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ELECTRONICS TECHNICIAN E-5
ADVANCEMENT ACTUAL EXAM 2026
300 QESTIONS AND VERIFIED
ANSWERS | RATED A +
What are used for taking depth soundings? - answer- fathometers
Which geometric system is used to locate points on a plane? - answer-
polar-coordinate
Which polar coordinate type radio air-navigation system provides an
aircrew with distance information, from distance measuring equipment
(dme), and bearing (azimuth) information? - answer- tactical air
navigation (tacan)
What are errors arising from imperfections in the phase measuring
circuits and radio propagation effects known as? - answer- site error
Which tactical air navigation signals have top priority? - answer-
reference bursts
How many types of antennas are used with the an/urn-25? - answer- 2
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Which antenna group is a solid-state, high-performance, electrically-
scanned, all-band tacan antenna system, complete with intergral
monitoring system and built-in fault isolation capability? - answer- oe-
273/urn
How many interrogating aircraft can the tactical air navigation an/urn-20
set simultaneously provide individual distnace measuring service for? -
answer- 100
Which cooling method is limited in its cooling effect because it relies
upon the natural airflow and requires that the equipment enclosure be of
open construction without air falters? - answer- convection
Which type of cooling system is normally found on large equipment
installations where a huge amount of heat is developed? - answer- air-to-
liquid
How many basuc coolant systems is a typical liquid cooling system
composed of? - answer- 2
How many basic liquid cooling system configurations are there in the us
navy as of the time of this publican? - answer- 3
Type i (sw/dw) systems are used for electronic system installations that
can be operated satisfactorily with seawater temperature as high as how
many degrees? - answer- 95*f
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Type ii (sw/dw, cw/dw) systems are used in installations that cannot
accept distilled water temperature higher than how many degrees? -
answer- 90*f
Which basic liquid cooling systems are used in installations where the
temperature range is critical? - answer- type iii (cw/dw)
The cooling water for the primary cooling system is either seawater or
which type of water? - answer- chilled
What are seawater systems referred to as besides one-pass? - answer-
open-looped
Which cooling system is designed to transfer heat from the electronic
equipment being cooled to the primary cooling system? - answer-
secondary
What will slowly dissolve the insides of various components in the
primary seawater cooling system because of dissimiliar metals in the
cooling system? - answer- electrolysis
Which type of basket strainer consists of a y-pattern body housing a wire
mesh basket? - answer- simplex
Which type of temperature regulating valve is used where seawateris the
primary cooling medium in the heat exchanger? - answer- three-way
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Which type of temperature regulating valve is used where chilled water
is the primary cooling medium in the heat exchanger? - answer- two-
way
Where is the constant flow regulator installed in relation to the heat
exchanger when used with the chilled-water system? - answer-
downstream
How many types of system flowmeters are installed aboard ships? -
answer- 3
Which type of flowmeter uses a flat plate with a hole in it which causes
a considerable loss of pressure downstream? - answer- orifice
The efficiency of the orifice flowmeter can be as low as what percent? -
answer- 65%
How many secondary distilled water circulating pumps does each
cooling system have? - answer- 2
How many major elements does the centrifugal pump have? - answer- 2
What is used to maintain secondary cooling system water in an ultrapure
state? - answer- demineralizer
ELECTRONICS TECHNICIAN E-5
ADVANCEMENT ACTUAL EXAM 2026
300 QESTIONS AND VERIFIED
ANSWERS | RATED A +
What are used for taking depth soundings? - answer- fathometers
Which geometric system is used to locate points on a plane? - answer-
polar-coordinate
Which polar coordinate type radio air-navigation system provides an
aircrew with distance information, from distance measuring equipment
(dme), and bearing (azimuth) information? - answer- tactical air
navigation (tacan)
What are errors arising from imperfections in the phase measuring
circuits and radio propagation effects known as? - answer- site error
Which tactical air navigation signals have top priority? - answer-
reference bursts
How many types of antennas are used with the an/urn-25? - answer- 2
,2|Page
Which antenna group is a solid-state, high-performance, electrically-
scanned, all-band tacan antenna system, complete with intergral
monitoring system and built-in fault isolation capability? - answer- oe-
273/urn
How many interrogating aircraft can the tactical air navigation an/urn-20
set simultaneously provide individual distnace measuring service for? -
answer- 100
Which cooling method is limited in its cooling effect because it relies
upon the natural airflow and requires that the equipment enclosure be of
open construction without air falters? - answer- convection
Which type of cooling system is normally found on large equipment
installations where a huge amount of heat is developed? - answer- air-to-
liquid
How many basuc coolant systems is a typical liquid cooling system
composed of? - answer- 2
How many basic liquid cooling system configurations are there in the us
navy as of the time of this publican? - answer- 3
Type i (sw/dw) systems are used for electronic system installations that
can be operated satisfactorily with seawater temperature as high as how
many degrees? - answer- 95*f
,3|Page
Type ii (sw/dw, cw/dw) systems are used in installations that cannot
accept distilled water temperature higher than how many degrees? -
answer- 90*f
Which basic liquid cooling systems are used in installations where the
temperature range is critical? - answer- type iii (cw/dw)
The cooling water for the primary cooling system is either seawater or
which type of water? - answer- chilled
What are seawater systems referred to as besides one-pass? - answer-
open-looped
Which cooling system is designed to transfer heat from the electronic
equipment being cooled to the primary cooling system? - answer-
secondary
What will slowly dissolve the insides of various components in the
primary seawater cooling system because of dissimiliar metals in the
cooling system? - answer- electrolysis
Which type of basket strainer consists of a y-pattern body housing a wire
mesh basket? - answer- simplex
Which type of temperature regulating valve is used where seawateris the
primary cooling medium in the heat exchanger? - answer- three-way
, 4|Page
Which type of temperature regulating valve is used where chilled water
is the primary cooling medium in the heat exchanger? - answer- two-
way
Where is the constant flow regulator installed in relation to the heat
exchanger when used with the chilled-water system? - answer-
downstream
How many types of system flowmeters are installed aboard ships? -
answer- 3
Which type of flowmeter uses a flat plate with a hole in it which causes
a considerable loss of pressure downstream? - answer- orifice
The efficiency of the orifice flowmeter can be as low as what percent? -
answer- 65%
How many secondary distilled water circulating pumps does each
cooling system have? - answer- 2
How many major elements does the centrifugal pump have? - answer- 2
What is used to maintain secondary cooling system water in an ultrapure
state? - answer- demineralizer
