ISA UTILITY SPECIALIST EXAM 2026
CHAPTERS 1–7 COMPLETE QUESTIONS
AND CORRECT ANSWERS GRADED A+
⩥ Accident Pyramid. 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. Answer: accounting methodology that records
revenues & costs when they occur
⩥ ACSR. Answer: aluminum conductor steel reinforced
⩥ Action Threshold. 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. Answer: structured face to face communication
technique that improves performance & increases understanding btwn
people
-use persons name
-paraphrase their message
,⩥ Acute Toxicity. Answer: adverse effects resulting from exposure to a
single dose or exposure to multiple doses of a substance over short time
frame
⩥ Aerial Application. Answer: VM application of herbicide using
aircraft(helicopters/fixed wing)
⩥ Aerial LIft. Answer: truck, logging skidder or vehicle mounted w
hydraulic boom supported bucket or semi-enclosed working platform
used to elevate workers
⩥ AHAS Inhibitors. 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. 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. Answer: ability of some plants including certain grasses,
to release chems that suppress other plant species growing around them
,⩥ ALS Inhibitors. Answer: chemical class of commonly used IVM
herbicides in which the mode of action inhibits a key enzyme
-acetolactate synthase
⩥ Alternating Current(AC). 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). 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). 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). Answer: American National Standard for Tree
Care Operations----Tree/Shrub/Wood Plant Maintenance
-IVM---utility ROW
⩥ ANSI Z133. Answer: ANSI Arboricultural Operations----Safety Reqs
, -safety standard of practice for tree care
⩥ Approach Distance. 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. 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. 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. 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
CHAPTERS 1–7 COMPLETE QUESTIONS
AND CORRECT ANSWERS GRADED A+
⩥ Accident Pyramid. 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. Answer: accounting methodology that records
revenues & costs when they occur
⩥ ACSR. Answer: aluminum conductor steel reinforced
⩥ Action Threshold. 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. Answer: structured face to face communication
technique that improves performance & increases understanding btwn
people
-use persons name
-paraphrase their message
,⩥ Acute Toxicity. Answer: adverse effects resulting from exposure to a
single dose or exposure to multiple doses of a substance over short time
frame
⩥ Aerial Application. Answer: VM application of herbicide using
aircraft(helicopters/fixed wing)
⩥ Aerial LIft. Answer: truck, logging skidder or vehicle mounted w
hydraulic boom supported bucket or semi-enclosed working platform
used to elevate workers
⩥ AHAS Inhibitors. 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. 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. Answer: ability of some plants including certain grasses,
to release chems that suppress other plant species growing around them
,⩥ ALS Inhibitors. Answer: chemical class of commonly used IVM
herbicides in which the mode of action inhibits a key enzyme
-acetolactate synthase
⩥ Alternating Current(AC). 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). 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). 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). Answer: American National Standard for Tree
Care Operations----Tree/Shrub/Wood Plant Maintenance
-IVM---utility ROW
⩥ ANSI Z133. Answer: ANSI Arboricultural Operations----Safety Reqs
, -safety standard of practice for tree care
⩥ Approach Distance. 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. 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. 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. 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
