
ALIAJE MAGNETIC MOI_2
Instructional Technology
9th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Aliajele fier-cobalt se caracterizează prin:
câmp coercitiv mare
inducţie de saturaţie mare
inducţie remanentă mare
rezistivitate mare
2.
DRAG AND DROP QUESTION
30 sec • 10 pts
Aliajele fier- (a) se numesc permalloy, iar aliajele fier- (b) se numesc permendur.
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Aliajele cu ciclul de histerezis dreptunghiular sunt aliaje fier-nichel care conţin 50% nichel.
adevărat
fals
depinde de conținutul de nichel
depinde conținutul de fier
4.
MATCH QUESTION
1 min • 10 pts
Asociază fiecărui material magnetic moale, utilizarea corespunzătoare.
scanere magnetice
FERITE MOI
piese compacte
ALIAJE NICHEL-CUPRU
compensarea erorilor de temperatură
ALIAJE FIER-COBALT
generatoare ultrasonice
ALIAJE FIER-SILICIU-ALUMINIU
ecrane magnetice
PELICULE FEROMAGNETICE
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Aliajele fier-nichel caracterizate prin permeabilitate magnetică constantă în domeniul câmpurilor magnetice slabe se numesc:
permendur
perminvar
permenorm
permalloy
6.
DROPDOWN QUESTION
45 sec • 10 pts
Aliajele fier-cobalt se caracterizează prin inducţie de saturaţie (a) , datorită conținutului ridicat de (b) , de (c) .
7.
MATCH QUESTION
1 min • 10 pts
Asociază fiecărui material magnetic moale, caracterizarea corespunzătoare.
se obține prin sinterizare
ALIAJ HYPERM
se prelucrează greu
ALIAJ ALSIFER
au rezistivitate mare
ALIAJ SUPERMALLOY
compensează erorile de temperatură
FERITE MOI
are permeabilitate magnetică mare
ALIAJ NICHEL-CROM-FIER
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