Alternating Currents Flashcards
1
Q
What is direct current used for?
A
household devices
2
Q
How is alternating current made
A
generators
3
Q
What type of wave is alternating current?
A
sin wave
4
Q
What is the meaning of RMS
A
root mean squared
5
Q
What is the meaning of RMS voltage?
A
Average positive voltage magnitude
6
Q
Oscilloscopes are used to measure what?
A
peak to peak voltage
7
Q
How do you calculate the RMS voltage
A
peak voltage/root 2
8
Q
How do you calculate the RMS current
A
peak current /root 2
9
Q
DC must equal
A
RMS current of AC
10
Q
what’s are the two control on a CRO?
A
time base, Y gain
11
Q
How do you increase the sensitivity of a CRO
A
smaller Y gain
