Quiz 1.1.1 General Safety in the Electronics Classroom

What is the maximum current level that a human body can withstand before sustaining injury?

15 mA

It is a good practice in an electronics classroom to:

Always follow procedure. Investigate before you act. Read and review all datasheets and service manuals. When in doubt, ask your instructor

Certain devices in an electronics classroom such as capacitors can store a lethal amount of charge. When handling a capacitor you will want to ensure that the device is uncharged. How do you make certain a capacitor is discharged before handling?

Ask your instructor.

You are getting ready to power another student's electrical circuit in this class, but you are not sure of the voltage necessary to use. Students in this class should always use:

Check with the other student who created it or the instructor. The design may require different voltages based on what it does, and how it's designed

A large voltage is applied to a circuit and a fire is started on a circuit board in the lab. When you inform your instructor, which of the following should the instructor use to extinguish an electrical fire?

Class C fire extinguisher.

Which of the following is appropriate for working in an electronics workspace?

Clothing that is not loose and no jewelry.

Your partner has been working on your group's circuit and has left the work area. Before you begin working on the circuit, what should you do to ensure that the circuit is not active and prevent yourself from getting a shock?

Disconnect the power source.

What are the types of injury that are most common in an electronics classroom?

Electrical shock. Minor burns from active electrical components.

Chemicals, materials, and processes in an electrical lab can be dangerous. Which of the following is not a potential hazard in typical electronics classrooms?

Falling objects.

It is important to keep your workspace clean and organized in an electronics classroom. Which of the following is not a reason for doing so?

It gives students something to do.

You notice that the cord of your soldering iron is frayed and possibly broken. What should be done next?

Label the broken section and notify the instructor.

You used a tool and it inadvertently became damaged. What should be the next action for you to take?

Label the tool that is broken and inform the instructor.

When you enter the electronics classroom, you notice there is water on the floor near an electrical outlet. The roof appears to be leaking. Which of the following should be done first?

Make sure no one enters and turn the power off to the classroom at the circuit breaker.

If you have not been given instruction on a tool or piece of equipment in the laboratory, you should:

Not use the tool until you have had proper instruction.

Which of the following is the appropriate scenario for wearing safety glasses in an electronics classroom?

Safety glasses or goggles should be worn to prevent eye injuries from chemicals that splash. Safety glasses or goggles should be worn when using tools that may cause objects to be thrown. Safety glasses or goggles should be used when soldering components.

Why should the students not rush? Why should students take their time when working in an electronics classroom?

Taking your time allows you to double check your connections and to reduce the need for troubleshooting later. Taking your time allows you to create your circuits more neatly. This allows you to pick up where you left of last time more easily. Taking your time allows you to double check all part numbers and values. A common error.

A student obtained an injury in the electrical classroom. The accident should be brought to the attention of the instructor so that:

The teacher can document the injury. The teacher can administer first aid. The teacher can make sure other students are not injured.

The electrical cord for a soldering iron has a grounding prong. However the extension cord you are trying to plug into only has only a place for 2 prongs (no grounding prong). What should you do in order to plug in the tool?

Use an appropriate adapter/extension cord.

Chemicals can be used to etch circuit board. Which of the following should be done before using the chemicals in an electronics classroom?

Wear goggles and a lab coat to protect from potential spills. Read all instructions that come with the chemical. Read the Material Safety Data Sheet to prepare for emergencies.

Before working with a chemical or solder, a student obtained a Material Safety Data Sheet. Which of the following will the student find on this document?

What the chemical is made of. The first aid procedure that you should follow. How to handle the material.