ATT Test 8 Exam – Exam Questions and Answers Graded A+

ATT TEST 8 EXAM ATT TEST 8 EXAM




ATT TEST 8 EXAM QUESTIONS AND ANSWERS GRADED A+




1. What are 5 parts of a power supply? Input, rectifier, filter,
regulator, protection
2. Which two parts of a power supply are optional?
Regulator and protection
3. What is the purpose of a power supply? To convert AC
power into smooth DC power
4. What does the input of a power supply do? Step up or
down the AC input voltage
5. What does the rectifier do in a power supply? Changes AC
into pulsating DC
6. What does the filter do in a power supply? Changes
pulsating DC into smooth DC
7. How type of components does filters use? Reactive
components
1/
13

,ATT TEST 8 EXAM ATT TEST 8 EXAM




8. What does a regulator do in a power supply? maintains the
output voltage at a constant level despite changes in load current
9. What does the protection circuit do in power supply?
Prevents damage to power supply if load becomes faulty, limits or
disables output
10. The half wave rectifier is the same as what circuit?
Series limiter
11. Which rectifier is the least efficient using only half
the input? Half-wave
12. Which two rectifiers require two input signals 180
degrees out of phase? -
Full-wave and bridge
13. Which rectifier uses a center tapped transformer?
Full wave
14. How is frequency determined for half wave rectifier?

Output frequency is same as input frequency
15. How is frequency determined for full wave rectifier?
Output is twice the input frequency
16. How is frequency determined for bridge rectifier?
Output is twice the input frequency
17. What is the purpose of series voltage regulators? To

adjust voltage drop to maintain V out at constant level
18. In a series voltage regulator, V out INCREASES

2/
13