ESD Training Test

Explanation
Electrostatic discharge (ESD) occurs when there is a sudden flow of electricity between two objects with different electrical charges. In this example, when someone walks across a carpet, their body accumulates static electricity. When they touch a metal doorknob, the excess charge is discharged, resulting in a small shock or "zap" sensation. This phenomenon is a common occurrence and is indeed an example of electrostatic discharge.

Explanation
Static charges are generated when two surfaces come into contact and then separate. This movement of electrons causes an imbalance, resulting in one surface having a positive charge (deficiency of electrons) and the other surface having a negative charge (excess of electrons). Therefore, the statement is true.

Explanation
When electrostatic charges come into balance, it does not necessarily lead to an electrostatic discharge event. Electrostatic discharge can occur when there is a sudden flow of electricity between two objects with different charges. This discharge can result in the release of heat, light, and sound. Therefore, the statement that an electrostatic discharge event creates no heat is false.

Explanation
A Faraday cage is an enclosure that is designed to block electromagnetic fields. It is typically made of conductive materials, such as metal, and is used to protect sensitive electronic equipment from external electromagnetic interference. The chassis/outer case of an assembly with protective caps in place can act as a Faraday cage by providing a shield against electromagnetic waves. The protective caps further enhance the cage's ability to block electromagnetic fields.

Explanation
Lightning is a powerful example of an ESD (Electrostatic Discharge) event because it involves the discharge of a massive amount of electrical energy between the atmosphere and the ground. This discharge generates intense heat and produces a bright flash of light, which is visible as lightning. Therefore, the statement that lightning creates lots of heat and light is true.

Explanation
The correct answer is that ESD marking should be applied on two sides of the outside container and one label should be on the intermediate. This ensures that the ESD assets are properly marked and identified for easy recognition and handling. By marking both sides of the outside container, it allows for visibility from different angles and ensures that the marking is not missed. Additionally, having a label on the intermediate further enhances the visibility and identification of the ESD asset.

Explanation
The given answer is false because conductors are materials that allow electrical current to flow easily, not plastics and styrofoam. Conductors are typically metals such as copper and aluminum, while plastics and styrofoam are insulators that do not allow the flow of electrical current.

Explanation
The given statement is false. Insulators are materials that do not allow electrical current to flow easily but they can be grounded. Examples of insulators include rubber, glass, and plastic. Metals are conductors, not insulators. People can act as insulators under certain conditions, but they can also conduct electricity.

Explanation
It is false that a person walking across a carpeted floor can generate a voltage greater than 100 volts of electrostatic charge on their body. While walking on a carpeted floor can generate static electricity, the voltage generated is typically much lower than 100 volts.

Explanation
The statement is true because it states that charges on a person frequently discharge, but for the person to feel the zap, a discharge must be about 3000 volts. This implies that the person will only feel the electric shock if the discharge reaches a certain voltage threshold of 3000 volts.

Explanation
ESD stands for ElectroStatic Discharge, which refers to the sudden flow of electricity between two objects with different electric potentials. In manufacturing, especially when handling electronic components, ESD can be damaging as it can cause unseen damage to sensitive electronic circuits. These discharges are not easily detectable by humans, making ESD a hidden enemy in such industries. Therefore, the statement "In manufacturing handling electronic components, ESD is the hidden enemy as there can easily be damaging ElectroStatic discharges that a person cannot detect" is true.

Explanation
Passing an inspection test does not necessarily mean that the ESD sensitive item has experienced a catastrophic ESD failure. It could mean that the item has successfully passed the test without any failure or damage. Therefore, the statement is false.

Explanation
Passing an inspection test does not guarantee that the ESD sensitive item has not experienced a latent ESD defect. It is possible for the item to have a latent defect that is not detected during the inspection. Therefore, the statement is false.

Explanation
ESD sensitive items may pass inspections in the factory but still have latent defects that can cause them to fail in the field. This can lead to significant expenses in terms of warranty claims, field service repairs, and a decrease in customer satisfaction. Therefore, the statement is true.

Explanation
This statement is true because manufacturing ESD sensitive items without proper ESD control can result in damage to the items. ESD (electrostatic discharge) can cause a buildup of static electricity, which can discharge and damage sensitive electronic components. Similarly, if a physician does not follow sterilization procedures during surgery, it can lead to infections and complications for the patient. Both scenarios emphasize the importance of following proper procedures to prevent damage or harm.

Explanation
The explanation for the given correct answer is that when handling ESD sensitive items, it is important to be grounded to prevent the buildup of static electricity. This can be done by wearing a wrist strap connected to a grounding point at an ESD protective workstation. Being grounded helps to dissipate any static charges that may otherwise damage sensitive electronic components. Therefore, it is true that a person should always be grounded and wear a wrist strap when seated at an ESD protected workstation.

Explanation
It is not okay to use staples to close or fasten tags to an ESD (Electrostatic Discharge) package. Staples can conduct electricity and create a potential risk of damaging the sensitive electronic components inside the package. To prevent ESD damage, it is recommended to use ESD-safe methods for closing or fastening tags, such as adhesive tape or ESD-safe ties.

Explanation
The statement "Make sure to always ground insulators" is incorrect. Insulators are materials that do not conduct electricity, so grounding them would not have any effect. Grounding is typically done for conductive materials to prevent the buildup of static electricity or to provide a path for electrical faults to safely discharge. Insulators, on the other hand, are used to prevent the flow of electricity and are not typically grounded. Therefore, the correct answer is False.

Explanation
Allowing strangers into the work area and allowing them to handle products as they please would not be a responsible or professional approach. It would likely compromise the quality of the products and potentially lead to safety hazards. It is important to have proper security measures and protocols in place to ensure the integrity of the work area and the products being worked on.

Explanation
Regular plastic bags have a high level of static electricity charge, which makes them insulators. In an ESD (electrostatic discharge) protected area, it is crucial to minimize static electricity to prevent damage to sensitive electronic components. Allowing regular plastic bags in such an area would increase the risk of electrostatic discharge and potential damage to the equipment. Therefore, it is true that regular plastic bags should not be permitted in an ESD protected area.

Explanation
ESD Shielding Bags are designed to protect electronic components from electrostatic discharge. These bags are made from materials that are conductive or dissipative, which means they can safely dissipate any electrostatic charge that may be present on the surface of the bag. When the bag is closed, it acts as a barrier, preventing any electrostatic charges from entering or leaving the bag. The charge on the exterior of the bag can be safely removed by a grounded person or by placing the bag on a properly grounded ESD mat. Therefore, the statement is true.

Explanation
Wrist straps and foot grounders are used to prevent the buildup of static electricity and to protect sensitive electronic equipment. Testing them daily ensures that they are functioning properly and providing the necessary protection. By understanding and correcting any failure, you are ensuring that you are properly grounded and minimizing the risk of damaging equipment or causing an electrostatic discharge. Notifying your supervisor if you are unable to correct any failure is important as they may need to provide further instructions or replace the equipment. Therefore, the statement is true.

Explanation
The explanation for the given answer "False" is that the ESD association does not believe that high charging personal items should be allowed in an ESD protected area, as they can potentially damage products. ESD protected areas are designed to minimize the risk of electrostatic discharge, which can cause damage to sensitive electronic components. Therefore, it is important to restrict the presence of personal items that can generate high levels of static electricity in these areas.

Explanation
An ESD (Electrostatic Discharge) protected area is a controlled environment where measures are taken to prevent damage to electronic components from electrostatic discharge. To maintain the effectiveness of this area, it is important that only trained or escorted individuals are allowed inside. This ensures that proper protocols and procedures are followed to minimize the risk of electrostatic discharge and potential damage to sensitive equipment. Allowing untrained or unescorted individuals in the area could increase the chances of accidents or mishandling, compromising the protection provided by the ESD measures. Therefore, the statement is true.

Explanation
ESD (Electrostatic Discharge) sensitive items are susceptible to damage from static electricity. Shielded ESD packaging provides a protective barrier against electrostatic discharge, preventing potential damage to the sensitive items stored or transported inside. Therefore, it is necessary to use shielded ESD packaging when handling ESD sensitive items outside of an ESD protected area to ensure their safety.

Explanation
When the serviceability of an ESD item is in doubt, inspection personnel will send the item to maintenance for a functional check. This means that if there are any concerns about the item's ability to perform its intended function, it will be given to maintenance to assess its functionality and determine if any repairs or adjustments are necessary. Therefore, the statement "True" is the correct answer.