All objects displayed on-screen must have previously been amplified by the Video Amplifier, thus Answer D. is the right answer.

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A Resolver is a circuit that converts a mechanical position into an electrical signal. In a RADAR system a Resolver translates the antenna's rotational position in degrees into an electrical signal that the RADAR uses to "know" where the antenna is pointing at.

The antenn's rotational position is itself not rendered on the display screen, thus it is not an input to the video aplifier. Only elements A., B. and D. are rendered on-screen.

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The CRT's Deflection Coils deflect the electron beam so it sweeps the CRT's display area from left to right and top to bottom.

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The CRT's Deflection Coils deflect the electron beam so it sweeps the CRT's display area from left to right and top to bottom.

One coil deflects the beam horizontally while another coil deflects the bam vertically, so there are 2 deflection coils.

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Hint: “sweep” appears in both the question and the correct answer. Generators can drive electronic devices.

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Composite video is a video signal containing information on all three colors: Red, green and blue.

The video signal is fed to the CRT - Cathode-Ray Tube's cathode by the video amplifier.

The CRT has an aluminum mesh a very short distance from the phosphor layer coating the inside of the display area that separates the electrons coming from the electron gun (cathode) so only the "red" electrons hit the red phosphor, the "green" electrons hit the green phosphor and the "blue" electrons hit the and the blue phosphor.

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