5-Minute Tech Quiz
1. AC3 is another name for Dolby Digital.
a. True
b. False
2. Which speaker is primarily used for dialog?
a. Center
b. Tweeter
c. Subwoofer
d. None of the above
3. Which speaker primarily delivers the low bass frequencies?
a. Center
b. Tweeter
c. Subwoofer
d. None of the above
4. Which speaker primarily delivers the high frequencies?
a. Center
b. Tweeter
c. Subwoofer
d. None of the above
5. Active speakers include their own amplifier.
a. True
b. False
6. A video scan technique where the odd lines are scanned first and then the even lines is called:
a. letterbox.
b. interlaced.
c. progressive.
d. All of the above
e. None of the above
7. Generally speaking, the bandwidth of human hearing is 20 to 20,000 Hz.
a. True
b. False
8. All analog television sets will require a converter when broadcasters switch to digital broadcasting.
a. True
b. False
9. When will full power broadcast television stations stop broadcasting analog and switch to digital only?
a. December 2008
b. February 2009
c. December 2009
d. January 2010
10. An S-video cable contains both video and audio signals.
a. True
b. False
11. A process that horizontally condenses a 16:9 image into a 4:3 space is called:
a. anamorphic.
b. diffusion.
c. letterbox.
d. All of the above
e. None of the above
12. The aspect ratio for a widescreen image is 16:9.
a. True
b. False
13. When running home theater cables, you should keep them away from electrical cables and machinery.
a. True
b. False
14. You can use the same type of speaker cable regardless of location.
a. True
b. False
15. Which of the following connection techniques provides the highest quality video?
a. Component
b. DVI/HDMI
c. RF
d. All of the above
e. None of the above
5-Minute Tech Quiz Answers
1. a
2. a — The center speaker is used primarily for dialog and some on-screen sounds and should be mounted centered directly above or below the screen.
3. c — The subwoofer is designed to deliver low frequency sounds and may be powered or not powered.
4. b
5. a
6. b — The odd and even fields are aligned so that the human eye sees them as one image.
7. a
8. b — Some satellite and cable customers will not require converter boxes. Those receiving their broadcast television signals directly from an over-the-air antenna will need a converter box.
9. b
10. b — The S-video cable contains only the video signals. Another cable must be used for audio information.
11. a
12. a
13. a — Home theater cables can be susceptible to electrical noise and induction if run too closely to electrical cables or electrical devices, such as motors and fluorescent ballasts.
14. b — The length of the cable run determines the AWG size of the cable, and the environment where it is run determines if a special cable type, such as plenum or outdoor, should be used.
15. b — Of the video types listed, RF provides the lowest quality and DVI/HDMI provides the highest.
