超星 - L11-句子词汇 - 查题吧

单选题

An oscilloscope is easily the most useful instrument available for testing circuits because it allows you to see the signals at different points in the circuit.

A. 万用表
B. 示波器
C. 测试电路
D. 仪器

单选题

The best way of investigating an electronic system is to monitor signals at the input and output of each system block, to check that each block is operating as expected and is correctly linked to the next .

A. 监视
B. 模块
C. 预期
D. 调查

单选题

An oscilloscope to display a voltage – time ( V/t ) graph , a graph of voltage against time. Voltage on the vertical or Y-axis, and time on the horizontal or X-axis.

A. 曲线图
B. 电压-时间
C. 垂直或Y轴
D. 水平或X轴

单选题

Turn the POWER on. Apply a signal to the input terminal. Set the INTENSITY and FOCUS controls correctly, the spot will be reasonably bright, and as sharply focused as possible .

A. 电源开关
B. 亮度
C. 焦距
D. 亮点

单选题

The TIME/DIV control determines the horizontal scale of the graph which appears on the oscilloscope screen.The VOLTS/DIV control determines the vertical scale of the graph drawn on the oscilloscope screen. The Y-POS allows you to move the spot up and down the screen.

A. 电压/每格
B. 时间/每格
C. 比例
D. 垂直位置

单选题

When a sinusoidal signal is applied, you will obtain a clear and stable sine waveform trace on the screen.

A. 正弦波形
B. 正弦信号
C. 屏幕
D. 踪迹

单选题

Amplitude, peak-peak voltage , time period can be measured from the graph.

A. 测量
B. 幅值
C. 峰-峰值电压
D. 时间周期

单选题

A function generator is electronic test equipment used to generate electrical waveforms . Function generators are typically used in electronics repair and design, where they are used as a signal source to test a circuit.

A. 测试设备
B. 信号源
C. 函数发生器
D. 电气波形

单选题

These waveforms are sine, square, or triangle .

A. 波形
B. 三角形
C. 正弦
D. 正方形

单选题

By clicking in the 1k FREQUENCY RANGE button, selecting a sine wave signal and setting the ATTENUATOR switch to 0 dB, the generator outputs a 1kHz sine waveform.

A. 按钮
B. 正弦波信号
C. 频率范围
D. 衰减器开关

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