This set of Video Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Plasma Television Screens”.
1. Which state of matter is used in plasma TV?
a) First
b) Second
c) Third
d) Fourth
View Answer
Explanation: The plasma screen displays pictures from video signal. In order to display this picture it relies on the fourth state of matter that is plasma. It is made up of thin plates of glass stuck to one another. Pictures are created in thin plates. It all begins with an incoming video signal through a video cable.
2. More than 1 billion electrical impulses are sent to the plasma module every second in plasma TV.
a) True
b) False
View Answer
Explanation: The above statement is false. More than two billion electrical impulses are sent to the plasma module every second in plasma TV. The modules are the two glass plates covered with transparent electrodes. In order to transform these electrode impulses to picture made of colored light, plasma is used.
3. Using which colors different colors are produced when UV rays hit the phosphorous present in the sub pixels of plasma display television?
a) Yellow, blue and pink
b) Purple, white and red
c) Orange, black and green
d) Red, green and blue
View Answer
Explanation: In the working of plasma display television, the bottom of the sub-pixel is coated with phosphorous, a substance which gives out light when excited by UV rays. These UV rays are produced with the help of plasma. When these UV rays hit the phosphorous present in the sub pixels different colors are produced using the basic colors: blue, green and red.
4. Plasma television screens cannot be used in higher altitudes.
a) True
b) False
View Answer
Explanation: As plasma television screens have a short life span and it is fragile it cannot be used in higher altitudes. The pressure difference between the gas and the air may cause a temporary damage or buzzing/humming noise.
Sanfoundry Global Education & Learning Series – Video Engineering.
To practice all areas of Video Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
