NCCER PRACTICE EXAM PT 2

Which of the following is not one of the Focus Four on a construction site?

• Chemical burns

• Electric shock

• Being crushed or struck by falling or flying objects

• Falls

A shock of 5 mA can cause injury through ______.

• electrical burns

• involuntary movement

• suffocation

• respiratory arrest

If a person’s heart begins to fibrillate due to an electrical shock, the solution is to ______.

• leave the person alone until the fibrillation stops

• have a qualified person use a defibrillator

• immerse the person in ice water

• use the Heimlich maneuver

Low-voltage conductors ______.

• are unlikely to cause injury if rubber-soled shoes are worn

• are responsible for most electrocution deaths due to the frequency of contact

• are not powerful enough to cause death from electrocution

• must exceed 480V to cause death

A machine guard is a type of ______.

• hazard elimination

• engineering control

• administrative control

• hazard substitution

The least effective method of preventing risk is through the use of ______.

• elimination

• engineering controls

• PPE

• substitution

The type of hard hat that can withstand a voltage of 20,000VAC for three minutes is a ______.

• Class A

• Class G

• Class C

• Class E

Tags

NGSS.HS-PS2-5

A work permit is a type of ______.

• hazard substitution

• engineering control

• PPE

• administrative control

What are the minimum and maximum distances that a scaffold plank can extend beyond its end support?

• 6"; 10"

• 8"; 12"

• 6"; 12"

• 4"; 8"

Which of the following applies in a LOTO procedure?

• If several employees are involved, the LOTO equipment is applied only by the first employee to arrive at the disconnect.

• LOTO devices applied by one employee can be removed by another employee as long as it can be verified that the first employee has left for the day.

• Only the supervisor can install LOTO devices.

• LOTO devices are installed by every employee involved in the work.