Liquid Crystal Display or LCD objective questions and answers
31. The LCD digital display that is based on
A.Radiation of light
B.Reflection of light
C.Emission of light
D.Transmission of light
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B.Reflection of light
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32. The typical value of thickness of liquid layer of LCD's is ...... mm
A.0.22
B.2.2
C.0.025
D.0.035
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33. Which of the following liquid crystal layers are used in LCD's
A.Heavy water
B.Nematic
C.Hydrosulphuric acid
D.Hydrochloric acid
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34. The contrast of liquid crystal display (LCD)
A.Will increase if the back plate is more reflective
B.Will decrease if the back plate is more reflective
C.Will increase if the back plate is less reflective
D.Will decrease if the back plate is less reflective
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35. Which of the following consumes less power?
A.Incandescent lamp
B.LCD
C.Fluorescent tube
D.LED
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