Regulated Power Supplies – Exercise – 3

106. The output of a loaded power supply is ________ that of the unloaded.

(a) the same as
(b) larger than
(c) smaller than
(d) None of the above

Answer
Answer : (c)
Explanation
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107. The frequency of the output voltage of a full-wave rectifier is ________ the frequency of its input voltage.

(a) the same as
(b) twice
(c) one-half
(d) one-third

Answer
Answer : (b)
Explanation
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108. The charging and discharging of the capacitor filter take ________ of the period of the input voltage.

(a) 0.25
(b) 0.5
(c) 0.75
(d) 1

Answer
Answer : (b)
Explanation
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109. The ripple voltage Vr is a result of the ________.

(a) conduction of the diode(s)
(b) transformer windings
(c) charging and discharging of the capacitor
(d) load resistor

Answer
Answer : (c)
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110. The ________ the diode conduction time, the ________ the amount of the charging current through the capacitor filter.

(a) shorter, larger
(b) shorter, smaller
(c) longer, larger
(d) None of the above

Answer
Answer : (a)
Explanation
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