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02_NAVIGATIE

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About this collection

The ANR bank contains many sets with original names and codes, including navigation, safety and equipment topics. Select a module by name or use question search.

“ANR — RO-NRE — 02_NAVIGATIE” contains 15 questions across 1 collection.

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Sample questions and answers

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Freceventa purtatoare de lucru a statiilor LORAN-C este:

One correct answer

  • 1950 Khz
  • 1850 Khz
  • 1750 Khz
  • 100 Khz✓ Correct answer
Intre pozitia afisata de receptorul GPS in sistem bidimensional 2D (latitudine, longitudine) si pozitia corespunzatoare materializata pe harta de navigatie apar diferente daca:

One correct answer

  • Harta nu este actualizata la zi
  • Nu este cunoscuta exact inaltimea antenei receptorului GPS
  • Nu a fost aplicata corectia de fus orar la ora afisata de receptorul GPS
  • Harta a fost proiectata pe baza unui elipsoid de referinta diferit de cel pe baza caruia a fost proiectat sistemul GPS✓ Correct answer
Care din afirmatiile de mai jos cu privire la efectul de uscat este FALSA:

One correct answer

  • Depinde de raportul dintre distanta nava-radiofar, nava-linia coastei
  • Este minim cand directia nava-radiofar este orientata pe normala la linia coastei
  • Este maxim cand directia nava-radiofar este orientata pe normala la linia coastei✓ Correct answer
  • Depinde de unghiul format intre directia nava-radiofar si linia coastei
Precizia punctului afisat de un receptor GPS depinde de un cumul de factori. Care din afirmatiile de mai jos este FALSA:

One correct answer

  • Configuratia satelitilor radiovizibili
  • Eroarea in punctul estimat al navei✓ Correct answer
  • Numarul de sateliti radiovizibili
  • Degradarea intentionata a secventei de efemerida din structura semnalului emis de satelitii GPS
Gradul de incredere in punctul afisat de un receptor GPS este dat de dilutia orizontala in pozitie (HDOP) exprimata printr-o scara conventionala de la 1 la 10. Punctele cu grad minim de incredere corespund pentru:

One correct answer

  • HDOP<1
  • 24HDOP>5✓ Correct answer

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