ATO2 Navy Advancement Exam Questions
And Answers |Latest 2025 | Guaranteed Pass.
What are the two main factors that affect the velocity of sound in seawater? - Answer✔The
temperature and salinity of the water.
A sound wave traveling from an area of warm water into an area of cold water will be affected
in what way? - Answer✔It will bend toward the area of cold water.
Sonobuoys that transmit an acoustic pulse and detect a resulting echo are classified as what
type of sonobuoy? - Answer✔Active sonobuoys
Sonobuoys equipped with an EFS system have what capability? - Answer✔The capability of
selecting channel, life and depth settings
What information can a DIFAR sonobuoy provide that a LOFAR sonobuoy cannot? -
Answer✔Submarine bearing.
Which of the following sonobuoys provides water temperature data? - Answer✔BT sonobuoys
The OTPI system provides what information to the USW pilot? - Answer✔Sonobuoy bearing
information with respect to aircraft heading.
What type of naval aircraft employs the AN/ASQ-13F dipping sonar system? - Answer✔SH60-F
On a dipping sonar system, what component generates and transmits sound energy into the
water? - Answer✔The transducer.
What does the acronym IFF stands for? - Answer✔Identification Friend or Foe
What are the three basic steps in the identification process of a typical IFF system? -
Answer✔Challenge, decode, and reply
True or False. All naval aircraft contain an interrogator system. - Answer✔False
What is the pulse spacing of Mode 1? - Answer✔2.9 to 3.1 microseconds
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Of the six modes of IFF operation, which one is used by military and civilian aircraft control
stations? - Answer✔Mode 3/A
What mode IFF is the military encrypted mode? - Answer✔Mode 4
What is the transmission frequency of the interrogator? - Answer✔1030MHz
In a typical IFF/SIF system, what total number of codes can be selected in Mode 2? -
Answer✔4096
The Identification of Position (I/P) pulse is used for what purpose? - Answer✔It is used to
identify a specific friendly aircraft among other friendly aircraft that reply with the same code.
What mode of IFF is set prior to takeoff by maintenance personnel? - Answer✔Mode 2
Where are Modes 1 and 3/A selected on the AN/APX-72 transponder set? - Answer✔By
thumbwheel switches on the front of the control box.
What part of the APX-72 system provides for ground or in-flight transponder testing capability?
- Answer✔The Transponder Test Set TS-1843/APX
The AN/APX-72 generates a signal of what frequency when interrogated? - Answer✔1090 MHz
The interrogator works in conjunction with what other aircraft system? - Answer✔The radar.
What component of the interrogator set is used to select SIF reply codes for Modes 1, 2, and
3/A? - Answer✔C-7383/APX-76(V) control box
What component monitors the timing triggers, pre-triggers, gates, and test video and causes
the fault indicator lamp on the interrogator control to illuminate when a fault has been
detected within the system? - Answer✔Electronic Synchronizer SN-416/APX-76(V)
The APX-100 transponder set is available in what number of configurations? - Answer✔The
system comes in two configurations.
To respond to Mode 4 interrogations, the IFF transponder set system requires what additional
components? - Answer✔Transponder Computer KIT-1/TSEC
What APX-100 system is referred to as the rack-mounted configuration? -
Answer✔Receiver/Transmitter RT-1157/APX-100
Who is responsible for safety? - Answer✔All hands.
What precaution should you take before removing a fuse? - Answer✔De-energize the circuit
What is required for an individual to perform CPR? - Answer✔Certified CPR training
Where can you find danger areas for a particular aircraft? - Answer✔MIM
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