
Eletricidade e Semicondutores

Quiz
•
Professional Development
•
Professional Development
•
Hard
Artur Triformis
Used 1+ times
FREE Resource
41 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a unidade da resistência eléctrica?
Volt
Ampere
Ohm
Watt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se U = 12 V e R = 4 ohm, qual é a corrente?
48 A
3 A
0,3 A
16 A
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na corrente alternada, a impedância substitui:
A tensão
A potência
A resistência
A reatância
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A Lei de Ohm em corrente alternada utiliza:
Resistência apenas
Reactância
Impedância (Z)
Condutância
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O valor eficaz de uma tensão senoidal de pico 325 V é:
115 V
162,5 V
230 V
325 V
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O valor eficaz representa:
A amplitude máxima
A média da tensão
O valor equivalente em energia à tensão contínua
O valor de pico
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A tensão de pico de uma tensão eficaz de 230 V é:
115 V
162,5 V
325 V
230 V
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