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| 1 | |
A nonlinear circuit that heterodynes the two IFs and generates the sum and difference frequencies is the |
| | A) | sound modulator |
| | B) | sound detector |
| | C) | sound multiplexer |
| | D) | sound synchronizer |
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| 2 | |
A color cathode-ray tube is coated with |
| | A) | red, yellow, and blue phosphor dots or stripes |
| | B) | red, violet, and green phosphor dots or stripes |
| | C) | red, green, and blue phosphor dots or stripes |
| | D) | red, green, and yellow phosphor dots or stripes |
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| 3 | |
Which of the following is not a new display method recently brought to market? |
| | A) | liquid-crystal display |
| | B) | monochrome display |
| | C) | plasma |
| | D) | projection |
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| 4 | |
Which of the following is a system of delivering the TV signal to home receivers by way of a coaxial cable? |
| | A) | cable TV |
| | B) | satellite TV |
| | C) | VHF antenna |
| | D) | UHF antenna |
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| 5 | |
The spacing between nonbroadcast TV channels as set up by the cable TV industry is |
| | A) | 6 Hz |
| | B) | 6 KHz |
| | C) | 6 MHz |
| | D) | 6 GHz |
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| 6 | |
Which of the following is not a primary benefit of digital cable? |
| | A) | more channels can be carried |
| | B) | less bandwidth required |
| | C) | picture quality is better |
| | D) | will continue to support older analog TV system |
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| 7 | |
The path from earth to a satellite is called the |
| | A) | uplink |
| | B) | downlink |
| | C) | VoIP |
| | D) | angle of propagation |
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| 8 | |
Direct broadcast satellite TV systems create a signal that can be received by a satellite dish with as small as |
| | A) | a 12-in diameter |
| | B) | a 5-ft diameter |
| | C) | a 12-ft diameter |
| | D) | an 18-in diameter |
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| 9 | |
HDTV uses |
| | A) | interlace scanning |
| | B) | horizontal sync scanning |
| | C) | progressive line scanning |
| | D) | digital loop scanning |
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| 10 | |
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In the block diagram illustrated above, which block adjusts the signal to correct for amplitude and phase variations encountered during transmission? |
| | A) | clock recovery |
| | B) | NTSC filter |
| | C) | equalizer |
| | D) | Reed-Solomon error correction |
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