last 44.

LOTO is short for "lockout/tag-on." Select one:

False

When erecting a scaffold, use ? instead of blocking to adjust to uneven grade conditions. Select one: a. adjusting screws b. castes with plain stems c. cleats d. horizontal cross braces

a. adjusting screws

The extreme heat and light which can occur while working on live parts is known as the ?

a. arc flash

To prevent the work platform boards from slipping off rolling scaffolds, they should ? . Select one: a. be cleated on the underside b. come already mounted on the scaffold c. require toeboards to hold them in place d. not be used

a. be cleated on the underside

If a "hot" wire contacts a grounded enclosure, a(n) ? results.

ground-fault

A properly installed ? has a low resistance to ground and greatly reduces the amount of current that passes through your body.

grounding conductor

Dry skin has a fairly high ? to electric current. But when skin is moist or wet, it acts as a conductor.

resistance

Improper electrical terminations lead to high ? connections, which in turn lead to electrical system failures.

resistance

What type of laser tool works best when distance of 100 feet or more

rotarty laser

The GFCI ? protect the employee from line-to-line contact hazards.

will not

A(n) ? GFCI requires the amount of current leaving the source and returning to the source to be within 5 mA of each other.

Class A

Which type of laser is best for aligning recessed outlet boxes and fixtures?

Self-leveling visible line laser

What amount of current will likely cause respiratory arrest?

40 mA to 50 mA (up to 99 mA)

Slight shock felt; not painful but disturbing. Average individual can let go. Strong involuntary reactions can lead to other injuries. These reactions best describe a current of ? .

5 milliamperes

Extreme pain, respiratory arrest, severe muscular contractions. Death is possible. These reactions best describe a current from ? to 150 milliamperes. 50

50

Occupational Safety & Health Administration (OSHA) places the threshold voltage of electric shock at ? .

50v

Which of the following would not be a factor that determines the severity of an electric shock? I. The amount of current flowing through the body II. The current's path through the body III. The length of time the body remains in the circuit IV. The current's frequency

All are factors that determine the severity of an electric shock.

Which of the following is not a potential problem that can occur with portable electric tools which might expose a worker to electrical shock?

Double insulated portable electric tools

When do the tests required by OSHA under the assured equipment grounding conductor program take place?

after repair, after damage, three months, before first use, and cord sets and receptacles essentially fixed not exposed to damage at regular intervals not to exceed six months

To understand how to make proper electrical connections, the Electrical Worker needs to understand ? . a. proper termination techniques Incorrect b. the compatibility of the connector to the conductor Incorrect c. the environment in which the connection is to be made Incorrect d. all of the above Correct

all of the above Correct

When erecting a scaffold, use ? to provide against skew. Select one: a. adjusting screws b. caster brakes or block the rollers c. horizontal cross bracing d. platform boards

c. horizontal cross bracing

The purpose of a fuse or circuit breaker is to protect the premise from fire caused by overheating wiring or from ignition due to a(n) ? circuit.

c. short

Fuses and circuit breakers are designed to protect ? .

conductors and equipment

An Arc Fault Circuit Interrupter (AFCI) is a device that monitors both the amount of current leaving the source and the amount of current returning to the source.

false

What are two recognized means of preventing injury during electrical equipment operations?

I. Grounding II. Insulation

What modern tool replaces a traditional plumb bob?

Self-leveling point-to-point laser tool

For longer alignment tasks indoors or for outside layout applications, what type of laser is recommended?

Self-leveling rotary laser

The flash protection boundary is the distance rating that refers to how far you must be away from the flash to sustain a burn that is "just curable," according to OSHA.

True

The ? is a fast-acting circuit breaker that senses small imbalances in the circuit caused by current leakage to ground and in a fraction of a second shuts off the electricity.

GFCI

? are devices that interrupt the flow of electricity within as little as 1/40 of a second to prevent electrocution.

Ground-fault circuit interrupters

What tests are required by OSHA under the assured equipment grounding conductor program? I. A continuity test to ensure that equipment grounding conductors are electrically continuous II. A strain test on all cord caps, plugs, and receptacles to ensure conductor continuity is maintained III. A test of receptacles and plugs to ensure that the equipment grounding conductor is connected to its proper terminal IV. All of the above

I. and III.

? are commonly used for both low-voltage and medium-voltage applications. They are easy to use and are frequently found where power distribution conductors terminate in transformers and power panelboards.

Lugs

Which National Fire Protection Association (NFPA) document covers safe working practices for electrical work?

NFPA 70E

Which type of laser is best for transferring points from deck to ceiling?

Self-leveling point-to-point laser

An AFCI is designed to determine if there is an arc that could start a fire in the protected circuitry

True

In addition to muscle contractions that cause "freezing," electrical shocks also can cause ? muscle reactions. These reactions can result in a wide range of other injuries from collisions or falls, including bruises, bone fractures, and even death.

involuntary

Compression connectors are also widely used within the electrical industry and can be utilized for both low-voltage and medium-voltage applications. The principle behind the compression connector is the application of ? pressure, either pneumatically or by hand, to ensure the connection.

irreversible

categories for shock protection approach boundaries to energized conductors or circuit parts

limited approach/ restricted approach

If the splice is underground, the device shall be ? for direct-burial use.

listed

The first consideration in making good electrical connections is the type of conductor ? involved. The NEC recognizes copper, aluminum, and copper-clad aluminum; each of which has different physical characteristics.

material

The ? connector utilizes mechanical pressure to establish a splice that maintains excellent mechanical and electrical properties. This type of splicing device is commonly used when tapping one conductor from another.

split-bolt Correct

When a person receives an electrical shock, sometimes the ? from that electrical shock causes the muscles to contract. This "freezing" effect makes the person unable to pull free of the circuit.

stimulation

why is difficult to measure horizontal lengthd with a tape measure

susceptible to sagging

Burns are the most common shock-related injury. An electrical accident can result in an electrical burn, arc burn, thermal contact burn, or a combination of burns.

true