91. Across which of the following components of a power supply does the average (dc) voltage exist?
(a) Diodes
(b) Secondary of the transformer
(c) Capacitor filter
(d) None of the above
92. For what range of load current can voltage regulators be selected for operation?
(a) Hundreds of picoamperes to tens of nanoamperes
(b) Hundreds of picoamperes to tens of milliamperes
(c) Hundreds of milliamperes to tens of amperes
(d) None of the above
93. What is the typical dropout voltage for the 7812 fixed positive voltage regulator?
(a) 4 mV
(b) 100 mV
(c) 1.5 V
(d) 2 V
94. For what range of fixed regulated voltages do the series 78xx regulators provide regulation?
(a) +5 V to +24 V
(b) +5 V to +24 V
(c) –5 V to –24 V
(d) None of the above
95. How many diodes conduct in the full-wave bridge rectifier while the capacitor is being charged?
(a) 1
(b) 2
(c) 3
(d) 4
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