ATT TEST 8 PRACTICE EXAM WITH COMPLETE STUDY GUIDE QUESTIONS WITH 100% CORRECT ANSWERS CURRENTLY TESTED AND APPROVED

ATT TEST 8 PRACTICE EXAM WITH
COMPLETE STUDY GUIDE QUESTIONS WITH
100% CORRECT ANSWERS CURRENTLY
TESTED AND APPROVED



What makes a zener diode different from junction diode?

Zener diode is designed operate in breakdown




When does zener diode conduct reverse current?

When reverse bias voltage is HIGHER than Vz (diode acts like
resistor)




What does the filter do in a power supply?

Changes pulsating DC into smooth DC




How type of components do filters use?

Reactive components
pg. 1

,What does a regulator do in a power supply?

maintains the output voltage at a constant level despite changes in
load current




What does the protection circuit do in power supply?

Prevents damage to power supply if load becomes faulty, limits or
disables output




The half wave rectifier is the same as what circuit?

Series limiter




Which rectifier is the least efficient using only half the input?

Half-wave




pg. 2

, What are 5 parts of a power supply?

Input, rectifier, filter, regulator, protection




Which two parts of a power supply are optional?

Regulator and protection




What is the purpose of a power supply?

To convert AC power into smooth DC power




What does the input of a power supply do?

Step up or down the AC input voltage




What does the rectifier do in a power supply?

Changes AC into pulsating DC




pg. 3