electrical safety questions Flashcards
- Emergency responders should wait for a utility company representative to arrive
before responding to a substation fire.
TRUE___ FALSE___
TRUE
- Do not touch any vehicle or apparatus that is in contact with electrical wires since
contact can result in electric shock.
TRUE___ FALSE___
TRUE
- Straight streams from fire hoses are encouraged when energized electrical
equipment is encountered.
TRUE___ FALSE___
FALSE
- Care must be exercised when raising and lowering ladders, hose lines or equipment
near overhead lines.
TRUE___ FALSE___
TRUE
- Proceed carefully in an area where wires are down and be aware of any tingling
sensations felt in the feet.
TRUE___ FALSE___
TRUE
- Voltage decreases as the distance from the point of contact increases.
TRUE___ FALSE___
TRUE
- Step potential is created when current from a downed power line makes direct contact with the ground.
TRUE_X__ FALSE___
TRUE
- Burning wire insulation emits smoke that is non-toxic. TRUE___ FALSE__
FALSE
- There is never a hazard risk in low-voltage conditions. TRUE___ FALSE___
FALSE
- Electricity is always seeking:
A - New power sources
B - Higher elevation
C The path of least resistance to the ground D - None of the above
C The path of least resistance to the ground
- Electric meters are not to be:
A - Hard-wired
B - Read
C - Removed
D - Mounted
C - Removed
- A portable fire extinguisher used on energized electrical equipment must be rated Class:
A-A
B-B
C-C
D-D
C-C
- The coating on wire conductors is considered:
A - Protection against electric shock
B - Weatherproofing
C - Electromagnetic field-shielding
D - None of the above
B - Weatherproofing
- The hazard in a substation is:
A - Large amounts of oil
B - High voltage
C - Porcelain insulators
D - All of the above
D - All of the above
- Emergency responders are required to have anyone who has received an electric shock to:
A - Go home and rest
B - Go to local drug store for medication
C - Go to a hospital for observation
D - None of the above
C - Go to a hospital for observation
- The safe distance from a contact point of downed distribution wires or electrical equipment is:
A - 15 Feet
B - 20 Feet
C - 30 Feet
D - None of the above
C - 30 Feet
- The safest course of action for a line down on a vehicle:
A - Stay in vehicle
B - Pull wire from vehicle with non-conducting tool
C - Drive away
D - Put on insulated boots
A - Stay in vehicle
According to the Electrical Safety Handbook, ___________ is similar to the effect of friction on the flow of water inn a pipe. (Water flows more freely in a large pipe than a small one.) Different materials have different resistance to the flow of electricity. Very high resistance materials are called insulators, while the low resistance materials are called conductors. Resistance is measured in ohms.
A. Resistance
B. Current
C. Voltage
D. Ground
A. Resistance
According to the Electrical Safety Handbook, ________ is the process of mechanically connecting isolated wires and equipment to the earth, with sufficient capacity to carry any fault current and to ensure the wires and equipment remain at the same potential (same voltage) as the earth (ground).
A. Resistance
B. Current
C. Voltage
D. Ground
D. Ground
According to the Electrical Safety Handbook, ________ is the difference in electrical potential between two points in a circuit. It is the force that causes the flow of electricity, and it is measured in volts. Can be compared to water pressure.
A. Resistance
B. Current
C. Voltage
D. Ground
C. Voltage
According to the Electrical Safety Handbook, ________ is a flow of electrical charge. It can be compared to the rate of flow of water in a pipe. Current is typically measures in amperes (or amps).
A. Resistance
B. Current
C. Voltage
D. Ground
B. Current
According to the Electrical Safety Handbook, electrical hazards are created when electrical equipment or wires have become faulty. Which of the following examples are correct that can lead to electrical hazards?
A) Worn out or deteriorated
B) Improperly installed
C) Adverse weather/natural events exposure
D) All of the above
D
According to the Electrical Safety Handbook, overloading of electrical conductors and motors accounts for the majority fires caused by ___________. There is a danger when the amount of electrical current exceeds the capacity conductors and equipment are designed to carry.
A. Explosion
B. Overheating
C. Dizzling
D. Expansion
B. Overheating
According to the Electrical Safety Handbook, which of the following is not an example of an insulator?
A. Gold
B. Silber
C. Conduit
D. Grounding
A. Gold
According to the Electrical Safety Handbook, because electricity takes all paths to ground, electrical systems use multiple safety systems to deal with system faults. Conductive _____ rods are one component used to ensure that any stray electricity is returned to earth.
A. Insulting
B. Growing
C. Current
D. Grounding
grounding
According to the Electrical Safety Handbook, related electricity on the ground to a rippling water in a pool is attempting to explain the effect known as “ ______ gradient”. It is also referred to as “ground gradient”
A. Bionic
B. Potencial
C. Step & Touch
D. Laddering
B. Potencial
According to the Electrical Safety Handbook, the potential gradient, or voltage difference, creates two problems known as “ ____________ potential” and “__________ potential”
A. Step & Touch
B. Ground ladder
C. Grounding current
D. Step & Go
A. Step & touch
According to the Electrical Safety Handbook, the further apart that “X” and “Y” are, the greater the electrical contact hazard. This effect is referred to as “ potential”
A. Touch
B. Ground
C. Step
D. Run
C. Step
According to the Electrical Safety Handbook, a victim exposed to a large electric arc can e injured by the intense heat, molten metal splatter or by ultraviolet rays. The effect of electricity on the body and the severity of the shock depends on the:
A) Condition of the skin
B) Pressure of the body against the source
C) Moisture level of the surface of the skin
D) All of the above
D
According to the Electrical Safety Handbook, in a manner similar to step potential, electricity would flow through your body if you were to pkace your hand on an energized source, while your feet were at some distance apart from the source. The electricity would flow through the hand, arm, chest, abdomen, leg and foot to the ground. The difference in voltage (potential difference) in this case is referred to as “ ______ potential”
A. Touch
B. Ground
C. Step
D. Run
A. Touch
According to the Electrical Safety Handbook, any victim of electrical shock should be assessed for the following effects of the body except for:
A. Blindness from the sheer brilliance of the flash called “dazzle”
B. Permanent blindness from the sheer brilliance of the flash called “dazzle”
C. Permanent blindness from the flash called “dazzle”
D. Partial blindness from the sheer brilliance of the flash called “dazzle”
D. Permanent blindness from the sheer brilliance of the flash called “dazzle”
According to the Electrical Safety Handbook, any victim of electrical arc flash should be assessed for the following effects on the body except for:
A. Slight tingling sensation
B. Slight ringling sensation
C. Slant tingling sensation
D. Slight tingling motion
A. Slight tingling sensation
According to the Electrical Safety Handbook, ladders and stretchers, due to their length, can present significant “___________and ____________ potential” hazards and must be kept away from downed power lines
A. Step & Touch
B. Ground ladder
C. Grounding current
D. Step & Go
A. Step & touch
According to the Electrical Safety Handbook, portable Generators should be of the _________
___ type.
A. Step & Touch
B. Bonded neutral
C. Grounding current
D. Step & Go
B. Bonded neutral
According to the Electrical Safety Handbook, portable Generators should be of the _________ type.
A. Step & Touch
B. Bonded
C. Grounding current
D. Step & Go
B. Bonded
According to the Electrical Safety Handbook, which of the following would be considered areas that may contain open energized equipment:
A) Electrical Vaults
B) Substations
C) Generating Stations
D) All of the above
D
According to the Electrical Safety Handbook, which of the following equipment may create an arcing situation where there is open energized equipment?
A) Stretchers
B) Oxygen/Trauma Bags
C) Portable radios
D) All of the above
D
According to the Electrical Safety Handbook, which of the following is not one of the three parts to a typical electrical system:
A. Resistance
B. Current
C. Voltage
D. Ground
C. Voltages
According to the Electrical Safety Handbook, hich of the following is correct, a single wooden pole transmission line will range in voltage from:
A. 70000-150000
B. 69000-115000
C. 70000-115000
D. 69000-150000
B. 69000-115000
According to the Electrical Safety Handbook, an easy to remember rule for working around live high voltage transmission lines is to keep at least ___ metres (___ft.) away.
A. 6 metres, 20 ft
B. 10 meters, 33 ft
C. 100 meters, 330 ft
D. 3 meters, 10 ft
A. 6 metres, 20 ft.
According to the Electrical Safety Handbook, which of the following about fallen or low hanging wires is incorrect?
A. Stand well back, at least 5 metres (16 ft.) or more away. Look and locate all wire ends
B. Stand well back, at least 3 metres (10 ft.) or more away. Look and locate all wire ends
C. Stand well back, at least 15 metres (33 ft.) or more away. Look and locate all wire ends
D. Stand well back, at least 100 metres (330 ft.) or more away. Look and locate all wire ends
A. Stand well back, at least 5 metres (16 ft.) or more away. Look and locate all wire ends
According to the Electrical Safety Handbook, bystanders should be back at least ____ metres (____ ft.)
A. 6 metres, 20 ft
B. 10 meters, 33 ft
C. 100 meters, 330 ft
D. 3 meters, 10 ft
B. 10m 33feet
According to the Electrical Safety Handbook, a fallen wire lies on top of, or under a vehicle with one or more people inside, the driver is unable to move the vehicle or the vehicle will not move, which of the following instructions is correct?
A) Instruct the driver to “Stay in the vehicle….” Until the electrical utility personnel arrive
B) Continually monitor the safe zone, secure the area and keep people away
C) A vehicle’s tires may smoke or explode from heating up, but do not advise leaving the vehicle except in the event of fire
D) All of the Above
D
According to the Electrical Safety Handbook, victim(s) are unconscious and there are fallen wires under or on the vehicle or hanging very close to the vehicle, which of the following instructions is correct?
A) Determine and continually monitor the safe zone, secure the area and keep people away
B) Monitor closely for any change in the situation (fire starts etc.) Instruct any victim who might regain consciousness to “Stay in the vehicle…” until the power line is de-energized (made safe)
C) DO NOT take action which would endanger your own life or the lives of others
D) All of the Above
D
According to the Electrical Safety Handbook, keep bystanders and non-emergency persons at least ____ metres (_____ ft.) from a vehicle tire pyrolysis incident.
A. 6 metres, 20 ft
B. 10 meters, 33 ft
C. 100 meters, 330 ft
D. 3 meters, 10 ft
C. 100m 330feet