Electronics - Diode Applications

The average value of a half-wave rectified voltage with a peak value of 200V is

• 63.7V

• 127.3 V

• 141 V

• 0 V

A capacitor in a power supply used to reduced the variation of the output voltage from a rectifier.

• filter

• mica

• ceramic

• mylar

A 60V peak full-wave rectified voltage is applied to a capacitor-input filter. If f = 120 Hz, RL=10 kΩ and C=10 µF, the ripple voltage is

• 0.6 V

• 6 mV

• 5 V

• 2.88 V

The peak value of the input to the half-wave rectifier is 10V. The approximate peak value of the output is

• 10 V

• 3.18 V

• 10.7 V

• 9.3 V

Which of the following is true?

• A full-wave voltage occurs on each half of the input cycle and has the frequency of twice the input frequency.

• A half-wave voltage occurs once each input cycle and has the frequency equal to the half of the input frequency

• A full-wave voltage occurs on each half of the input cycle and has the period twice the input period.

• A half-wave voltage occurs once each half of the input cycle and has the frequency equal to the half of the input frequency.

If you are checking a 60Hz full-wave bridge rectifier and observe that the output has a 60Hz ripple,

• The circuit is working properly

• The transformer secondary is shorted

• There is an open diode

• The filter capacitor is leaky

When a 60Hz sinusoidal voltage is applied to the input of a full-wave rectifier, the output frequency is

• 120 Hz

• 60 Hz

• 240 Hz

• 0 Hz

If one of the diode in a half-wave rectifier opens, the output is

• 0 V

• A half-wave rectified voltage

• One-fourth the amplitude of the input voltage

• A 120 Hz voltage

The maximum value of reverse voltage which occurs at the peak of the input cycle when the diode is reversed-biased.

• rms voltage

• peak voltage

• average voltage

• peak inverse voltage

If the load resistance of a capacitor-filtered full-wave rectifier is reduced, the ripple voltage

• increase

• is not affected

• decreases

• has a differ frequency