Explanation: Sweep generator provides a periodic voltage waveform in an oscilloscope. As the waveform resembles the teeth of a hacksaw it is known as a sawtooth waveform.

Explanation: 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.

Explanation: When the sweep frequency and the signal frequency are same or integral multiple of each other, visible spot is displayed on the screen of the cathode ray oscilloscope.

Explanation: The trace is made stationary by synchronising the sawtooth voltage with the magnitude of the signal that is applied to the vertical input.

Explanation: Many cycles are present on the screen when the sweep frequency is lower than the signal frequency. Only a single cycle appears on the screen when the sweep and signal frequencies are equal.

Explanation: Application of a sinusoidal voltage to the y terminal and the internally produced sawtooth voltage to the x terminal results in the shifting of the sawtooth voltage in terms of magnitude. Finally a sinusoidal waveform is observed on the screen.

Explanation: During the flyback period, voltage suddenly drops to zero from a certain value.

Explanation: The electron beam moves linearly along the horizontal direction during the trace time. The voltage Vx increases linearly with respect to time Tr during the instant of the trace period.

Explanation: When the magnitude of the applied voltage reduces to zero, the light produced on the screen due to the bombardment of electrons does not disappear immediately and reduces in terms of intensity slowly.