Regulated Power Supplies and Diodes Quiz

What is the primary function of a regulated power supply?

• To generate high-frequency signals

• To provide a stable and controlled output voltage or current

• To amplify input signals

• To increase power consumption

Why are regulated power supplies essential in electronic circuits?

• They increase voltage fluctuations

• They ensure reliable and safe operation of electronic components

• They reduce power consumption to zero

• They convert AC to DC without regulation

What happens if the input voltage fluctuates in a regulated power supply?

• The output voltage remains stable

• The output voltage fluctuates significantly

• The circuit stops working

• The output voltage increases

What internal feature helps a regulated power supply maintain a consistent output voltage?

• External amplifiers

• Internal circuitry

• Mechanical switches

• Cooling fans

Regulated power supplies are used to power:

• Electronic circuits and devices

• Mechanical gears

• Water pumps

• Gas engines

Which of the following is a benefit of regulated power supplies?

• Increases input voltage

• Reduces the efficiency of circuits

• Ensures stable voltage regardless of load conditions

• Generates unstable current

What would happen if an electronic device used an unregulated power supply instead of a regulated one?

• The device may experience voltage fluctuations and possible damage

• The device would perform better

• The device would use less power

• The output voltage would become more stable

Regulated power supplies help prevent damage caused by:

• Excessive mechanical stress

• Voltage fluctuations

• Overheating of water pumps

• Low battery levels

Which of the following does NOT describe a regulated power supply?

• Provides a stable voltage output

• Reacts to changes in load conditions

• Generates random voltage variations

• Uses internal circuitry to maintain stability

What is the role of internal circuitry in a regulated power supply?

• To amplify input signals

• To convert DC to AC

• To maintain a consistent output voltage or current

• To store electrical energy