Basic Electronics (3110016) MCQs

MCQs of Diode theory and applications

Showing 91 to 100 out of 108 Questions
6 7 8 9 10 11
91.
If line frequency is 60 Hz, the output frequency of a half-wave rectifier is
(a) 30 Hz
(b) 60 Hz
(c) 120 Hz
(d) 240 Hz
Answer:

Option (b)

92.
If line frequency is 60 Hz, the output frequency of a bridge rectifier is
(a) 30 Hz
(b) 60 Hz
(c) 120 Hz
(d) 240 Hz
Answer:

Option (c)

93.
With the same secondary voltage and filter, which has the most ripple?
(a) Half-wave rectifier
(b) Full-wave rectifier
(c) Bridge rectifier
(d) Impossible to say
Answer:

Option (a)

94.
With the same secondary voltage and filter, which produces the least load voltage?
(a) Half-wave rectifier
(b) Full-wave rectifier
(c) Bridge rectifier
(d) Impossible to say
Answer:

Option (b)

95.
If the filtered load current is 10 mA, which of the following has a diode current of 10 mA?
(a) Half-wave rectifier
(b) Full-wave rectifier
(c) Bridge rectifier
(d) Impossible to say
Answer:

Option (a)

96.
If the load current is 5 mA and the filter capacitance is 1000 µF, what is the peak to peak ripple out of a bridge rectifier?
(a) 21.3 pV
(b) 56.3 pV
(c) 21.3 mV
(d) 41.7 mV
Answer:

Option (d)

97.
The diodes in a bridge rectifier each have a maximum DC current rating of 2 A. This means the DC load current can have a maximum value of
(a) 1 A
(b) 2 A
(c) 4 A
(d) 8 A
Answer:

Option (c)

98.
What is the PIV across each diode of a bridge rectifier with a secondary voltage of 20 V RMS?
(a) 14.1 V
(b) 20 V
(c) 28.3 V
(d) 34 V
Answer:

Option (c)

99.
If the secondary voltage increases in a bridge rectifier with a capacitor-input filter, the load voltage will
(a) Decrease
(b) Stay the same
(c) Increase
(d) None of these
Answer:

Option (c)

100.
If the filter capacitance is increased, the ripple will
(a) Decrease
(b) Stay the same
(c) Increase
(d) None of these
Answer:

Option (a)

Showing 91 to 100 out of 108 Questions
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