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RO-MAI S9

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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 — 14_MAICN — RO-MAI S9” contains 30 questions across 1 collection.

Learning

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Exam

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Sample questions and answers

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Ce este si cum se efectueaza filtrarea uleiului din circuitul de ungere a motorului diesel?

One correct answer

  • deoarece simpla decantare nu da rezultate bune in filtrarea uleiului de alte impuritati, filtrarea prin centrifugare este cea mai folosita la bord
  • filtrarea uleiului se poate face prin doua operatii:purificare si clarificare
  • filtrarea uleiului se face prin filtre grosiere (brute), filtre fine si filtre centrifugale montate in instalatia de ungere✓ Correct answer
Care sunt conditiile impuse pentru lichidele de racire ale motoarelor cu ardere interna?

One correct answer

  • sa nu fie corozive, fata de instalatia de racire (metal, aliaje, furtunuri etc.)✓ Correct answer
  • sa aiba temperatura de fierbere cat mai scazuta, astfel incat sa se vaporizeze greu, ceea ce conduce la micsorarea pierderilor prin evaporare si la evitarea formarii dopurilor de vapori in instalatia de racire
  • sa aiba un punct de inflamabilitate cat mai scazut pentru a se evita pericolul de incendiu
Prin ce se caracterizeaza pompele cu inele de apa utilizate in instalatiile de racire ale motorului?

One correct answer

  • asigura trecerea libera a apei la golirea instalatiei
  • au o larga raspandire la motoarele diesel✓ Correct answer
  • se utilizeaza foarte rar la motoarele diesel
Care sunt conditiile indispensabile pentru exploatarea corecta a motoarelor, din punctul de vedere al racirii?

One correct answer

  • mentinerea unei turatii constante a motorului
  • mentinerea unei valori scazute a temperaturii apei de racire
  • mentinerea temperaturii organelor motorului intre limitele stabilite de proiectant✓ Correct answer
Care este cel mai folosit agent de racire pentru motoarele navale?

One correct answer

  • aerul
  • uleiul
  • apa din circuitul inchis✓ Correct answer

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