LADWP ELECTRIC STATION
OPERATOR (CIRCUIT BREAKERS,
DISCONNECTS, TRANSFORMERS)
EXAM 2026/2027 WITH 105 QUESTIONS
AND EXPERT-VERIFIED CORRECTA
ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS | LADWP EXAM
During abnormal conditions, current often exceeds the normal limitation of these
devices by as much as _____ to _____ times their normal rating. - CORRECT
ANSWER-10 20
This is the insulating mechanism that occupies the space between the open contacts
of a CB and prevents the flow of current through the device while the contacts are
in the open position. - CORRECT ANSWER-Dielectric medium
The ability of a substance to prevent the flow of electrical current is described as
its __________ strength. - CORRECT ANSWER-Dielectric
, __________ of electricity have no dielectric strength, as they allow current to flow
in a circuit. - CORRECT ANSWER-Conductors
__________, which has a relatively high dielectric strength, is used as the
dielectric medium in many low voltage applications where current values are also
low. A common example is the light switch found in homes, etc. - CORRECT
ANSWER-Air
Some of the materials used in __________that have sufficient dielectric strength of
for interrupting power system current values are: Insulating oils, pressurized inert
gasses, Sulfur Hexafluoride gas, and Vacuum chambers. - CORRECT ANSWER-
Circuit Breakers
___________ and moisture in particular are two elements that can destroy the
interrupting capabilities of a chosen dielectric medium. - CORRECT ANSWER-
Dirt
Severe contamination of a dielectric medium can cause CBs to __________ by
allowing an arc to be sustained between the open contacts or the contacts and the
grounded tank(s) or housing of the CB. - CORRECT ANSWER-explode
__________ are usually made of insulating porcelain. - CORRECT ANSWER-
Bushings
Portions of the mechanical linkages connected to movable contacts must be
constructed of __________ materials to prevent the electrical components of the
contacts and conductors from energizing the components of the CB such as the
tank, controls, etc. - CORRECT ANSWER-Nonconductive
OPERATOR (CIRCUIT BREAKERS,
DISCONNECTS, TRANSFORMERS)
EXAM 2026/2027 WITH 105 QUESTIONS
AND EXPERT-VERIFIED CORRECTA
ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS | LADWP EXAM
During abnormal conditions, current often exceeds the normal limitation of these
devices by as much as _____ to _____ times their normal rating. - CORRECT
ANSWER-10 20
This is the insulating mechanism that occupies the space between the open contacts
of a CB and prevents the flow of current through the device while the contacts are
in the open position. - CORRECT ANSWER-Dielectric medium
The ability of a substance to prevent the flow of electrical current is described as
its __________ strength. - CORRECT ANSWER-Dielectric
, __________ of electricity have no dielectric strength, as they allow current to flow
in a circuit. - CORRECT ANSWER-Conductors
__________, which has a relatively high dielectric strength, is used as the
dielectric medium in many low voltage applications where current values are also
low. A common example is the light switch found in homes, etc. - CORRECT
ANSWER-Air
Some of the materials used in __________that have sufficient dielectric strength of
for interrupting power system current values are: Insulating oils, pressurized inert
gasses, Sulfur Hexafluoride gas, and Vacuum chambers. - CORRECT ANSWER-
Circuit Breakers
___________ and moisture in particular are two elements that can destroy the
interrupting capabilities of a chosen dielectric medium. - CORRECT ANSWER-
Dirt
Severe contamination of a dielectric medium can cause CBs to __________ by
allowing an arc to be sustained between the open contacts or the contacts and the
grounded tank(s) or housing of the CB. - CORRECT ANSWER-explode
__________ are usually made of insulating porcelain. - CORRECT ANSWER-
Bushings
Portions of the mechanical linkages connected to movable contacts must be
constructed of __________ materials to prevent the electrical components of the
contacts and conductors from energizing the components of the CB such as the
tank, controls, etc. - CORRECT ANSWER-Nonconductive
