General Safety Questions

If you do not know whether a circuit is on or off, what should you do first?
Measure the circuit with a voltmeter.
Measure the circuit with an ohmmeter.
Check the circuit with a continuity tester.
Lick your fingers and check the wires.

Measure the circuit with a voltmeter.

If a tool does not seem to be working correctly, you should

Continue to use the tool.
Label the tool that is broken and inform the instructor.
Give the tool to someone else to use.
Put the tool back in the box and quit for the day.

Label the tool that is broken and inform the instructor.

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

Obtain instruction from the teacher on how to use the piece of equipment.
Read the equipment instructions.
Ask the instructor for clarification.
All of the above

All of the above

Wearing jewelry while working with electrical circuits may

Accidentally cause a short across components.
Create connections with circuits that you did not know how to connect.
Accidentally catch on moving parts or wires that may be pulled from the work.
Both A and C.

Both A and C.

Before checking any electrical circuit, you should

Disconnect the power to the circuit.
Ask a partner stand guard over the power disconnect so that no one else reconnects the circuit.
Test the circuit with a meter to make sure that no current is flowing.
All of the above

Test the circuit with a meter to make sure that no current is flowing.

What is the maximum current level that a human body can withstand before sustaining injury?
100 uA
1.0 mA
15 mA
50 mA

15 mA

Which of the following should be used to extinguish an electrical fire?
Water
Class A fire extinguisher
Class B fire extinguisher
Class C fire extinguisher

Class C fire extinguisher

Material Safety Data Sheets will indicate

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

All of the above

Which of the following is true?

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.
All of the above

All of the above

Taking your time while working will prevent accidents by

Allowing you to double check your connections.
Allowing you to make your circuits more neatly.
Allowing you to double check all part numbers and values.
All of the above

All of the above

Which of the following is not a piece of clothing that you should wear in an electronics laboratory?

Rubber-soled shoes
Tight clothing with rolled up sleeves
Poncho style sweater
Safety glasses

Poncho style sweater

The purpose of the grounding pin on a plug is to

Send stray currents to the earth ground.
Annoy you when you are working in a house with no ground pinhole in the outlet.
There is no purpose; cut off the pin.
All of the above

Send stray currents to the earth ground.

When working with electrical circuits and a liquid spill occurs, you should first

Run like a mad person.
Turn off the power.
Continue working; there is no danger.
Go to the hardware store and buy a flashlight.

Turn off the power.

When a power cord is broken or frayed,

Continue to use the cord.
Label the broken section, "Do Not Use", and notify the instructor.
Pour water on the damaged section to see if it produces a shock.
All of the above

Label the broken section, "Do Not Use", and notify the instructor.

All accidents should be brought to the attention of the instructor so that

The teacher can document the injury for insurance purposes.
The teacher can administer first aid or send the student to the school nurse.
Improvements can be made to avoid future injuries.
All of the above

All of the above

Keeping the laboratory clean and neat

Allows others to easily locate materials.
Minimizes injuries caused by unknown obstacles.
A and B are not important issues.
Both A and B are both important issues.

Both A and B are both important issues.

Before picking up a capacitor, you should

Check the capacitor's temperature.
Pour water on the capacitor.
Short out the leads to make sure the capacitor is discharged.
All of the above

Short out the leads to make sure the capacitor is discharged.

Which of the following is allowable behavior in the electronics laboratory?

Setting up failing circuits as practical jokes.
Running races around the classroom.
Carefully building and documenting all circuits.
Leaving work out overnight in a space that someone else will use.

Carefully building and documenting all circuits.

Where would you check if you needed the proper handling instructions for a lead acid battery?

Data Sheet
Material Safety Data Sheet
Textbook
Nuts and Volts Magazine

Material Safety Data Sheet

If in doubt, ask the instructor.

True

Your body can be a conductor of electricity.

True

Cuts in the insulation of a power cord can be safely repaired with electrical tape.

False

It takes 20 or more amps of electricity passing through your body to cause your breathing to stop and possible death.

False

A ground fault occurs when electricity goes to the ground by the electrical systems neutral wire.

False

GFCI, or ground fault circuit interrupt, should be used in school and home kitchens, bathrooms and outdoors.

True

You cannot overload the wires of an undersized extension cord without tripping a circuit breaker.

False

A circuit breaker is an automatically operated switch that will stop the electricity from flowing if the amount of current exceeds the rated capacity.

True

Electricity requires an open circuit in order to flow.

False

5 amps is enough electricity to cause your breathing. to stop and possibly death.

True

A set of receptacles on a single run of wiring is called a circuit.

False

The electricity for an electrical receptacle is alternating current.

True