81. What is the ratio of the period of the output voltage to the period of the input voltage in a full-wave rectifier?
(a) 0
(b) 0.5
(c) 1
(d) 2
82. If the value of full-load voltage is the same as the no-load voltage, the voltage regulation calculated is ________ %, which is the best expected.
(a) 0
(b) 1
(c) 99
(d) 100
83. A ________ -wave rectified signal has less ripple than a ________ -wave rectified signal and is thus better to apply to a filter.
(a) full, half
(b) half, full
(c) half, half
(d) full, full
84. In which period is the capacitor filter charged in a full-wave rectifier?
(a) The time during the positive cycle
(b) The time during which the diodes are not conducting
(c) The time during which the diode(s) is (are) conducting
(d) The time during the negative cycle
85. Calculate the ripple of a capacitor filter for a peak rectified voltage of 40 V, a capacitor value C = 75 μF, and a load current of 40 mA.
(a) 3.2%
(b) 3.59%
(c) 4.03%
(d) 4.59%
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