LADWP Electric Station Operator
(Circuit Breakers, Disconnects, Transformers)
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. One of the primary tasks of the Electric Station Operator is the __________
of high voltage circuits. - Correct Answer: switching
2. Electrical current may flow across the contacts of ____ to ____ electrical
switches before it reaches the consumer. - Correct Answer: 50 100
3. The __________ operation of these electrical switches can pose a serious
hazard to personnel, can cause destruction of expensive power system
equipment, and can cause unnecessary interruption of electrical service to
consumers. - Correct Answer: improper
4. Electrical __________ are installed in the path from the generator to the
consumer to provide reliability, flexibility, and safeguards for the electrical
power system. - Correct Answer: switches
,5. Operators use electrical switches to perform routine, automatic, and
____________ switching operations on the electrical system. - Correct
Answer: emergency
6. ___________ switching is for maintenance, construction, cleaning, testing,
etc. - Correct Answer: Routine
7. ___________ switching operations include automatic reclosers (ARs),
Voltage Pickup Unit (VPUs), and Automatic Transfer Switching (ATSs). -
Correct Answer: Automatic
8. ___________ switching operations include insolate trouble, restoration,
4.8kV Ground Search, etc. - Correct Answer: Emergency
9. The placement of ___________ electrical switches in the power system
makes it possible to limit both the duration and the extent of power
outages. - Correct Answer: Automatic
10.__________ switching performed by Operators in usually in response to
power outages and abnormal conditions such as overloads. - Correct
Answer: Emergency
11.The electrical function of switches falls into two categories; ___________ of
relatively high values of current and voltage under load AND the switching
of circuits to provide a visual confirmation of de-energization. - Correct
Answer: manipulation
,12.__________ are electrical switches that are used to manipulate high values
of current and voltage in circuits that are carrying current or will be carrying
current following the operation. - Correct Answer: Circuit breakers
13.Transformers and voltage regulators must be energized and de-energized
using __________. - Correct Answer: Circuit breakers
14.__________ are designed to open, close, energize, de-energize, and
interrupt normal and abnormal values of current flow in electrical circuits -
Correct Answer: Circuit breakers
15.__________ are provided as a method of visually confirming that a circuit
has been "disconnected" from specified sources of electrical energy. -
Correct Answer: Disconnects
16.__________ are used to energize or de-energize short sections of conductor
such as leads connecting a circuit breaker to its associated disconnects. -
Correct Answer: Disconnects
17.__________ are not designed to interrupts current flow, open or close
circuits, or energize and de-energize circuits other than short sections. -
Correct Answer: Disconnects
, 18.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
19.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
20.The ability of a substance to prevent the flow of electrical current is
described as its __________ strength. - Correct Answer: Dielectric
21.__________ of electricity have no dielectric strength, as they allow current
to flow in a circuit. - Correct Answer: Conductors
22.__________, 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
23.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
(Circuit Breakers, Disconnects, Transformers)
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. One of the primary tasks of the Electric Station Operator is the __________
of high voltage circuits. - Correct Answer: switching
2. Electrical current may flow across the contacts of ____ to ____ electrical
switches before it reaches the consumer. - Correct Answer: 50 100
3. The __________ operation of these electrical switches can pose a serious
hazard to personnel, can cause destruction of expensive power system
equipment, and can cause unnecessary interruption of electrical service to
consumers. - Correct Answer: improper
4. Electrical __________ are installed in the path from the generator to the
consumer to provide reliability, flexibility, and safeguards for the electrical
power system. - Correct Answer: switches
,5. Operators use electrical switches to perform routine, automatic, and
____________ switching operations on the electrical system. - Correct
Answer: emergency
6. ___________ switching is for maintenance, construction, cleaning, testing,
etc. - Correct Answer: Routine
7. ___________ switching operations include automatic reclosers (ARs),
Voltage Pickup Unit (VPUs), and Automatic Transfer Switching (ATSs). -
Correct Answer: Automatic
8. ___________ switching operations include insolate trouble, restoration,
4.8kV Ground Search, etc. - Correct Answer: Emergency
9. The placement of ___________ electrical switches in the power system
makes it possible to limit both the duration and the extent of power
outages. - Correct Answer: Automatic
10.__________ switching performed by Operators in usually in response to
power outages and abnormal conditions such as overloads. - Correct
Answer: Emergency
11.The electrical function of switches falls into two categories; ___________ of
relatively high values of current and voltage under load AND the switching
of circuits to provide a visual confirmation of de-energization. - Correct
Answer: manipulation
,12.__________ are electrical switches that are used to manipulate high values
of current and voltage in circuits that are carrying current or will be carrying
current following the operation. - Correct Answer: Circuit breakers
13.Transformers and voltage regulators must be energized and de-energized
using __________. - Correct Answer: Circuit breakers
14.__________ are designed to open, close, energize, de-energize, and
interrupt normal and abnormal values of current flow in electrical circuits -
Correct Answer: Circuit breakers
15.__________ are provided as a method of visually confirming that a circuit
has been "disconnected" from specified sources of electrical energy. -
Correct Answer: Disconnects
16.__________ are used to energize or de-energize short sections of conductor
such as leads connecting a circuit breaker to its associated disconnects. -
Correct Answer: Disconnects
17.__________ are not designed to interrupts current flow, open or close
circuits, or energize and de-energize circuits other than short sections. -
Correct Answer: Disconnects
, 18.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
19.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
20.The ability of a substance to prevent the flow of electrical current is
described as its __________ strength. - Correct Answer: Dielectric
21.__________ of electricity have no dielectric strength, as they allow current
to flow in a circuit. - Correct Answer: Conductors
22.__________, 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
23.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
