Safety in Computer Technology

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Questions and Answers

Which electrical factor is considered dangerous if it exceeds 30 volts?

Resistance

Voltage (correct)

Power

Current

Which step should NOT be taken immediately after an electrical shock occurs?

Turn off the power immediately

Call for help or notify a supervisor

Touch the victim to check for responsiveness (correct)

Use a non-conductive material to remove the victim

What is the lethal current threshold in milliamps (mA)?

30 mA

100 mA

50 mA (correct)

5 mA

What should you do first in case of an electrical fire?

Pull the fire alarm and evacuate Signup and view all the answers

What is one of the key safety measures to follow when using a soldering iron?

Always unplug the soldering iron after use and place it in its holder. Signup and view all the answers

What is the primary role of a fire extinguisher in a workplace?

To contain and extinguish fires safely Signup and view all the answers

What should you do if you are unsure about the safety measures while working with electrical equipment?

Ask your instructor for guidance. Signup and view all the answers

Which type of fire extinguisher would be used for electrical equipment fires?

Class C Signup and view all the answers

What effect does lower resistance have on electron flow?

It increases electron flow Signup and view all the answers

Which of the following is not a recommended practice for electrical safety in the home?

Disconnect cords from the wall by pulling on the cord. Signup and view all the answers

In case of an electrical shock, why is it crucial to remove the victim from contact with electricity first?

To prevent further shock to the victim Signup and view all the answers

When soldering or de-soldering, what should be avoided to ensure safety?

Breathing in solder fumes. Signup and view all the answers

What is an appropriate method for managing electrical cords in the home?

Using protected power bars instead of tap-off plugs. Signup and view all the answers

Which area should not have unprotected electrical appliances used?

The bathroom. Signup and view all the answers

What should always be done before replacing blown fuses?

Turn off the main electrical power switch. Signup and view all the answers

What is the best practice regarding the arrangement of your work area when soldering?

Keep everything within easy reach to avoid reaching over hot tools. Signup and view all the answers

What should you do as soon as you become aware of a safety hazard?

Inform the teacher or supervisor immediately Signup and view all the answers

When is it acceptable to work on live circuits?

Only when absolutely necessary and under supervision Signup and view all the answers

What is a sign that electrical equipment or wiring may be damaged?

Warm plugs or outlets Signup and view all the answers

How should you handle a power cord when unplugging it?

Grasp the plastic insulation around the plug Signup and view all the answers

What should you do before applying power to electrical connections?

Make sure all connections are secure Signup and view all the answers

Why is it advised to remove metal jewelry when working on energized circuits?

Because metal jewelry may conduct electricity Signup and view all the answers

What type of clothing is recommended when working with machinery or soldering?

Snug clothing to avoid catching in equipment Signup and view all the answers

In what type of area should electrical or computer equipment not be operated?

A wet or damp area Signup and view all the answers

Study Notes

General Safety Guidelines

Prioritize safety for students, staff, and all individuals in environments with hazardous materials or equipment.
Inform the teacher or supervisor of any safety hazards or injuries immediately.
Maintain a clean workspace to prevent accidents.
Be aware of the locations of safety equipment, such as phones, fire extinguishers, and fire exits.
Wear safety eye protection when soldering or using power tools; avoid loose clothing to prevent snags or burns.
Secure long hair when operating machinery or soldering.

Computer and Electrical Safety

Handle all computer and electrical equipment with caution as they may involve lethal voltages.
Avoid working on "live" circuits unless absolutely necessary and under supervision.
Always test "dead" circuits with a tester before touching them; never bypass electrical safety devices.
Use cords properly: grasp by the plastic insulation, avoiding pulling the cord.
Inspect equipment and wires for damage before use; warm plugs or outlets indicate potential hazards.
Ensure electrical connections are secure before powering devices and use grounded tools.

Safe Operational Practices

Avoid operating electrical equipment near fluids or in wet conditions to reduce shock risks.
Stand on dry, non-conductive surfaces during electrical work.
Remove metal jewelry when working on electrically energized circuits due to conductivity.
Prevent tripping hazards by managing the placement of extension cords.

Soldering Safety Protocols

Solder may contain lead; avoid inhaling fumes and use solder sparingly.
Allow only one person at a soldering station and clamp work securely.
Keep soldering tools within reach and never leave the soldering iron unattended; unplug after use.
Wear safety glasses when using power tools, including soldering irons.

Home Electrical Safety

Electrical equipment is generally safe if used and maintained properly; hazards arise from negligence.
Avoid hiding cords under rugs and always pull on the plug, not the cord, to disconnect appliances.
Use protective measures such as covering unused outlets and turning off power before servicing electrical devices.
Replace frayed cords and avoid overloading outlets with multiple devices.

Understanding Electrical Shock

Electrical shock severity depends on voltage, current, and resistance.
Voltages over 30 are dangerous; currents above 5 mA can cause harm, while 50 mA is typically lethal.
Lower resistance in wet conditions increases the risk of shock.

Emergency Response to Electrical Shock

Immediately turn off the power if someone is shocked; if unable, use non-conductive material to remove them from contact.
Do not touch the victim until power is off, then start first-aid and alert authorities.

Electrical Fire Safety Measures

In an electrical fire, evacuate, activate the fire alarm, and remain calm.
Never use water on electrical fires; use an appropriate fire extinguisher aimed at the base of the fire.
Familiarize with different fire extinguisher classes (A, B, C, ABC) for various fire types.

Additional Resources

Refer to instructional videos on electrical safety and fire extinguisher use for further guidance.

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Description

This quiz covers essential safety practices for students and staff working with potentially hazardous materials and equipment in computer technology environments. It emphasizes the importance of awareness and adherence to safety procedures. Assess your knowledge on safety protocols to ensure a secure working environment.