# Electronics Quiz On Diode Applications!

34 Questions | Total Attempts: 2622  Settings  .

• 1.
The average value of a half-wave rectified voltage with a peak value of 200V is
• A.

63.7V

• B.

127.3 V

• C.

141 V

• D.

0 V

• 2.
When a 60Hz sinusoidal voltage is applied to the input of a half-wave rectifier, the output frequency is
• A.

120 Hz

• B.

30 Hz

• C.

60 Hz

• D.

0 Hz

• 3.
The peak value of the input to the half-wave rectifier is 10V. The approximate peak value of the output is
• A.

10 V

• B.

3.18 V

• C.

10.7 V

• D.

9.3 V

• 4.
The diode, in a half wave rectifier with a peak input of 10V, must be able to withstand a reverse voltage of
• A.

10 V

• B.

5 V

• C.

20 V

• D.

3.18 V

• 5.
The average value of a full-wave rectified voltage with a peak value of 75V is
• A.

53 V

• B.

47.8 V

• C.

37.5 V

• D.

23.9 V

• 6.
When a 60Hz sinusoidal voltage is applied to the input of a full-wave rectifier, the output frequency is
• A.

120 Hz

• B.

60 Hz

• C.

240 Hz

• D.

0 Hz

• 7.
The total secondary voltage in a center-tapped full-wave rectifier is 125Vrms. Neglecting the diode drop, the rms output voltage is
• A.

125 V

• B.

177 V

• C.

100 V

• D.

62.5 V

• 8.
When the peak output voltage is 100V, the PIV for each diode in a center-tapped full-wave rectifier is (neglecting the diode drop)
• A.

100 V

• B.

200 V

• C.

141 V

• D.

50 V

• 9.
When the rms output voltage of a bridge full-wave rectifier is 20V, the peak inverse voltage across the diodes is (neglecting the diode drop)
• A.

20 V

• B.

40 V

• C.

28.3 V

• D.

56.6 V

• 10.
The ideal dc output voltage of a capacitor-input filter is equal to
• A.

The peak value of the rectified voltage

• B.

The average value of the rectified voltage

• C.

The rms value of the rectified voltage

• D.

Twice the value of the rectified voltage

• 11.
A certain power-supply filter produces an output with a ripple of 100mV peak-to-peak and a dc value of 20V. The ripple factor is
• A.

0.05

• B.

0.005

• C.

0.00005

• D.

0.02

• 12.
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
• A.

0.6 V

• B.

6 mV

• C.

5.0 V

• D.

2.88 V

• 13.
If the load resistance of a capacitor-filtered full-wave rectifier is reduced, the ripple voltage
• A.

Increases

• B.

Is not affected

• C.

Decreases

• D.

Has a different frequency

• 14.
Line regulation is determined by
• A.

• B.

• C.

• D.

Changes in zener current and load current

• 15.
• A.

Changes in load current and input voltage

• B.

Changes in load current and output voltage

• C.

Changes in load resistance and input voltage

• D.

Changes in zener current and load current

• 16.
A 10 V peak-to-peak sinusoidal voltage is applied across a silicon diode and series resistor. The maximum voltage across the diode is
• A.

9.3 V

• B.

5 V

• C.

0.7 V

• D.

10 V

• E.

4.3 V

• 17.
In the input voltage to a voltage tripler has an rms value of 12 V, the dc output voltage is approximately
• A.

36 V

• B.

50.9 V

• C.

33.9 V

• D.

32.4 V

• 18.
If one of the diode in a bridge full-wave rectifier opens, the output is
• A.

0 V

• B.

A half-wave rectified voltage

• C.

One-fourth the amplitude of the input voltage

• D.

A 120 Hz voltage

• 19.
If you are checking a 60Hz full-wave bridge rectifier and observe that the output has a 60Hz ripple,
• A.

The circuit is working properly

• B.

The transformer secondary is shorted

• C.

There is an open diode

• D.

The filter capacitor is leaky

• 20.
If one of the diode in a half-wave rectifier opens, the output is
• A.

0 V

• B.

A half-wave rectified voltage

• C.

One-fourth the amplitude of the input voltage

• D.

A 120 Hz voltage

• 21.
If one of the diodes in a bridge rectifier shorts,
• A.

The shorted diode may still function

• B.

The transformer will be damaged

• C.

The circuit will be half-wave rectifier

• D.

• 22.
When the primary winding of the transformer in a power supply opens, output voltage is
• A.

0 V

• B.

A half-wave rectified voltage

• C.

One-fourth the amplitude of the input voltage

• D.

A 120 Hz voltage

• 23.
In a half-wave rectifier, the current through the load is approximately
• A.

The same as the input cycle

• B.

50% of the input cycle

• C.

One-fourth the amplitude of the input current

• D.

A 60Hz current

• 24.
Which of the following is true?
• A.

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

• B.

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

• C.

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

• D.

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

• 25.
Which type of full-wave rectifier has the greater output voltage for the same input voltage and transformer turns ratio?
• A.

Center-tapped full-wave rectifier

• B.

Bridge full-wave rectifier

• C.

Non-center-tapped full-wave rectifier

• D.

All (a), (b) and (c) have the same output voltage

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