Question 1

You are preparing to replace a faulty power supply unit in a desktop computer.
Which of the following is the first step you should take?

A) Remove the CPU to prevent ESD damage.
B) Remove all jewelry that may come into contact with components.
C) Locate the toxic waste instructions for the PSU.
D) Ask a coworker to assist in the repair.

B

Accepted Answer

Before starting any repair or replacement work on a desktop computer, especially when dealing with internal components like the power supply unit, it's important to remove all jewelry. This prevents any accidental electrical shorts or the possibility of causing damage through electrostatic discharge (ESD) to sensitive components. Jewelry can conduct electricity and can get caught on components, posing a risk to both the hardware and the person performing the repair.

Question 2

A company is experiencing electrical surges from the utility company that are significantly higher than the normal rated voltage level.
Which of the following devices will best mitigate the power surge at each of the workstations?

A) ESD mat
B) Power strip
C) Extension cords
D) Surge suppressor

D

Accepted Answer

Surge suppressors are specifically designed to protect electronic devices from voltage spikes. They regulate the voltage supplied to an electronic device by either blocking or shorting to ground any unwanted voltages above a safe threshold.

Question 3

Which of the following fire extinguisher classifications should be used on an electrical fire?&#10;A) Class A&#10;B) Class B&#10;C) Class C&#10;D) Class D

Accepted Answer

Class C fire extinguishers are designed for electrical fires, as they use non-conductive substances to extinguish the fire without the risk of electric shock.

Question 4

What is the best method for disposal for empty inkjet printer cartridges and empty toner cartridges?&#10;A) Place cartridges in plastic trash bags and dispose with company trash service.&#10;B) Flush each empty cartridge with water, wrap in plastic, and place in trash.&#10;C) Flush each cartridge with water and recycle with office recycling service.&#10;D) Check with local environmental officials in your area for proper disposal of these items.

Accepted Answer

The best method for disposal of empty inkjet and toner cartridges is to check with local environmental officials for proper disposal guidelines. This ensures that the disposal method complies with local regulations and supports recycling and environmentally friendly practices.

Question 5

Which of the following is a static control device used to dissipate the static charge on the workbench?&#10;A) UPS&#10;B) ESD strap&#10;C) ESD mat&#10;D) Surge suppressor

Accepted Answer

An ESD mat is a static control device used to dissipate static charge on a workbench, preventing damage to electronic components.

Question 6

A cable is running along the floor between two work areas where people walk.
Which of the following steps should be taken first?

A) Implement cable management.
B) Cut the cable and remove it.
C) Try to run the cable overhead.
D) Call the building maintenance department.

Accepted Answer

Implementing cable management is the first step to safely organize and secure the cable to prevent tripping hazards and maintain a safe walking path.

Question 7

Which of the following will best help in reducing static electricity and increase equipment reliability?&#10;A) High humidity and low temperature&#10;B) Humidity and temperature at levels comfortable for humans&#10;C) Low humidity and high temperature&#10;D) Low humidity and low temperature

Accepted Answer

Humidity and temperature levels that are comfortable for humans (typically around 45-60% humidity and 20-22°C or 68-72°F) help in reducing static electricity. Static electricity is more prevalent in low humidity environments, so maintaining a moderate humidity level is key for reducing static buildup and increasing equipment reliability.

Question 8

What is the difference between a power surge and a power sag?&#10;A) A surge is a temporary voltage increase, and a sag is a temporary voltage decrease.&#10;B) A sag is a temporary voltage increase, and a surge is a temporary voltage decrease.&#10;C) A sag and a surge are temporary voltage increases.&#10;D) A sag and a surge are temporary voltage decreases.

Accepted Answer

A power surge is a temporary increase in voltage on a power line, while a power sag, also known as a voltage sag, is a temporary decrease in voltage.

Deck 11: Safety Procedures and Environmental Concerns.