Modern Commercial Chapter 2

The first step in preventing accidents is to ____.

• initiate first aid to injured coworkers

• take appropriate steps to protect yourself from hazards

• identify the potential hazards at the end of the day

• identify the potential hazards before beginning work

Trenches, tunnels, and manholes are examples of ____.

• confined spaces

• open spaces

• places electricians should not enter

• None are correct.

The two most dangerous electrical hazards are ____.

• electrocutions and falling

• shocks and explosions

• shocks and falling

• electrocutions and explosions

The severity of electrical shock will increase if the ____.

• floor is wet

• floor is dry

• worker releases the shocking equipment immediately

• current path is away from the heart

The arc and explosion of a high-voltage short circuit is hazardous because ____.

• a tremendous amount of heat can be generated

• the sudden expansion of air may cause enough noise to cause loss of hearing

• a nearby worker could be thrown back into adjacent equipment

• All are correct.

The procedures that prevent a circuit from being connected are called ____.

• lockout/tellout

• hangout/blockout

• lockout/tagout

• tagout/keepout

Proper clothing will protect you by ____.

• having multiple pockets to store tools

• minimizing the amount of exposed skin

• incorporating a large number of exposed zippers so you can quickly escape burning clothes

• having short sleeves so you can move more freely

If a worker is seriously injured, remain calm and call for help as soon as possible.

• True

• False

If a shock victim’s muscles are paralyzed and they are still in contact with the electrical source, stop the flow of electricity.

• True

• False

If a shock victim is still in contact with the electrical source, open the circuit.

• True

• False