Digital Circuits Liquid Crystal Displays Online Exam Quiz
Digital Circuits Liquid Crystal Displays GK Quiz. Question and Answers related to Digital Circuits Liquid Crystal Displays. MCQ (Multiple Choice Questions with answers about Digital Circuits Liquid Crystal Displays
LCDs operate from a frequency ranges from ___________
Options
A : 10Hz to 60Hz
B : 50Hz to 70Hz
C : 30Hz to 60Hz
D : None of the Mentioned
The first LCDs became commercially available in ___________
Options
A : 1950s
B : 1980s
C : 1960s
D : 1970s
LCDs operate from a voltage ranges from ___________
Options
A : 3 to 15V
B : 10 to 15V
C : 10V
D : 5V
In 7 segment display, how many LEDs are used?
Options
A : 8
B : 7
C : 10
D : 9
The optical properties of liquid crystals depend on the direction of ___________
Options
A : Air
B : Solid
C : Light
D : Water
Electro-optical effect is produced in ___________
Options
A : LED
B : LCD
C : OFC
D : OLED
The full form of LCD is ____________
Options
A : Liquid Crystal Display
B : Liquid Crystalline Display
C : Logical Crystal Display
D : Logical Crystalline Display
By which properties, the orientation of molecules in a layer of liquid crystals can be changed?
Options
A : Magnetic field
B : Electric field
C : Electromagnetic field
D : Gallois field
What is the backplane in LCD?
Options
A : The ac voltage applied between segment and a common element
B : The dc voltage applied between segment and a common element
C : The amount of power consumed
D : For adjusting the intensity of the LCD
The direction of electric field in an LCD is determined by ___________
Options
A : the molecule’s chemical structure
B : Crystalline surface structure
C : Molecular Orbital Theory
D : Quantum Cellular Automata
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