ISA Utility Specialist EXAM QUESTIONS WITH CORRECT AND VERIFIED ANSWERS|LATEST
2025
Accident -CORRECT ANSWER-discredited term for unplanned, undesirable event that could
result in unintentional injury/property damage attributed to fate/bad luck
Accident Pyramid -CORRECT ANSWER-illustration of Herbert Heinrich principles of accident
prevention-----bottom has thousands of unsafe acts/conditions, led to 300 close calls, 29
minor injuries & ultimately one major fatality/injury at top
Accrual Accounting -CORRECT ANSWER-accounting methodology that records revenues &
costs when they occur
ACSR -CORRECT ANSWER-aluminum conductor steel reinforced
Action Threshold -CORRECT ANSWER-point at which the level of incompatible plant species,
density, height, location, condition threatens the stated management objectives & requires
implementation of control method
Active Listening -CORRECT ANSWER-structured face to face communication technique that
improves performance & increases understanding btwn people
-use persons name
-paraphrase their message
Acute Toxicity -CORRECT ANSWER-adverse effects resulting from exposure to a single dose
or exposure to multiple doses of a substance over short time frame
,Aerial Application -CORRECT ANSWER-VM application of herbicide using
aircraft(helicopters/fixed wing)
Aerial LIft -CORRECT ANSWER-truck, logging skidder or vehicle mounted w hydraulic boom
supported bucket or semi-enclosed working platform used to elevate workers
AHAS Inhibitors -CORRECT ANSWER-chemical class of commonly IVM herbicides in which the
mode of action inhibits key botanical enzyme
-acetohdroxycacid synthase(AHAS)----biosynthesis of critical amino acids
Airbrake Switch -CORRECT ANSWER-manually operated switch----deployed where two
circuits meet or circuit portion from an energized feeder
-not designed to auto interrupt electrical load or be used as line protection from overload,
short circuit or fault
Allelopathy -CORRECT ANSWER-ability of some plants including certain grasses, to release
chems that suppress other plant species growing around them
ALS Inhibitors -CORRECT ANSWER-chemical class of commonly used IVM herbicides in which
the mode of action inhibits a key enzyme
-acetolactate synthase
Alternating Current(AC) -CORRECT ANSWER-electric current that reverses its direction many
times per second at regular intervals typically used in power supplies
Aluminum Conductor Steel-Reinforced Cable(ACSR) -CORRECT ANSWER-energize cable
constructed from aluminum wire stranded around a steel core
-lightweight, low cost
-tendency to stretch when heated----high electrical load or high temp
-to minimize stretch/add strength----steel core is added
,Ampere(amp, A) -CORRECT ANSWER-measure of current
- 1 A = charge carried by 6.25 x 10^18 electrons moving past a given point in one second
-ANSI A300(Part 7) -CORRECT ANSWER-American National Standard for Tree Care
Operations----Tree/Shrub/Wood Plant Maintenance
-IVM---utility ROW
ANSI Z133 -CORRECT ANSWER-ANSI Arboricultural Operations----Safety Reqs
-safety standard of practice for tree care
Approach Distance -CORRECT ANSWER-minimum distance that must be kept btwn
conductors/energized equipment & qualified line clearance personnel & non-qualified &
bodies/tools
-approach distance vary w qualifications of personnel & voltages
Automatic Line Recloser -CORRECT ANSWER-circuit breaker equipped w mechanism that
auto close the breaker after it has been opened due to a. fault
-designed to reset quickly to give the cause of a fault opp to clear
-may immediately recharge the circuit several times at adjustable time delay----2/3
operations within seconds before they open permanently
Auxin -CORRECT ANSWER-plant growth regulator or substance that promotes/influences the
growth & development of plants
-produced at sites where cells are dividing primarily in the shoot tips
-auxin like compounds may be produced synthetically
Auxin Transport Inhibitors -CORRECT ANSWER-class of selective herbicides that disrupt auxin
transport
-auxin transport obstruction causes unnatural concentration of auxin in meristematic shoots
& roots, disturbing the auxin tolerances req for normal plant growth
, Back Feed -CORRECT ANSWER-electric flow in an unintended direction thru a process
whereby de-energized lines become energized from an external source----home generator
Bargaining Unit -CORRECT ANSWER-group of workers rep by a union local
Basal Application -CORRECT ANSWER-herbicide application made at the bottom 12 in of
stem & root collar with an herbicide in an oil carrier
Behavior-Based -CORRECT ANSWER-theory of industrial accident prevention pioneered by
Herbert Heinrich that considers the overwhelming majority of incidents to be caused by
unsafe acts
Biological Methods -CORRECT ANSWER-management of vegetation by establishment &
control of compatible stable plant communities using plant competition, allelopathy,
animals, insects, pathogens
-cover-type conversion is a type of biological control
Border Zone -CORRECT ANSWER-section of a transmission/pipeline ROW that extends from
wire/pipe zone to the ROW edge
-managed to promote a low growing plant community of forms, tall shrubs & low growing
trees below a specified height(25 ft)
Branch Bark Ridge -CORRECT ANSWER-raised strip of bark at the top of a branch union
where the growth & expansion of trunk + parent stem & adjoining branch push the bark into
the ridge
Branch Collar -CORRECT ANSWER-area where a subdominant branch joins another branch or
trunk that is created by overlapping vascular tissue from both the branch & trunk
-typically enlarged at the base of the branch
2025
Accident -CORRECT ANSWER-discredited term for unplanned, undesirable event that could
result in unintentional injury/property damage attributed to fate/bad luck
Accident Pyramid -CORRECT ANSWER-illustration of Herbert Heinrich principles of accident
prevention-----bottom has thousands of unsafe acts/conditions, led to 300 close calls, 29
minor injuries & ultimately one major fatality/injury at top
Accrual Accounting -CORRECT ANSWER-accounting methodology that records revenues &
costs when they occur
ACSR -CORRECT ANSWER-aluminum conductor steel reinforced
Action Threshold -CORRECT ANSWER-point at which the level of incompatible plant species,
density, height, location, condition threatens the stated management objectives & requires
implementation of control method
Active Listening -CORRECT ANSWER-structured face to face communication technique that
improves performance & increases understanding btwn people
-use persons name
-paraphrase their message
Acute Toxicity -CORRECT ANSWER-adverse effects resulting from exposure to a single dose
or exposure to multiple doses of a substance over short time frame
,Aerial Application -CORRECT ANSWER-VM application of herbicide using
aircraft(helicopters/fixed wing)
Aerial LIft -CORRECT ANSWER-truck, logging skidder or vehicle mounted w hydraulic boom
supported bucket or semi-enclosed working platform used to elevate workers
AHAS Inhibitors -CORRECT ANSWER-chemical class of commonly IVM herbicides in which the
mode of action inhibits key botanical enzyme
-acetohdroxycacid synthase(AHAS)----biosynthesis of critical amino acids
Airbrake Switch -CORRECT ANSWER-manually operated switch----deployed where two
circuits meet or circuit portion from an energized feeder
-not designed to auto interrupt electrical load or be used as line protection from overload,
short circuit or fault
Allelopathy -CORRECT ANSWER-ability of some plants including certain grasses, to release
chems that suppress other plant species growing around them
ALS Inhibitors -CORRECT ANSWER-chemical class of commonly used IVM herbicides in which
the mode of action inhibits a key enzyme
-acetolactate synthase
Alternating Current(AC) -CORRECT ANSWER-electric current that reverses its direction many
times per second at regular intervals typically used in power supplies
Aluminum Conductor Steel-Reinforced Cable(ACSR) -CORRECT ANSWER-energize cable
constructed from aluminum wire stranded around a steel core
-lightweight, low cost
-tendency to stretch when heated----high electrical load or high temp
-to minimize stretch/add strength----steel core is added
,Ampere(amp, A) -CORRECT ANSWER-measure of current
- 1 A = charge carried by 6.25 x 10^18 electrons moving past a given point in one second
-ANSI A300(Part 7) -CORRECT ANSWER-American National Standard for Tree Care
Operations----Tree/Shrub/Wood Plant Maintenance
-IVM---utility ROW
ANSI Z133 -CORRECT ANSWER-ANSI Arboricultural Operations----Safety Reqs
-safety standard of practice for tree care
Approach Distance -CORRECT ANSWER-minimum distance that must be kept btwn
conductors/energized equipment & qualified line clearance personnel & non-qualified &
bodies/tools
-approach distance vary w qualifications of personnel & voltages
Automatic Line Recloser -CORRECT ANSWER-circuit breaker equipped w mechanism that
auto close the breaker after it has been opened due to a. fault
-designed to reset quickly to give the cause of a fault opp to clear
-may immediately recharge the circuit several times at adjustable time delay----2/3
operations within seconds before they open permanently
Auxin -CORRECT ANSWER-plant growth regulator or substance that promotes/influences the
growth & development of plants
-produced at sites where cells are dividing primarily in the shoot tips
-auxin like compounds may be produced synthetically
Auxin Transport Inhibitors -CORRECT ANSWER-class of selective herbicides that disrupt auxin
transport
-auxin transport obstruction causes unnatural concentration of auxin in meristematic shoots
& roots, disturbing the auxin tolerances req for normal plant growth
, Back Feed -CORRECT ANSWER-electric flow in an unintended direction thru a process
whereby de-energized lines become energized from an external source----home generator
Bargaining Unit -CORRECT ANSWER-group of workers rep by a union local
Basal Application -CORRECT ANSWER-herbicide application made at the bottom 12 in of
stem & root collar with an herbicide in an oil carrier
Behavior-Based -CORRECT ANSWER-theory of industrial accident prevention pioneered by
Herbert Heinrich that considers the overwhelming majority of incidents to be caused by
unsafe acts
Biological Methods -CORRECT ANSWER-management of vegetation by establishment &
control of compatible stable plant communities using plant competition, allelopathy,
animals, insects, pathogens
-cover-type conversion is a type of biological control
Border Zone -CORRECT ANSWER-section of a transmission/pipeline ROW that extends from
wire/pipe zone to the ROW edge
-managed to promote a low growing plant community of forms, tall shrubs & low growing
trees below a specified height(25 ft)
Branch Bark Ridge -CORRECT ANSWER-raised strip of bark at the top of a branch union
where the growth & expansion of trunk + parent stem & adjoining branch push the bark into
the ridge
Branch Collar -CORRECT ANSWER-area where a subdominant branch joins another branch or
trunk that is created by overlapping vascular tissue from both the branch & trunk
-typically enlarged at the base of the branch
