Need help.
Which DC current can you measure according to picture a, b, c?

 

hi Paul,
Welcome to AAC.
As this is an Homework assignment, post what you think the answer is to the question, we can help.
E

 

I think its 19,8V because a diode needs 0,7V so 20,5V-0,7V=19,8V

 

hi P,
Consider that the voltage may be stated in 22.5Vac as an RMS value.... what difference would that make to the rectified/ smoothed output voltage.??
E

 

No difference.

 

No difference.

hi,
Usually transformer voltages are specified in RMS, so for example a transformer secondary specified as 10Vac would mean 10V rms.
As you may know the peak voltage output for that transformer would be 10V * 1.414 = 14.14V peak.

So applying the same equations for Vpeak for your 20.5Vrms, what would the peak be and what would the DC voltage output.

I suggest you confirm what the 22.5Veff represents, ask your Tutor.

E

 

hi,

I suggest you confirm what the 22.5Veff represents, ask your Tutor.

E

I think you mean 20.5Veff. It is the same as 20.5V RMS.
http://86.43.94.97/moodlecp9a/mod/glossary/showentry.php?courseid=1&concept=RMS+Voltage

 

Need help.
Which DC current can you measure according to picture a, b, c?

According to the diagram it is the voltage, not the current that should be measured.

 

According to google translate, the question is .... What about DC voltage Can you measure according to picture a, b, c?

 

No difference.

Not correct.
You need to learn the difference be Vrms (Veff) and Vpk.