Question

In an oscilloscope screen, linear sweep is applied at the

• A. vertical axis
• B. horizontal axis
• C. origin
• D. both horizontal and vertical axis

Answer 1

The correct option is B horizontal axis

A CRO uses a horizontal input voltage which is an internally generated ramp voltage (i.e. linear sweep voltage) called "Time Base of CRO". An oscilloscope is used to display a waveform which varies as a function of time. To reproduce the waveform accurately, the beam must have a constant horizontal velocity i.e. the deflecting voltage must increase linearly with time. This voltage is called a ramp voltage. Thus, a sawtooth waveform also called linear sweep voltage is applied to the horizontal deflecting system (or horizontal axis) which provides a time base to CRO.