RO-IEB.AEN / OE2, OE3 / 10

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RO-IEB.AEN / OE2, OE3 / 10
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“ANR — ACT.EL.AEN-OEMP — RO-IEB.AEN / OE2, OE3 / 10” contains 7 questions across 1 collection.

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Traductorul de emisie poate fi si traductor de receptie ?

One correct answer

Da - numai pentru traductorii piezoelectrici
Da - numai pentru tarductorii magnetostrictivi
DA✓ Correct answer
NU

Ultrasunetele, folosite la sondele ultrason navale, pot fi produse de traductori

One correct answer

piezoelectrici✓ Correct answer
electrodinamici
presodinamici
electrochimici

Sondele ultrason folosesc unde ultrasonice ce frecvente mai mari de

One correct answer

20 Hz
20 KHz✓ Correct answer
20 MHz
20 GHz

Functionarea traductorlori magnetostrictivi de ultrasunete

One correct answer

se bazeaza pe propietatea unor materiale care emit particule in mod natural
se bazeaza pe propietatea unor materiale care emit particule atunci cand sunt incalzite
se bazeaza pe modificarea dimensiunilor unei bare de material feromagnetic, plasata intr-un camp magnetic variabil✓ Correct answer
se bazeaza pe propietatea electro-mecano-optice ale unor cristale utilizate ca rezonator

Functionarea traductorlori piezoelectrici de ultrasunete

One correct answer

se bazeaza pe modificarea dimensiunilor unei bare de material feromagnetic, plasata intr-un camp magnetic variabil
se bazeaza pe propietatea electro-mecano-optice ale unor cristale utilizate ca rezonator✓ Correct answer
se bazeaza pe propietatea unor materiale care emit particule in mod natural
se bazeaza pe propietatea unor materiale care emit particule atunci cand sunt incalzite

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