A D.C power supply unit provides an output power of 60V at no load and 56V at full load. The ripple component of the output voltage is 1.25 V rms. Determine the percentage:

-

 (I) Voltage regulation

Soln

% voltage regulation = {(no load voltage - full load voltage)/(full load voltage)} x 100

 ={ (60-56)/60} x 100

= 7.1425%

(II) ripple

Soln

Ripple factor = V ac(rms) /V dc

                        = 1.25 v/ 56V

                         = 2.232%

Comments

Post a Comment

Popular posts from this blog

Properties of a cathode used in thermionic valves.

-
 It should have a low work function. A low work function helps to emit electrons from the cathode surface in a comparatively lower temperature It should have a high melting point. The temperature required to emit an electron from the cathode surface is quite high compared to the melting point of normal metals. A lower melting point causes vaporization of metals before they emit electrons. It should have high mechanical strength.
Read more

Difference between Bipolar junction transistor and Unipolar junction transistor.

-
                 a)      Bipolar junction transistors has both majority charge carriers and minority charge carriers                               while Unipolar junction transistor has only one type of charge carrier(majority).                b)      Bipolar junction transistor is a current controlled device while unipolar junction transistor is a                          voltage controlled device.               c)     BJT has low input impedance while unipolar transistor   has high input impedance.               d)     BJT has a high gain while unipolar junction transist...
Read more