Mixed Quiz (See related pages) 1 The half-wave rectifier has a diode in parallel with a load resistor. A) True B) False 2 In electronic equipment power supplies, the transformer steps the line voltage up to higher levels that can more easily be used with semiconductor devices. A) True B) False 3 The full-wave rectifier is equivalent to two half-wave rectifiers. A) True B) False 4 The bridge rectifier is similar to a half-wave rectifier because it produces a half-wave output voltage. A) True B) False 5 The choke-input filter is often used because of its low cost and light weight. A) True B) False 6 The peak inverse voltage is the maximum voltage across the conducting diode of a rectifier. A) True B) False 7 For low-voltage power supplies, the integrated circuit has been replaced by the LC filter. A) True B) False 8 It is more often the case that equipment failure is caused by troubles in the power supply. A) True B) False 9 A clamper is a circuit that removes either positive or negative parts of a waveform. A) True B) False 10 A diode circuit used to protect a sensitive circuit is called a . 11 Applying an external voltage to change the reference level of a circuit is called . 12 A is a circuit that adds a dc voltage to the signal? 13 If you a clamper and a peak detector, you get a peak-to-peak detector. 14 Half-wave rectifier voltage produces current flow. 15 A step-up transformer will produce a secondary voltage that is than the primary. 16 Ac ripple measurements can be most accurately made by using a(n) . 17 The is the most popular rectifier circuit. 18 By using rectifier diodes and operating at 60 Hz, what type of power supply can be configured? A) IC B) voltage doubler C) passive D) clipper 19 When neither end of a load resistor is grounded, the load resistor is said to be A) open B) shorted C) a voltage divider D) floating 20 Phasing dots that appear at the upper ends of the transformer’s schematic symbol mean that the dotted ends have the A) same instantaneous phase B) opposite instantaneous phase C) iron core insert D) connection for 60 Hz input 21 What is the small ac load voltage that can be measured (with an oscilloscope) at the output of a choke-input filter? A) peak B) ripple C) surge D) harmonic 22 What is the term for a special kind of high frequency power supply used in computers and monitors? A) crowbar protection B) half-wave C) bridge D) switching regulator 23 The voltage that must be less than the breakdown voltage of the diode as to prevent damage to the diode is the A) peak inverse voltage B) maximum diode voltage C) reverse surge voltage D) maximum peak voltage 24 What is the type of fuse that can temporarily withstand overloads in current? A) overload fuse B) slow-blow fuse C) temporary blow fuse D) fast-acting fuse 25 A circuit that removes all the positive parts of the input signal is a A) positive clipper B) positive clamper C) negative clipper D) positive voltage doubler
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