This set of Audio Video Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Three Dimensional Television (3D)”.
1. In 3D television depth of the image is not present.
a) True
b) False
View Answer
Explanation: The above statement is false. Normal TVs are two dimensional means they lack the depth of the image. In 3D TV depth is also included and the picture looks like a live scene. For example, the football may appear as if it is coming out of the screen when it was kicked or a train coming out at full speed.
2. What is the resolution of 3D TV?
a) 1024 × 768
b) 1080 × 1024
c) 720 × 420
d) 1024 × 360
View Answer
Explanation: There are many contributions made in the field of 3D TV. A 3D TV has very high resolution display. Our 3D display provides horizontal parallax with 16 independent perspective views at 1024 × 768 resolutions. A 3D TV has a fully distributed architecture for acquisition, compression, transmission and image display.
3. In which of the following system we see a different image of the same object with each eye?
a) Motion parallax
b) Binocular parallax
c) Monocular parallax
d) Polarized parallax
View Answer
Explanation: Two of the most important systems in 3D TV are Binocular parallax and motion parallax. Binocular parallax means seeing the different image of the same object with each eye, whereas motion parallax means seeing the different images of an object when moving ahead.
4. What is the total bandwidth required in 3D TV transmission?
a) 20 to 30 MHz
b) 16 to 18 MHz
c) 2 to 4 MHz
d) 12 to 14 MHz
View Answer
Explanation: For capturing the scene in 3D TV, two or more cameras are placed like different eyes of the person and the signal is captured. The 3D picture transmission is always accompanied by stereo sound. A total bandwidth of 12 to 14 MHz is required for 3D transmission as compared to 6 to 7 MHz for a normal TV transmission.
5. In which 3D display technique is the blue beam cut-off and is not produced?
a) Anaglyphic
b) Polarization
c) ABDY
d) Active matrix
View Answer
Explanation: The first 3D display that developed was Anaglyphic 3D (with passive red green glasses). The blue beam is cutoff and is not produced. In Anaglyphic 3D technique the user can’t see the pictures in natural colors.
6. Which 3D display technique requires electrical and mechanical adjustments?
a) Active matrix
b) ABDY
c) Polarization
d) Anaglyphic
View Answer
Explanation: Polarization 3D (with passive polarized glasses i.e. VDUS) was developed to enable viewing of pictures in all natural colors. This employs two Visual Display Units (VDUS). One unit is applied with right channel RGB and other with left channel RGB. Polarization 3D method is very complicated which requires electrical and mechanical adjustments.
7. By how much time is the red information delayed by additional circuits in signal paths as compared to green and blue information in the ABDY 3D display technique?
a) 50 ns
b) 600 ns
c) 500 ns
d) 725 ns
View Answer
Explanation: Due to the complexity of polarization 3D, ABDY 3D was developed by West Germany and here the red information is delayed by about 600 ns by additional circuits in the signal path, as compared to the green and blue information. This system is named ABDY 3D as the ABDY Company of West Germany patented it.
8. Which type of glass does a 3D TV use?
a) LED shutter viewing
b) SAMOLED shutter viewing
c) OLED shutter viewing
d) LCD shutter viewing
View Answer
Explanation: Nowadays, 3D TVs are readily available in market, which can operate in 3D mode which special classes in addition to regular 2D mode. This type of TVs use LCD shutter viewing glasses in which the TV through sensors tells the glasses which eye should be seeing the image for the moment creating illusion of the 3D image.
9. Which visual process does the 3D TV technology use?
a) Stereopsis
b) Anaglyphic
c) Polarization
d) ABDY
View Answer
Explanation: A 3D system is dependent on a visual process of STEREOPSIS enabling 3D perception which is the result of the fact that our human eyes are separated by distances of 2.5 inch (= 6.5 cm) allowing the eyes to see at slightly different angles. This has combined effect on the viewer’s mind creating three dimensional pictures.
10. Everything appears double, distorted and sometimes unwatchable when one does not wear special glasses while watching 3D TV.
a) True
b) False
View Answer
Explanation: Old 3D Technology had to use two color signals in different ways to form a false image. Pair of glasses having Red and Green lenses was used to combine these images to appear as 3D. It is compulsory for everyone watching 3D TV to use special glasses to see the 3D effect. Without the glasses everything on TV appears double, distorted and in most cases unwatchable.
Sanfoundry Global Education & Learning Series – Audio Video Engineering.
To practice all areas of Audio Video Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
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