ALIAJE MAGNETIC MOI_2
Quiz
•
Instructional Technology
•
9th Grade
•
Hard
Used 4+ times
FREE Resource
10 questions
Show all answers
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.
piese compacte
ALIAJE NICHEL-CUPRU
generatoare ultrasonice
ALIAJE FIER-SILICIU-ALUMINIU
scanere magnetice
ALIAJE FIER-COBALT
compensarea erorilor de temperatură
PELICULE FEROMAGNETICE
ecrane magnetice
FERITE MOI
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.
au rezistivitate mare
ALIAJ ALSIFER
compensează erorile de temperatură
ALIAJ SUPERMALLOY
are permeabilitate magnetică mare
ALIAJ HYPERM
se obține prin sinterizare
ALIAJ NICHEL-CROM-FIER
se prelucrează greu
FERITE MOI
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