The mark-to-space ratio of the waveform shown is
- A to D / D to E.
- D to E / D to C.
- A to B / B to C.
Explanation from PART66Online
Mark-to-space ratio compares the time the waveform holds its high level with the time it holds its low level, so it is a ratio of two intervals measured along the time axis. A to D is the mark and D to E is the space. The other options divide a time by a voltage or compare two voltage levels, and neither of those gives a mark-to-space ratio.
S
subufer asked · 29 Nov 2015
Please explain this one, I don't understand, thank you.
Community Comments (6)
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PART66Online
29 Nov 2015
You just need to know what is the mark-to-space ratio.
Have a look on this picture: doctronics.co.uk/images/sig_21.gif
Have a look on this picture: doctronics.co.uk/images/sig_21.gif
S
subufer
29 Nov 2015
thank you
P
PART66Online
29 Nov 2015
So what is the ratio in this question? :)
S
subufer
29 Nov 2015
thank you
S
subufer
29 Nov 2015
A to D / D to E Marked(A to D) to space(D to E)
P
PART66Online
30 Nov 2015
This is definition, but exact mark-to-space ratio here is 1.
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