Job Information Level 1: Lesson 6 The Reality of Electrical Shock Flashcards
Electricity has long been recognized as a serious workplace hazard, exposing employees to electric shock, electrocution, burns, fires, and explosions.
Select one:
True
False
True
In 1999, the Bureau of Labor Statistics reported that ? died from electrocutions at work, accounting for almost ? of all on-the-job fatalities that year.
Select one:
a.
27 workers / 5%
b.
278 workers / 5%
c.
278 workers / 10%
d.
2,780 workers/ 15%
278 workers / 5%
A common but perhaps overlooked conductor is the surface or subsurface of the ? .
Select one:
a.
building foundation
b.
building steel
t
c.
Earth
d.
grounding electrode conductor
Earth
Dry skin has a fairly high ? to electric current. But when skin is moist or wet, it acts as a conductor.
Select one:
a.
capacitance
b.
conductance
c.
inductance
d.
resistance
resistance
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
Select one:
a.
II. is not a factor that determines the severity of an electric shock.
b.
II. and IV. are not factors that determine the severity of an electric shock.
c.
III. is not a factor that determines the severity of an electric shock.
d.
IV. is not a factor that determines the severity of an electric shock.
e.
All are factors that determine the severity of an electric shock.
All are factors that determine the severity of an electric shock.
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 ? .
Select one:
a.
5 milliamperes
b.
8 milliamperes
c.
10 milliamperes
d.
12 milliamperes
5 milliamperes
Extreme pain, respiratory arrest, severe muscular contractions. Death is possible. These reactions best describe a current from ? to 150 milliamperes.
Select one:
a.
10
b.
30
c.
40
d.
50
50
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.
Select one:
True
False
True
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.
Select one:
a.
heat
b.
resistance
c.
stimulation
d.
voltage
stimulation
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.
Select one:
a.
controlled
b.
involuntary
c.
voluntary
d.
weak
involuntary
A severe shock can cause considerably more damage than meets the eye. A victim may suffer internal hemorrhages and destruction of tissues, nerves, and muscles that are not readily visible.
Select one:
True
False
True
Most electrical accidents result from ? .
Select one:
a.
unsafe environment
b.
unsafe equipment or installation
c.
unsafe work practices
d.
all of the above
all of the above
Grounding is normally a ? protective measure to protect against electric shock. It does not guarantee that you won’t get a shock or be injured or killed by an electrical current.
Select one:
a.
first
b.
preliminary
c.
primary
d.
secondary
secondary
Fuses and circuit breakers are designed to protect ? .
Select one:
a.
conductors only
b.
conductors and equipment
c.
personnel
d.
all of the above
conductors and equipment
? are devices that interrupt the flow of electricity within as little as 1/40 of a second to prevent electrocution.
Select one:
a.
Arc-fault circuit interrupters
b.
Circuit breakers
c.
Fuses
d.
Ground-fault circuit interrupters
Ground-fault circuit interrupters
