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14_MAICN

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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-MAI S1 — 14_MAICN” contains 28 questions across 1 collection.

Learning

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Sample questions and answers

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Ce sunt caldarile ignitubulare?

One correct answer

  • sunt generatoare de abur de tipul cu flacara directa, cu flacara intoarsa si tip locomotiva✓ Correct answer
  • sunt generatoare de gaze fierbinti, folosite la actionarea turbinelor de gaze
  • sunt agregate termice in care se obtine abur, folosind gazele de evacuare de la motorul principal
Cum se realizeaza marirea tirajului natural la o caldare navala?

One correct answer

  • prin suprainaltarea cosului navei✓ Correct answer
  • cu ajutorul unor dispozitive speciale care permit cresterea vitezei gazelor care parasesc focarul pana la 30m/s
  • cu ajutorul unor ventilatoare care introduc direct aerul in focar cu presiuni de 2-2,5 daN/cm²
Ce sunt caldarile ignitubulare?

One correct answer

  • sunt generatoare de abur la care apa circula prin interiorul tuburilor, iar gazele prin exteriorul lor
  • sunt generatoare de abur de tipul cu flacara directa, cu flacara intoarsa si tip locomotiva✓ Correct answer
  • sunt agregate termice in care se obtine abur, folosind gazele de evacuare de la motorul principal
Care este rolul preincalzitorului de aer?

One correct answer

  • asigura o ardere perfecta a combustibilului, prin ridicarea temperaturii si marirea cantitatii de aer introduse in focarul caldarii
  • contribuie la cresterea calitatii aburului
  • preincalzeste aerul introdus in focar folosind o parte din caldura gazelor de ardere✓ Correct answer
Care este locul de amplasare a economizorului la o caldare?

One correct answer

  • imediat dupa supraincalzitor, in calea gazelor✓ Correct answer
  • este ultima suprafata auxiliara a caldarii, fiind plasat la baza cosului navei
  • in interiorul focarului caldarii

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