When is an analog multimeter preferred to a digital multimeter?
The correct answer is D: When adjusting circuits for maximum or minimum values. An analog multimeter is preferred to a digital multimeter when adjusting circuits for maximum or minimum values. Analog meters show trends and peaks/valleys better than digital meters, which just show numbers. For amateur radio operators, this makes analog meters useful for tuning. Understanding this helps when selecting test equipment.
Exam Tip
Analog multimeter preferred = when adjusting for maximum/minimum values. Think 'A'nalog 'M'ultimeter = 'A'djusting for 'M'aximum/minimum. Analog meters show trends and peaks/valleys better than digital meters. Not logic circuits, not precision, not frequency - just maximum/minimum adjustment.
Memory Aid
"Analog multimeter preferred = when adjusting for maximum/minimum values. Think 'A'nalog 'M'ultimeter = 'A'djusting for 'M'aximum/minimum. Analog meters show trends and peaks/valleys better than digital meters. Useful for tuning circuits."
Real-World Application
You're tuning a circuit for maximum output. An analog meter's needle moves smoothly, making it easy to see when you reach the peak. A digital meter just shows numbers changing, making it harder to find the exact peak. Analog meters are better for finding maximum or minimum values.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Analog meters aren't better for testing logic circuits - digital meters are better for digital circuits. Logic circuit testing isn't an analog advantage.
Option B: Incorrect. Analog meters don't provide high precision - digital meters have higher precision. Precision isn't an analog advantage.
Option C: Incorrect. Analog meters don't measure oscillator frequency - frequency counters are used for that. Frequency measurement isn't an analog advantage.
题目解析
The correct answer is D: When adjusting circuits for maximum or minimum values. An analog multimeter is preferred to a digital multimeter when adjusting circuits for maximum or minimum values. Analog meters show trends and peaks/valleys better than digital meters, which just show numbers. For amateur radio operators, this makes analog meters useful for tuning. Understanding this helps when selecting test equipment.
考试技巧
Analog multimeter preferred = when adjusting for maximum/minimum values. Think 'A'nalog 'M'ultimeter = 'A'djusting for 'M'aximum/minimum. Analog meters show trends and peaks/valleys better than digital meters. Not logic circuits, not precision, not frequency - just maximum/minimum adjustment.
记忆口诀
Analog multimeter preferred = when adjusting for maximum/minimum values. Think 'A'nalog 'M'ultimeter = 'A'djusting for 'M'aximum/minimum. Analog meters show trends and peaks/valleys better than digital meters. Useful for tuning circuits.
实际应用示例
You're tuning a circuit for maximum output. An analog meter's needle moves smoothly, making it easy to see when you reach the peak. A digital meter just shows numbers changing, making it harder to find the exact peak. Analog meters are better for finding maximum or minimum values.
错误选项分析
Option A: Incorrect. Analog meters aren't better for testing logic circuits - digital meters are better for digital circuits. Logic circuit testing isn't an analog advantage. Option B: Incorrect. Analog meters don't provide high precision - digital meters have higher precision. Precision isn't an analog advantage. Option C: Incorrect. Analog meters don't measure oscillator frequency - frequency counters are used for that. Frequency measurement isn't an analog advantage.
知识点
Analog multimeter, Maximum/minimum values, Circuit adjustment, Tuning
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.