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Visible spot must be moved in _______

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in Electrical Measurements by (148k points)
Visible spot must be moved in _______

(a) two directions

(b) one direction

(c) three directions

(d) four directions

The question was asked at a job interview.

My doubt stems from Basic Principle of Signal Display topic in portion Oscilloscopes of Electrical Measurements

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Best answer
Right choice is (b) one direction

The best I can explain: Sweep voltage must be brought to zero once it reaches its maximum value. The visible spot must be moved in a single direction only. Return sweep will trace back the signal in a reverse direction.

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