MCQOPTIONS
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| 1. |
Colour picture tube needs higher anode voltage and needs larger beam and cathode currents than monochrome tube because |
| A. | it is bigger in size |
| B. | it has higher level of illumination |
| C. | the tube has to illuminate three phosphors simultaneously |
| D. | the tube has lower efficiency because of aperture mask |
| Answer» E. | |