LADWP Electric Station Operator Exam Study
Questions with Verified A+ Solutions
switching - Answer One of the primary tasks of the Electric Station Operator is the __________ of high
voltage circuits.
50 100 - Answer Electrical current may flow across the contacts of ____ to ____ electrical switches
before it reaches the consumer.
improper - Answer 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.
switches - Answer Electrical __________ are installed in the path from the generator to the consumer to
provide reliability, flexibility, and safeguards for the electrical power system.
emergency - Answer Operators use electrical switches to perform routine, automatic, and
____________ switching operations on the electrical system.
Routine - Answer ___________ switching is for maintenance, construction, cleaning, testing, etc.
Automatic - Answer ___________ switching operations include automatic reclosers (ARs), Voltage
Pickup Unit (VPUs), and Automatic Transfer Switching (ATSs).
Emergency - Answer ___________ switching operations include insolate trouble, restoration, 4.8kV
Ground Search, etc.
Automatic - Answer The placement of ___________ electrical switches in the power system makes it
possible to limit both the duration and the extent of power outages.
Emergency - Answer __________ switching performed by Operators in usually in response to power
outages and abnormal conditions such as overloads.
, manipulation - Answer 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.
Circuit breakers - Answer __________ 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.
Circuit breakers - Answer Transformers and voltage regulators must be energized and de-energized
using __________.
Circuit breakers - Answer __________ are designed to open, close, energize, de-energize, and interrupt
normal and abnormal values of current flow in electrical circuits
Disconnects - Answer __________ are provided as a method of visually confirming that a circuit has
been "disconnected" from specified sources of electrical energy.
Disconnects - Answer __________ are used to energize or de-energize short sections of conductor such
as leads connecting a circuit breaker to its associated disconnects.
Disconnects - Answer __________ are not designed to interrupts current flow, open or close circuits, or
energize and de-energize circuits other than short sections.
10 20 - Answer During abnormal conditions, current often exceeds the normal limitation of these
devices by as much as _____ to _____ times their normal rating.
Dielectric medium - Answer 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.
Dielectric - Answer The ability of a substance to prevent the flow of electrical current is described as its
__________ strength.
Questions with Verified A+ Solutions
switching - Answer One of the primary tasks of the Electric Station Operator is the __________ of high
voltage circuits.
50 100 - Answer Electrical current may flow across the contacts of ____ to ____ electrical switches
before it reaches the consumer.
improper - Answer 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.
switches - Answer Electrical __________ are installed in the path from the generator to the consumer to
provide reliability, flexibility, and safeguards for the electrical power system.
emergency - Answer Operators use electrical switches to perform routine, automatic, and
____________ switching operations on the electrical system.
Routine - Answer ___________ switching is for maintenance, construction, cleaning, testing, etc.
Automatic - Answer ___________ switching operations include automatic reclosers (ARs), Voltage
Pickup Unit (VPUs), and Automatic Transfer Switching (ATSs).
Emergency - Answer ___________ switching operations include insolate trouble, restoration, 4.8kV
Ground Search, etc.
Automatic - Answer The placement of ___________ electrical switches in the power system makes it
possible to limit both the duration and the extent of power outages.
Emergency - Answer __________ switching performed by Operators in usually in response to power
outages and abnormal conditions such as overloads.
, manipulation - Answer 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.
Circuit breakers - Answer __________ 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.
Circuit breakers - Answer Transformers and voltage regulators must be energized and de-energized
using __________.
Circuit breakers - Answer __________ are designed to open, close, energize, de-energize, and interrupt
normal and abnormal values of current flow in electrical circuits
Disconnects - Answer __________ are provided as a method of visually confirming that a circuit has
been "disconnected" from specified sources of electrical energy.
Disconnects - Answer __________ are used to energize or de-energize short sections of conductor such
as leads connecting a circuit breaker to its associated disconnects.
Disconnects - Answer __________ are not designed to interrupts current flow, open or close circuits, or
energize and de-energize circuits other than short sections.
10 20 - Answer During abnormal conditions, current often exceeds the normal limitation of these
devices by as much as _____ to _____ times their normal rating.
Dielectric medium - Answer 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.
Dielectric - Answer The ability of a substance to prevent the flow of electrical current is described as its
__________ strength.
