ESDS discrete parts, circuit boards, wiring boards, modules, and uniquely shaped items are packaged, the ____ bag will be marked on both sides with an ESD label.
- A.
First plastic
- B.
Innermost
- C.
Outermost
- D.
Core
Correct Answer
C. OutermostExplanation
The correct answer is "outermost" because when packaging ESDS (Electrostatic Discharge Sensitive) items, it is important to ensure that the outermost bag is marked with an ESD label. This helps to clearly indicate that the contents of the bag are sensitive to electrostatic discharge and need to be handled with caution to prevent damage. The outermost bag acts as a protective layer for the items inside, and marking it with an ESD label helps to communicate this information to anyone handling the package.Rate this question:
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- 15.
All storage cabinets or parts bins containing ESDS items shall be marked on an outside surface clearly ____ to personnel approaching the cabinet/bin alerting them that ESDS items are inside.
- A.
Discernible
- B.
On the left
- C.
Apparent
- D.
Visible
Correct Answer
D. VisibleExplanation
The correct answer is "visible". This means that the storage cabinets or parts bins should have a marking or indication that is easily seen or noticed by personnel approaching the cabinet or bin. This is important to alert them that ESDS (Electrostatic Discharge Sensitive) items are stored inside, so they can take appropriate precautions to prevent any damage to these sensitive items.Rate this question:
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- 16.
A properly ____ ESD work station is important because it prevents failure, injury, and damage of sensitive electronic items.
- A.
Labeled
- B.
Grounded
- C.
Established
- D.
Constructed
Correct Answer
B. GroundedExplanation
A properly grounded ESD work station is important because it prevents failure, injury, and damage of sensitive electronic items. When a work station is grounded, it allows any static electricity that builds up on the surface to be safely discharged into the ground, rather than being transferred to the electronic items. This helps to eliminate the risk of electrostatic discharge, which can cause malfunctions or even permanent damage to sensitive electronics. Therefore, ensuring that the work station is grounded is crucial for maintaining the integrity and safety of electronic items.Rate this question:
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- 17.
____ are the most important item for effective static control and prevention for handling ESD items.
- A.
Static dissipative gloves
- B.
Static dissipative shoes
- C.
Personal wrist straps
- D.
Bench top ionizers
Correct Answer
C. Personal wrist strapsExplanation
Personal wrist straps are the most important item for effective static control and prevention for handling ESD items. Wrist straps are worn by individuals working with ESD-sensitive devices or components to safely discharge any static electricity that may have built up on their body. This helps to prevent damage to the sensitive electronic equipment and ensures that the static charge is safely grounded. Personal wrist straps are a crucial tool in maintaining a static-free environment and protecting ESD-sensitive items.Rate this question:
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- 18.
ESD test equipment verifies ____ of ESD control products.
- A.
Physical condition
- B.
Electrical integrity
- C.
Static discharge
- D.
Personal usage
Correct Answer
B. Electrical integrityExplanation
ESD test equipment is used to verify the electrical integrity of ESD control products. This means that the equipment checks if the ESD control products are functioning properly and effectively in preventing electrostatic discharge. It ensures that the products are able to dissipate static electricity and protect sensitive electronic components from damage. By testing the electrical integrity, the equipment ensures that the ESD control products are reliable and meet the necessary standards for ESD protection.Rate this question:
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- 19.
What will measure the impedance between neutral and the equipment ground conductors to verify the integrity of the ground point?
- A.
Test kit A
- B.
Air velocity
- C.
Charged plate monitor
- D.
Ground impedance and utility wiring verification meter
Correct Answer
D. Ground impedance and utility wiring verification meterExplanation
A ground impedance and utility wiring verification meter is used to measure the impedance between the neutral and the equipment ground conductors. This measurement helps to verify the integrity of the ground point by ensuring that the impedance is within acceptable limits. This is important for safety reasons as a low impedance ensures that any fault currents are properly grounded, protecting both the equipment and the individuals using it.Rate this question:
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- 20.
The main purpose of having a Common Ground System (CPGS) is to provide a single source of charge ____.
- A.
Dissipation
- B.
Extraction
- C.
Diversion
- D.
Filtering
Correct Answer
A. DissipationExplanation
The main purpose of having a Common Ground System (CPGS) is to provide a single source of charge dissipation. This means that the CPGS is designed to safely and efficiently dissipate or release any excess charge or electrical energy in order to prevent damage or malfunctioning of the system. By providing a centralized and reliable method of charge dissipation, the CPGS ensures that all connected devices and components are protected and operate effectively.Rate this question:
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Jan 31, 2023Quiz Edited by
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Jul 13, 2018Quiz Created by
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