Why is overloading electrical plugs considered dangerous practice?

• It can cause short circuits.

• It can overheat and cause fire.

• It can cause electrical shock.

• it can be a tripping hazard.

Which of the following is NOT a part of the electrical power distribution network?

• Step-down transformers.

• Electrical substations.

• Steam turbines.

• Power lines.

Which of the following determines the severity of an electrical shock?

• Amount of current flowing in Amps.

• Duration of the current flow.

• Path of the current trough the body.

• All of the above.

What is the classification of electrical equipment fires under the American NFPA system?

• Class A

• Class C

• Class D

• Class K

What are the combustible materials in Class B fires according to the American NFPA classification?

• Paper and textile.

• Flammable liquids.

• Cooking oils and fats.

• Wood and coal.

Which type of fire extinguisher is best suited for putting out paper or plastic fires?

• Water

• Foam

• Wet chemicals

• Carbon dioxide

What is the best case use of the CO₂ fire extinguisher?

• Burning paper.

• Heavy oil fire.

• Electronic equipment fire.

• Commercial kitchen fire.

Which of the following should NOT be worn in the workshop during practical tasks?

• Safety shoes.

• Loose clothes and ties.

• Watches and jewelry.

• Hearing protection.

What type of lab safety signs uses yellow triangle with black writing?

• Mandatory

• Warning

• Prohibition

• Fire

Which type of fire extinguisher should not be used in confined spaces?

• Water

• Foam

• Dry powder

• Carbon dioxide (CO₂)