What item of test equipment contains horizontal and vertical channel amplifiers?
The correct answer is D: An oscilloscope. The test equipment that contains horizontal and vertical channel amplifiers is an oscilloscope. Oscilloscopes have amplifiers for both horizontal (X-axis, time) and vertical (Y-axis, voltage) channels to display waveforms. For amateur radio operators, oscilloscopes are essential for viewing waveforms. Understanding this helps when selecting test equipment.
Exam Tip
Horizontal and vertical channel amplifiers = oscilloscope. Think 'O'scilloscope = 'O'scillates (displays) waveforms with 'H'orizontal and 'V'ertical amplifiers. Oscilloscopes have amplifiers for both X (time) and Y (voltage) axes. Not ohmmeter, signal generator, or ammeter - just oscilloscope.
Memory Aid
"Horizontal and vertical channel amplifiers = oscilloscope. Think 'O'scilloscope = 'O'scillates with 'H'orizontal and 'V'ertical amplifiers. Oscilloscopes have amplifiers for both X (time) and Y (voltage) axes. Essential for waveform display."
Real-World Application
You use an oscilloscope to view a waveform. The oscilloscope has horizontal channel amplifiers (for time base/X-axis) and vertical channel amplifiers (for voltage/Y-axis) to display the waveform on the screen. This is what makes oscilloscopes useful for viewing signals - they can display voltage versus time.
Key Concepts
Why Other Options Are Wrong
Option A (Ohmmeter): Incorrect. Ohmmeters measure resistance, they don't have horizontal and vertical channel amplifiers. They're simple resistance meters.
Option B (Signal generator): Incorrect. Signal generators produce signals, they don't have horizontal and vertical channel amplifiers. They're signal sources, not display devices.
Option C (Ammeter): Incorrect. Ammeters measure current, they don't have horizontal and vertical channel amplifiers. They're simple current meters.
题目解析
The correct answer is D: An oscilloscope. The test equipment that contains horizontal and vertical channel amplifiers is an oscilloscope. Oscilloscopes have amplifiers for both horizontal (X-axis, time) and vertical (Y-axis, voltage) channels to display waveforms. For amateur radio operators, oscilloscopes are essential for viewing waveforms. Understanding this helps when selecting test equipment.
考试技巧
Horizontal and vertical channel amplifiers = oscilloscope. Think 'O'scilloscope = 'O'scillates (displays) waveforms with 'H'orizontal and 'V'ertical amplifiers. Oscilloscopes have amplifiers for both X (time) and Y (voltage) axes. Not ohmmeter, signal generator, or ammeter - just oscilloscope.
记忆口诀
Horizontal and vertical channel amplifiers = oscilloscope. Think 'O'scilloscope = 'O'scillates with 'H'orizontal and 'V'ertical amplifiers. Oscilloscopes have amplifiers for both X (time) and Y (voltage) axes. Essential for waveform display.
实际应用示例
You use an oscilloscope to view a waveform. The oscilloscope has horizontal channel amplifiers (for time base/X-axis) and vertical channel amplifiers (for voltage/Y-axis) to display the waveform on the screen. This is what makes oscilloscopes useful for viewing signals - they can display voltage versus time.
错误选项分析
Option A (Ohmmeter): Incorrect. Ohmmeters measure resistance, they don't have horizontal and vertical channel amplifiers. They're simple resistance meters. Option B (Signal generator): Incorrect. Signal generators produce signals, they don't have horizontal and vertical channel amplifiers. They're signal sources, not display devices. Option C (Ammeter): Incorrect. Ammeters measure current, they don't have horizontal and vertical channel amplifiers. They're simple current meters.
知识点
Oscilloscope, Horizontal channel, Vertical channel, Amplifiers
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.