LADWP Electric Station Operator Exam 2026–2027 Edition,
Los Angeles Department of Water and Power (LADWP),
(Circuit Breakers, Disconnects, Transformers) Verified
Questions and Passed Answers
, Introduction
This document covers Electric Station Operator exam
preparation material related to circuit breakers, disconnects,
transformers, switching operations, fault management, and
electrical distribution systems. It includes verified questions
and answers on transformer theory, load management,
substation operations, safety procedures, and power system
reliability. The material also addresses outage response,
SCADA systems, regulatory compliance, grid resilience, and
modern electric station technologies. It provides
comprehensive study content aligned with Electric Station
Operator examination topics.
, Exam Questions and Answers
Small and medium sized __________ are self-cooled; that is;
cooling takes place by direct radiation from the tank to the
surrounding air. ---correct precise answer---transformers
Transformer oil in good condition must be able to withstand
_____kV applied across two flat electrodes submerged in a
, staple of the oil without arcing. ---correct precise answer---
30
__________-ratio is the number of turns of wire in the
primary winding compared to the number of turns in the
secondary winding. ---correct precise answer---Turns
An ideal __________ is one in which all the lines of force
produced by the primary winding inductively link every turn
of the secondary winding. ---correct precise answer---
transformer
A transformer whose secondary or output voltage is higher
that its input or primary voltage is called a step-________
transformer. ---correct precise answer---up
A transformer whose secondary or output voltage is lower
that its input or primary voltage is called a step-________
transformer. ---correct precise answer---down
Larger transformers are about _____% efficient. ---correct
precise answer---98
The amount of __________ delivered by the secondary winding
is less than the amount supplied to the primary winding. ---
correct precise answer---power
Los Angeles Department of Water and Power (LADWP),
(Circuit Breakers, Disconnects, Transformers) Verified
Questions and Passed Answers
, Introduction
This document covers Electric Station Operator exam
preparation material related to circuit breakers, disconnects,
transformers, switching operations, fault management, and
electrical distribution systems. It includes verified questions
and answers on transformer theory, load management,
substation operations, safety procedures, and power system
reliability. The material also addresses outage response,
SCADA systems, regulatory compliance, grid resilience, and
modern electric station technologies. It provides
comprehensive study content aligned with Electric Station
Operator examination topics.
, Exam Questions and Answers
Small and medium sized __________ are self-cooled; that is;
cooling takes place by direct radiation from the tank to the
surrounding air. ---correct precise answer---transformers
Transformer oil in good condition must be able to withstand
_____kV applied across two flat electrodes submerged in a
, staple of the oil without arcing. ---correct precise answer---
30
__________-ratio is the number of turns of wire in the
primary winding compared to the number of turns in the
secondary winding. ---correct precise answer---Turns
An ideal __________ is one in which all the lines of force
produced by the primary winding inductively link every turn
of the secondary winding. ---correct precise answer---
transformer
A transformer whose secondary or output voltage is higher
that its input or primary voltage is called a step-________
transformer. ---correct precise answer---up
A transformer whose secondary or output voltage is lower
that its input or primary voltage is called a step-________
transformer. ---correct precise answer---down
Larger transformers are about _____% efficient. ---correct
precise answer---98
The amount of __________ delivered by the secondary winding
is less than the amount supplied to the primary winding. ---
correct precise answer---power
