Macchine motrici
Quiz
•
Instructional Technology
•
6th Grade
•
Hard
Giovanna Ferrara
Used 12+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Le macchine motrici trasformano altre forme di energia in
energia termica
energia meccanica
energia elettrica
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Il rendimento di una macchina è dato da:
energia in uscita x energia in ingresso (moltiplicazione)
energia in uscita + energia in ingresso (addizione)
energia in uscita : energia in ingresso (divisione)
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
L'attrito è:
una forza che attrae i corpi verso il centro della terra
una forza che si oppone al movimento dei corpi
una forza che si oppone alla deformazione di una molla
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
L'attrito fra due corpi si chiama volvente quando
un corpo striscia su un altro
un corpo rotola su un altro
i due corpi sono fermi l'uno rispetto all'altro
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In una macchina a vapore il combustibile è:
carbone
benzina
gasolio
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In un motore a scoppio la combustione avviene
dentro il cilindro motore
fuori dal cilindro motore
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Quante fasi di funzionamento ci sono in un mote a benzina?
1
2
3
4
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