Television Display Systems » Exercise – 1
1. A TV set specified as 50 cm size has the screen whose width is :
(a) 30 cm
(b) 40 cm
(c) 50 cm
(d) 60 cm
2. Pincushion effect in a colour picture tube can be corrected by :
(a) Magnetic ring
(b) Current through deflection coils
(c) Colour purity adjustments
(d) Currents through convergence coils
3. The television picture tube has :
(a) Magnetic focus and electrostatic deflection
(b) Magnetic focus and magnetic deflection
(c) Electrostatic focus and electrostatic deflection
(d) Electrostatic focus and magnetic deflection
4. LCD displays more commonly employ :
(a) Nematic crystal
(b) Sematic crystals
(c) Cholesteric crystal
(d) Twisted Nematic crystals
5. The number of guns in a colour picture tube are :
(a) 2
(b) 4
(c) 3
(d) 5
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