ATT TEST 8 QUESTIONS WITH ANSWERS  

ATT TEST 8 QUESTIONS WITH
ANSWERS

, What are 5 parts of a power supply? - ANSWERSInput, rectifier, filter, regulator,
protection

Which two parts of a power supply are optional? - ANSWERSRegulator and protection

What is the purpose of a power supply? - ANSWERSTo convert AC power into smooth
DC power

What does the input of a power supply do? - ANSWERSStep up or down the AC input
voltage

What does the rectifier do in a power supply? - ANSWERSChanges AC into pulsating
DC

What does the filter do in a power supply? - ANSWERSChanges pulsating DC into
smooth DC

How type of components do filters use? - ANSWERSReactive components

What does a regulator do in a power supply? - ANSWERSmaintains the output voltage
at a constant level despite changes in load current

What does the protection circuit do in power supply? - ANSWERSPrevents damage to
power supply if load becomes faulty, limits or disables output

The half wave rectifier is the same as what circuit? - ANSWERSSeries limiter

Which rectifier is the least efficient using only half the input? - ANSWERSHalf-wave

Which two rectifiers require two input signals 180 degrees out of phase? -
ANSWERSFull-wave and bridge

Which rectifier uses a center tapped transformer? - ANSWERSFull wave

How is frequency determined for half wave rectifier? - ANSWERSOutput frequency is
same as input frequency

How is frequency determined for full wave rectifier? - ANSWERSOutput is twice the
input frequency

How is frequency determined for bridge rectifier? - ANSWERSOutput is twice the input
frequency