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RO-MRF

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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-MRF” contains 230 questions across 1 collection.

Learning

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Sample questions and answers

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Filetele, functie de forma geometrica a profilului, se clasifica in:

One correct answer

  • filet exterior;
  • filet in toli;
  • filet stanga;
  • filet ferastrau.✓ Correct answer
Operatia de fasonare a tablelor poate fi executata si la cald. Se recomanda ca in procesul de deformare a tablelor sa se efectueze:

One correct answer

  • o singura incalzire si se si interzice continuarea operatiei de deformare daca temperatura semifabricatelor a scazut sub limita inferioara de incalzire (250-400) grade Celsius in functie de compozitia chimica a materialelor;✓ Correct answer
  • doua incalziri si se interzice continuarea operatiei de deformare daca temperatura semifabricatelor a scazut sub limita inferioara de incalzire (250-400) grade Celsius in functie de compozitia chimica a materialelor;
  • o singura incalzire si se interzice continuarea operatiei de deformare daca temperatura semifabricatelor a crescut peste limita inferioara de incalzire (250-400) grade Celsius in functie de compozitia chimica a materialelor;
  • o singura decalire a materialului pentru a scade duritatea suprafetelor de indoit;
Asamblarile fixe cu inele conice sau cu pene inelare ca in fig.TRF 099 pot transmite eforturi prin frecarea dintre suprafetele de strangere datorita:Question illustration

One correct answer

  • fortele elastice;✓ Correct answer
  • fortele axiale;
  • fortele centrifugale;
  • fortele tangentiale.
In fig. TRF 160 avem o imbinare prin strangere de tipul:Question illustration

One correct answer

  • cu organe de strangere auxiliare;✓ Correct answer
  • fara organe de strangere auxiliare;
  • conice;
  • fretate.
La sudarea oxiacetilenica unghiurile de inclinare ale becului:

One correct answer

  • scad o data cu grosimea tablelor;
  • cresc o data cu grosimea tablelor;✓ Correct answer
  • scad catre finalul realizarii cusaturii;
  • cresc sau scad functie de presiunea din butelii.

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