PACKAGE QUESTION LIST
UPT PUKP 03 - AKMI, Cirebon
Periode Paska Ulang 0412 AKMI (15 Dec 2017 - 16 Dec 2017)
ANT III -
Exam Code N-01-02 (Pasca) Level Function
1
Package Code A
Competency Use of radar and ARPA to maintain safety of navigation
Package Code N3.1.03-A
1. What does this control on the radar indicate? (see figure)
a. Tuning.
b. Anti-clutter.
c. Transmitted power monitor.
d. Performance monitor.
2. A reference for target bearings is provided by a line on the radar screen called the :
a. heading marker
b. timebase
c. centre line
d. scanner line
3. In the equation d = (t x s) r2, the quantity S is
a. The speed of the radar waves
b. The diameter of the radar screen
c. The width of the scanner
d. The range scale in use
4. Radar uses pulse transmission in order to:
a. avoid interference
b. . counteract bad weather
c. detect close range targets
d. Conserve energy
5. Radar does not transmit continuously because it would:
a. prevent detection of targets
b. reduce the life of components
c. cause interference to other vessels
d. make the equipment get very hot
6. Target detection ranges are considerably reduced due to shipboard structures like the Samson posts etc. What are such areas
known as?
a. Blind sectors
b. Shadow areas
c. Blind areas
d. Shadow sectors
7. Target ranges are obtained from:
a. the range marker
b. the heading marker
c. the bearing marker
d. the pulse repetition frequency
8. Targets echoes appear along a line called the :
a. scanner
b. timebase
c. heading marker
d. centre line
9. The unit which sends returning ragets echoes to the receiver is the:
a. scanner unit
b. transmitter unit
c. power supply unit
d. display unit
10. The function of the waueguide is to :
a. shape the beam in vertical plane
b. generate the R.F. pulses
c. conduct pulses to and from the scanner
d. block the transmitter during reception
11. The main component in the display unit is the:
a. scanner
b. cathode ray unit
c. waueguide
d. T/R cell
12. The main component of the transmitter is the:
a. antenna
b. cathode ray tube
c. agnetron
d. power supply
13. The purpose of radar is to enable:
a. The wave-lengths of radio waves to be calculated
b. The echoes of targets to be separated
c. The speed of radio waves to be measured
d. The range and bearing of objects to be obtained
14. The purpose of the transmitter unit is to :
a. conduct the radar pulses to the scanner
b. detect the returning radar pulses
c. radiate the radar pulses
d. generate the radar pulses
15. The transmitter P.R.F. is determined by the :
a. delay line
b. modulator
c. magnetron
d. trigger unit
16. The unit which radiates the radar pulse is the:
a. scanner
b. receiver
c. display
d. transmitter
17. What does the above diagram indicate? (see figure)
a. USW
b. Range discrimination.
c. Minimum range.
d. Bearing discrimination.
18. What indicates the true movement of the target being tracked?
a. Relative vector
b. True vector
c. Neither nor
d. Both and
19. What is no.12 ? (see figure)
a. Mixer
b. Trace blanking
c. Scanner
d. CRT
20. What is no.4 ? (see figure)
a. Delay line
b. Power supplies
c. Modulator
d. Magnetron
21. What is the closest point of approach of target A ?
a. Between 1 - 2 miles
b. Between 2 - 2.2 miles
c. Less than 0.9 miles
d. Between 3 - 3.9 mile
22. What is the closest point of approach of target A ?
a. Between 1 - 2 miles
b. Between 4 - 5 miles
c. Less than 0.9 mile
d. Between 3 - 3.9 miles
23. What is the closest point of approach of target A ?
a. Less than 1 mile
b. Between 1 - 2 miles
c. More than 5 miles
d. Between 4 - 5 miles
24. What is the time of closest point of approach of target A ?
a. Between 46 - 60 minutes
b. Between 21- 30 minutes
c. Now or passed
d. Between 11 - 20 minutes
25. What is this mark? (see figure)
a. Lt vessel
b. Racon
c. Ramark
d. Signal from SART
26. What is this on the PPI? (see figure)
a. Raymark
b. Clearing bearing
c. Clearing line
d. Racon
27. What type of spurious echoes are these? (see figure)
a. Multiple echoes
b. Side lobe echoes
c. Indirect echoes
d. Second trace echoes
28. When two tracked targets are very close to each other, the data of one target shifts over to the other target. What is this
called?
a. Plotting
b. Target swap
c. Target loss
d. Trial manoeuvre
29. Which target will have the closest point of approach ?
a. Target B
b. Target C
c. Target A
d. Target A
30. Who should conn the vessel at the time of a search and rescue operation?
a. Call for a pilot to do this
b. Master
c. The second in command (CH. Officer)
d. Duty officer
