NAEST REV 1B - EM WAVES,
RADAR & ARPA VER2 (CLEAN)
EXAM WITH CORRECT ANSWERS
2025
With more range and bearing information available, ARPA tracking
window gets progressively
Select one:
a. Smaller
b. Bigger
c. Stays the same in size
d. circular - correct answers - a
Radar horizon is larger than
TH Select one:
e. 25%
f. 20%
g. 15%
h. 10% - correct answers
- c
ARPA Operators are advised to allow approximately one minute of steady
tracking before using the track data (course, speed, CPA, TCPA). -
correct answers - false
The position of the target in the echo shape is along the centreline of the
echo at the leading edge. - correct answers - true
Target swap of ARPA acquired targets can occur even when targets pass far
away from each other. - correct answers - false
Own course and speed input error will affect the accuracy of the true
vector. -
correct answers - true
In accordance with Performance Standards adopted in December 2004 an
ARPA must have how many alarm signals?
Select one:
i. One
j. Three
k. Five
l. Seven - correct answers - b
Radar pulse amplitude causes error in range and bearing of targets. -
correct answers
- true
, RM
display
Select
one:
a. Shows
tgts
moving
along a
relative
LOA
b. Co &
Spd of
any tgt
obtaine
d by
plotting
c. Is Used
for Coll
Avoidan
ce
d. All
options
apply
-
correct
answer
s- d
After offset
Target swapand mayset of radar
happen picture,
when trails target
a tracked shouldenters
be a -
available
clutter in Select
area. one:
answers - true correct
e. 2 sweeps
f.
EM5 field
sweeps
moves between WG
g. 10 sweeps
covers by Select one:
h.
a. 15 sweeps - correct answers - a
Reflection
b. Refraction
c. Diffraction
ARPA operator alarms and alerts must
d. SuperSelect
Include refraction
one: - correct
i. collision
answers - a threat
j. lost target
k. zone
Rain or minimum range
clutter
l. all of Select
control above - correct answers - d
one:
e. Narrows the
Noise
HBW & VBW
Select
f. Reduces echo
one:
m.is
size on entire
caused
screen
by of above
g. Both
electro
h. None of above
ns -in a
correct
circuit
answers - b
n. shows
up on
screen
like
RADAR & ARPA VER2 (CLEAN)
EXAM WITH CORRECT ANSWERS
2025
With more range and bearing information available, ARPA tracking
window gets progressively
Select one:
a. Smaller
b. Bigger
c. Stays the same in size
d. circular - correct answers - a
Radar horizon is larger than
TH Select one:
e. 25%
f. 20%
g. 15%
h. 10% - correct answers
- c
ARPA Operators are advised to allow approximately one minute of steady
tracking before using the track data (course, speed, CPA, TCPA). -
correct answers - false
The position of the target in the echo shape is along the centreline of the
echo at the leading edge. - correct answers - true
Target swap of ARPA acquired targets can occur even when targets pass far
away from each other. - correct answers - false
Own course and speed input error will affect the accuracy of the true
vector. -
correct answers - true
In accordance with Performance Standards adopted in December 2004 an
ARPA must have how many alarm signals?
Select one:
i. One
j. Three
k. Five
l. Seven - correct answers - b
Radar pulse amplitude causes error in range and bearing of targets. -
correct answers
- true
, RM
display
Select
one:
a. Shows
tgts
moving
along a
relative
LOA
b. Co &
Spd of
any tgt
obtaine
d by
plotting
c. Is Used
for Coll
Avoidan
ce
d. All
options
apply
-
correct
answer
s- d
After offset
Target swapand mayset of radar
happen picture,
when trails target
a tracked shouldenters
be a -
available
clutter in Select
area. one:
answers - true correct
e. 2 sweeps
f.
EM5 field
sweeps
moves between WG
g. 10 sweeps
covers by Select one:
h.
a. 15 sweeps - correct answers - a
Reflection
b. Refraction
c. Diffraction
ARPA operator alarms and alerts must
d. SuperSelect
Include refraction
one: - correct
i. collision
answers - a threat
j. lost target
k. zone
Rain or minimum range
clutter
l. all of Select
control above - correct answers - d
one:
e. Narrows the
Noise
HBW & VBW
Select
f. Reduces echo
one:
m.is
size on entire
caused
screen
by of above
g. Both
electro
h. None of above
ns -in a
correct
circuit
answers - b
n. shows
up on
screen
like
