ALIAJE MAGNETIC MOI_2
Quiz
•
Instructional Technology
•
9th Grade
•
Practice Problem
•
Hard
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
ALIAJE FIER-COBALT
generatoare ultrasonice
ALIAJE NICHEL-CUPRU
piese compacte
PELICULE FEROMAGNETICE
compensarea erorilor de temperatură
ALIAJE FIER-SILICIU-ALUMINIU
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.
compensează erorile de temperatură
ALIAJ NICHEL-CROM-FIER
are permeabilitate magnetică mare
ALIAJ ALSIFER
se prelucrează greu
ALIAJ HYPERM
se obține prin sinterizare
ALIAJ SUPERMALLOY
au rezistivitate mare
FERITE MOI
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