
CA_3
Authored by Alexandre Figueiredo
Physics
9th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se tiver uma frequência de 50Hz, o período T é:
0.02 s
0.02 m
0.5 s
0.0005 s
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se tivermos um circuito puramente resistivo, com uma resistência de 100 ohm e uma corrente de 10 A, a potência é:
1000 W
1000 V
250 W
5000W
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O símbolo da reatância indutiva é:
XL
L
f
w
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O coeficiente de auto-indução representa-se por:
L
XL
f
w
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A potencia ativa representa-se por :
P
S
Q
pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A unidade da potencia ativa é:
W
VA
VAr
m
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A potencia aparente representa-se por ..... e a sua unidade é.....:
S e a unidade é VA
S e a unidade é W
P e a unidade é VA
Q e a unidade é VAr
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