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ATT test 7 (100% Accurate Answers)

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Pulsating DC correct answers Current that varies in amplitude but does not reverse polarity `Not alt. Current because polarity remains the same Protection. correct answers Optional section in an scr power supply. Prevents damage to power supply from excess current flow AC to DC correct answers Diode reflecters Power Supply correct answers AC to DC Half Wave Diode Reflector correct answers AC to DC (VDC=VPeak of secondary x .318) Full Wave Diode Rectifier correct answers AC to DC VAVG= [VPP/2] x .636 If center tapped: VAVG= [VPP/4] x .636 Diodes preform reflection 180° out of phase Bridge Diode Rectifier correct answers Only conducts if forward biased (VAVG= VPEAK x .636) Output: pulsating DC Half Wave rectifier freq correct answers Ripple req: same as input freq Full wave rectifier freq correct answers Ripple freq: twice input freq With half VPEAK output Bridge rectifier freq correct answers Ripple freq: twice input freq Output: twice the voltage of a fullwave Applied voltage is taken across the full potential of the transformer correct answers Advantage of a Bridge vs Fullwave Voltage regulators purpose correct answers Adjust voltage to maintain Eout at a constant level Zener diode normal operation correct answers Fwd biased: low ohms Rev biased: high ohms Zener diode correct answers Series voltage regulator Efficiency of a full wave vs half wave correct answers Full wave is more efficient because an output is developed for entire wave form

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