ATT Test 8 Questions and Answers (100% Correct Answers) Already Graded A+

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ATT Test 8 Questions and Answers (100%
Correct Answers) Already Graded A+

Parts of a power supply Ans: Input, rectifier, filter, regulator,
protection


Optional parts of a power supply Ans: Regulator and protection
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Purpose of a power supply Ans: To convert AC power into smooth
DC power
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Function of the input in a power supply Ans: Step up or down the
AC input voltage


Function of the rectifier in a power supply Ans: Changes AC into
pulsating DC


Function of the filter in a power supply Ans: Changes pulsating DC
into smooth DC


Components used by filters Ans: Reactive components


Function of the regulator in a power supply Ans: Maintains the
output voltage at a constant level despite changes in load
current

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Function of the protection circuit in a power supply Ans: Prevents
damage to power supply if load becomes faulty, limits or disables
output


Half wave rectifier equivalent circuit Ans: Series limiter


Least efficient rectifier using only half the input Ans: Half-wave
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Rectifiers requiring two input signals 180 degrees out of phase
Ans: Full-wave and bridge
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Rectifier using a center tapped transformer Ans: Full wave


Frequency determination for half wave rectifier Ans: Output
frequency is same as input frequency


Frequency determination for full wave rectifier Ans: Output is
twice the input frequency


Frequency determination for bridge rectifier Ans: Output is twice
the input frequency


Purpose of series voltage regulators Ans: To adjust voltage drop to
maintain V out at constant level


V out increase in series voltage regulator Ans: When load current
decreases OR DC input increases