Ace Your Power Supply Knowledge with the 8.1.4 Practice Exam

Dive deep into the heart of amateur radio equipment with hamshack.ca’s 8.1.4 Power Supplies Practice Exam. Tailored for advanced amateur radio students, this exam challenges you to master every aspect of power supply systems, from the basics of transformer and rectifier circuits to the complexities of regulated power supplies and everything in between. Whether you’re a seasoned operator or gearing up for the Advanced Amateur Radio certification, this practice exam is your ultimate test of knowledge and troubleshooting skills in power supply technology.

Key Exam Topics:

  • Transformers and Rectifiers: Decode the essentials of AC to DC conversion.
  • Voltage Doubling and PIPs: Amplify your understanding of voltage output.
  • Filter Circuits: Smooth out the noise with advanced filtering techniques.
  • Linear vs. Switching Regulators: Navigate the efficiencies and applications of voltage regulation.
  • Regulated Power Supplies: Guarantee stable operation for your radio equipment.

Featuring 25 questions from the Advanced Amateur Radio question bank, the 8.1.4 Power Supplies Practice Exam offers a comprehensive review of power supply mechanisms crucial for any radio setup. With the flexibility of multiple attempts and direct links for in-depth course reviews.

 

The 8.1.4 Power Supplies exam comprehensively tests your understanding of essential power supply concepts based on the course material, focusing on transformer and rectifier circuits, voltage doubling, PIPs, filter circuits, bleeder resistors, and both linear and switching voltage regulators. It aims to validate your ability to apply these principles in designing and troubleshooting regulated power supplies, critical for amateur radio operation. This exam is a key step for those on the path to Spectrum Management Advanced Certification, ensuring a solid foundation in power supply systems.
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8.1.4 Power Supplies Exam

Advanced Amateur Radio – Power Supplies Exam

Prepare to test your knowledge with the 8.1.4 Power Supplies exam, a critical assessment designed for advanced amateur radio operators. This exam covers key topics such as transformer and rectifier circuits, voltage doublers, filter circuits, and the design of linear and switching voltage regulators. It’s an opportunity to demonstrate your understanding of regulated power supplies and their application in radio transmitters and signal processing. Gear up to showcase your skills and take one step closer to mastering the intricacies of amateur radio power supply systems through this 25 question practice exam.

1 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-006: The dynamic regulation of a power supply is improved by increasing the value of:

2 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-010: In a regulated power supply, the output of the electrolytic filter capacitor is connected to the:

3 / 25

Category: Transformer and rectifier circuits, voltage doubler circuit, PIPs

A-004-001-009: What are the two major ratings that must not be exceeded for silicon-diode rectifiers used in power-supply circuits?

4 / 25

Category: Linear and switching voltage regulator circuits

A-004-003-011: A modern type of regulator, which features a reference, high-gain amplifier, temperature-compensated voltage sensing resistors and transistors as well as a pass element is commonly referred to as a:

5 / 25

Category: Linear and switching voltage regulator circuits

A-004-003-004: What type of linear regulator is used in applications requiring efficient utilization of the primary power source?

6 / 25

Category: Filter circuits, bleeder resistor functions

A-004-002-010: Excessive rectifier peak current and abnormally high peak inverse voltages can be caused in a power supply by the filter forming a:

7 / 25

Category: Linear and switching voltage regulator circuits

A-004-003-003: What device is typically used as a stable reference voltage in a linear voltage regulator?

8 / 25

Category: Filter circuits, bleeder resistor functions

A-004-002-009: In the design of a power supply, the designer must be careful of resonance effects because the ripple voltage could build up to a high value. The components that must be carefully selected are:

9 / 25

Category: Linear and switching voltage regulator circuits

A-004-003-007: What is a three-terminal regulator?

10 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-011: In a regulated power supply, a diode connected across the input and output terminals of a regulator is used to:

11 / 25

Category: Filter circuits, bleeder resistor functions

A-004-002-003: The advantage of the capacitor input filter over the choke input filter is:

12 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-009: In a regulated power supply, components that conduct alternating current at the input before the transformer and direct current before the output are:

13 / 25

Category: Linear and switching voltage regulator circuits

A-004-003-010: When extremely low ripple is required, or when the voltage supplied to the load must remain constant under conditions of large fluctuations of current and line voltage, a closed-loop amplifier is used to regulate the power supply. There are two main categories of electronic regulators. They are:

14 / 25

Category: Filter circuits, bleeder resistor functions

A-004-002-011: In a properly designed choke input filter power supply, the no-load voltage across the filter capacitor will be about nine-tenths of the AC RMS voltage yet it is advisable to use capacitors rated at the peak transformer voltage. Why is this large safety margin suggested?

15 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-008: In a regulated power supply, four diodes connected together in a BRIDGE act as:

16 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-004: The regulation of long-term changes in the load resistance of a power supply is called:

17 / 25

Category: Filter circuits, bleeder resistor functions

A-004-002-006: The main function of the bleeder resistor in a power supply is to provide a discharge path for the capacitor in the power supply. But it may also be used for a secondary function, which is to:

18 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-002: In any regulated power supply, the output is cleanest and the regulation is best:

19 / 25

Category: Linear and switching voltage regulator circuits

A-004-003-009: What type of voltage regulator contains a voltage reference, error amplifier, sensing resistors and transistors, and a pass element in one package?

20 / 25

Category: Filter circuits, bleeder resistor functions

A-004-002-007: In a power supply, series chokes will:

21 / 25

Category: Linear and switching voltage regulator circuits

A-004-003-001: What is one characteristic of a linear electronic voltage regulator?

22 / 25

Category: Filter circuits, bleeder resistor functions

A-004-002-008: When using a choke input filter, a minimum current should be drawn all the time when the device is switched on. This can be accomplished by:

23 / 25

Category: Transformer and rectifier circuits, voltage doubler circuit, PIPs

A-004-001-007: The ripple frequency produced by a half-wave power supply connected to a normal household circuit is:

24 / 25

Category: Regulated power supplies Transmitters, Modulation, and Processing

A-004-004-003: When discussing a power supply the_______ resistance is equal to the output voltage divided by the total current drawn, including the current drawn by the bleeder resistor:

25 / 25

Category: Transformer and rectifier circuits, voltage doubler circuit, PIPs

A-004-001-003: In a full-wave centre-tap power supply, regardless of load conditions, the peak inverse voltage (PIV) will be _____ times the RMS voltage:

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