Question 1

What is the purpose of a diode in a DC power supply circuit?

Accepted Answer

To convert AC voltage to DC voltage

Answer

To store electrical energy

Answer

To increase the voltage output

Answer

To regulate the current flow

Question 2

What is the purpose of a voltage regulator in a DC power supply circuit?

Accepted Answer

To maintain a constant output voltage

Answer

To increase the input voltage

Answer

To filter out noise in the circuit

Answer

To convert AC voltage to DC voltage

Question 3

What is the purpose of a filter in a power supply circuit?

Accepted Answer

To smoothen the output voltage

Answer

To increase the input voltage

Answer

To regulate the current flow

Answer

To convert AC voltage to DC voltage

Question 4

What is the purpose of a voltage divider circuit?

Accepted Answer

To obtain a lower voltage from a higher voltage source

Answer

To convert AC voltage to DC voltage

Answer

To increase the voltage output

Answer

To regulate the current flow

Question 5

What is the purpose of a full-wave rectifier in a power supply unit?

Accepted Answer

To convert both halves of the AC waveform into DC voltage

Answer

To regulate the current flow

Answer

To increase the voltage output

Answer

To filter out noise in the circuit

Question 6

What is the purpose of a Zener diode voltage regulator circuit in a power supply unit?

Accepted Answer

To maintain a constant output voltage despite changes in input voltage

Answer

To filter out noise in the circuit

Answer

To increase the voltage output

Answer

To convert AC voltage to DC voltage

Question 7

What is the function of a phi filter in a power supply circuit?

Accepted Answer

To filter out high-frequency noise

Answer

To increase the voltage output

Answer

To convert AC voltage to DC voltage

Answer

To regulate the current flow

Question 8

Which component is commonly used as a voltage reference in a power supply circuit?

Accepted Answer

Zener diode

Answer

Resistor

Answer

Capacitor

Answer

Transistor

Question 9

What is the main objective of a DC power supply circuit?

Accepted Answer

To provide a steady and regulated DC voltage

Answer

To regulate the current flow

Answer

To increase the voltage output

Answer

To convert AC voltage to DC voltage

Question 10

In a full-wave rectifier circuit, the output voltage is a continuous, smooth DC signal.

Accepted Answer

false

Answer

true

Question 11

A voltage regulator is essential in a power supply circuit to ensure a constant output voltage, even with varying input voltage and load conditions.

Accepted Answer

true

Answer

false

Question 12

A voltage divider circuit can be used to obtain a fraction of the input voltage, and the output voltage is determined by the ratio of the resistances used in the circuit

Accepted Answer

true

Answer

false

Question 13

A Phi filter circuit typically consists of an inductor, a capacitor, and a resistor to further filter the output voltage and reduce ripple

Accepted Answer

true

Answer

false

Question 14

Which of the following components is responsible for maintaining a constant output voltage in a power supply circuit?

Accepted Answer

voltage regulator

Question 15

Which type of rectifier circuit is most commonly used in power supplies to convert AC to pulsating DC?

Accepted Answer

full wave rectifier

Question 16

In a voltage divider circuit, if the total resistance increases while the input voltage remains constant, what happens to the output voltage?

Accepted Answer

The output voltage decreases

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