Chapter 2 Electrical Safety

The type of rubber protective equipment that is made of natural rubber of a vulcanized synthetic is __________. A) Type 1 B) Type 2 C) Type 3 D) Type 4

A) Type 1

Insulating gloves must be inspected by the user __________. A) before each use B) monthly C) yearly D) weekly

A) before each use

Which of the following is true with regard to working near cranes? A) only individuals trained in rigging should ever rig material for a lift. B) You may walk under a load as long as you move quickly. C) Personnel may be moved to upper levels using lift equipment as long as they are secured to a safety lanyard. D) Additional weights can be used to secure a crane in order to temporarily exceed its lift capacity.

A) only individuals trained in rigging should ever rig materials for a lift.

Which of the following is the threshold at which a power source is considered high voltage in the context of safety? A) 240V B) 600V C) 480V D) 120V

B) 600V

Which of the following battery byproducts can be explosive when mixed with air? A) Zinc B) Hydrogen C) Mercury D) Acid

B) Hydrogen

You are required to be evaluated by a physician to ensure that you are physically fit to use which of the following types of protective equipment? A) Filter mask B) Respirator C) Chemical apron D) Chemical goggles

B) Respirator

When a guardrail cannot be attached to a building, a solution may be to install a(n)______. A) retractable lanyard B) controlled access zone C) anchorage device D) personal fall arrest system

B) controlled access zone

NFPA 70E provides practical guidance in______. A) solvents and toxic vapors B) electrical hazard assessment C) fall protection procedures D) confined space entry

B) electrical hazard assessment

The normal beating of the heart can be upset by an electrical current as small as_______. A) 1,000mA B) 1mA C) 75mA D) 30mA

C) 75mA

What must happen before any work may be performed in a confined space? A) Installation of additional ventilation B) Shut off and lock out power sources C) Completion of a hazard review D) Classification by a qualified individual

C) Completion of a hazard review

The OSHA lockout/tagout rule protects workers from_________. A) unauthorized use B) system shutdown C) exposure to hazardous energy sources D) exposure to harmful chemicals

C) exposure to hazardous energy sources

OSHA CFR 1910 is the standard for ______. A) electronic systems B) electrical hazard assessment C) fall protection procedures D) confined space entry

C) fall protection procedures

If you bend from the waist to pick up an object weighing 20 pounds (9.07 kg), the amount of pressure applied to your lower back is__________. A) 2 pounds (0.9 kg) B) 2,000 pounds (907 kg) C) 20 pounds (9.07 kg) D) 200 pounds (90.7 kg)

D) 200 pounds (90.7 kg)

Under strict safety guidelines, which of the following should be used to discharge capacitors before working on de-energized circuits? A) A hot stick B) A test instrument C) A phasing tester D) A safety shorting probe

D) A safety shorting probe

Which of the following should have side rails that extend 36 inches above the top support point? A) Step ladders B) Scaffolds C) Painted ladders D) Straight ladders

D) Straight ladders

Which factor determines the outcome of an electrical shock? A) The raceway system B) The size of the electrical equipment being used C) Which phase is involved D) The amount of current

D) The amount of current

For safety, assume that any facility constructed before 1980 contains__________ . A) confined spaces B) GFCIs C) PCBs D) asbestos

D) asbestos

Where insulating protective equipment may be damaged, it_________. A) may not be used B) may be used but must be discarded at the end of the shift C) may be used but must be inspected for damage daily D) requires its own protection (e.g., leather gauntlets over rubber gloves)

D) requires its own protection (e.g., leather gauntlets over rubber gloves)

If the wooden handle on a tool is cracked, ___________. A) it may be safely used until it breaks B) it can be repaired with electrical tape C) it can be used until the crack exceeds 1/4" (6 mm) D) tag the tool out of service and do not use it

D) tag the tool out of service and do not use it

A live-dead-live test is conducted in order to_________. A) verify the test instrument operation B) disconnect switches and fuses C) make sure the capacitors are discharged D) verify that a circuit is de-energized

D) verify that a circuit is de-energized