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If I rectify 10Vac (rms) by diodes without a voltage drop to a full wave pulsating dc,
the peak voltage would be Vrms x square root of 2 = 14.142135V
The dc (average) voltage would be <p>2V peak/pi = 9.00316V,<p>
And the ac voltage would be 4.35236V (the rms value of the ripple)<p>
 
I have adjusted the supply voltage to get 9.003V on the Vdc voltmeter.<p>
To get rid of the voltage drop over the diodes, I am measuring the AC through 2 diodes on each polarity. The Multisim measurements are different from mine, and since they are also calculated, I wonder what formulas they use.