ATT Test 8
ATT Test 8 Questions and Answers
Question 1
What are 5 parts of a power supply?
Correct Answer
Input, rectifier, filter, regulator, protection
Question 2
Which two parts of a power supply are optional?
Correct Answer
Regulator and protection
Question 3
What is the purpose of a power supply?
Correct Answer
To convert AC power into smooth DC power
Question 4
What does the input of a power supply do?
Correct Answer
Step up or down the AC input voltage
Question 5
What does the rectifier do in a power supply?
Correct Answer
Changes AC into pulsating DC
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, ATT Test 8
Question 6
What does the filter do in a power supply?
Correct Answer
Changes pulsating DC into smooth DC
Question 7
How type of components do filters use?
Correct Answer
Reactive components
Question 8
What does a regulator do in a power supply?
Correct Answer
maintains the output voltage at a constant level despite changes in load current
Question 9
What does the protection circuit do in power supply?
Correct Answer
Prevents damage to power supply if load becomes faulty, limits or disables output
Question 10
The half wave rectifier is the same as what circuit?
Correct Answer
Series limiter
Question 11
Which rectifier is the least efficient using only half the input?
Correct Answer
Half-wave
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, ATT Test 8
Question 12
Which two rectifiers require two input signals 180 degrees out of phase?
Correct Answer
Full-wave and bridge
Question 13
Which rectifier uses a center tapped transformer?
Correct Answer
Full wave
Question 14
How is frequency determined for half wave rectifier?
Correct Answer
Output frequency is same as input frequency
Question 15
How is frequency determined for full wave rectifier?
Correct Answer
Output is twice the input frequency
Question 16
How is frequency determined for bridge rectifier?
Correct Answer
Output is twice the input frequency
Question 17
What is the purpose of series voltage regulators?
Correct Answer
To adjust voltage drop to maintain V out at constant level
Page 3 of 18
ATT Test 8 Questions and Answers
Question 1
What are 5 parts of a power supply?
Correct Answer
Input, rectifier, filter, regulator, protection
Question 2
Which two parts of a power supply are optional?
Correct Answer
Regulator and protection
Question 3
What is the purpose of a power supply?
Correct Answer
To convert AC power into smooth DC power
Question 4
What does the input of a power supply do?
Correct Answer
Step up or down the AC input voltage
Question 5
What does the rectifier do in a power supply?
Correct Answer
Changes AC into pulsating DC
Page 1 of 18
, ATT Test 8
Question 6
What does the filter do in a power supply?
Correct Answer
Changes pulsating DC into smooth DC
Question 7
How type of components do filters use?
Correct Answer
Reactive components
Question 8
What does a regulator do in a power supply?
Correct Answer
maintains the output voltage at a constant level despite changes in load current
Question 9
What does the protection circuit do in power supply?
Correct Answer
Prevents damage to power supply if load becomes faulty, limits or disables output
Question 10
The half wave rectifier is the same as what circuit?
Correct Answer
Series limiter
Question 11
Which rectifier is the least efficient using only half the input?
Correct Answer
Half-wave
Page 2 of 18
, ATT Test 8
Question 12
Which two rectifiers require two input signals 180 degrees out of phase?
Correct Answer
Full-wave and bridge
Question 13
Which rectifier uses a center tapped transformer?
Correct Answer
Full wave
Question 14
How is frequency determined for half wave rectifier?
Correct Answer
Output frequency is same as input frequency
Question 15
How is frequency determined for full wave rectifier?
Correct Answer
Output is twice the input frequency
Question 16
How is frequency determined for bridge rectifier?
Correct Answer
Output is twice the input frequency
Question 17
What is the purpose of series voltage regulators?
Correct Answer
To adjust voltage drop to maintain V out at constant level
Page 3 of 18
