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A carbon electrode projector produces the best possible light, a pure white with an even brightness. Ques.3. Proofreading Lambert’s Cosine Law download DELED MCQs Questions With Answers pdf Free File. Illumination Level LED and switch interfacing with 8051 – Including switch debouncing: LCD interfacing with 8051 – 8-bit, 4-bit mode, and with 8255 PPI: LED interfacing with 8051 – Direct and with 8255: Interfacing of 8051 with 8255 Programmable Peripheral Interface: Interfacing 8051 with … The carbon arc lamp was mainly used in the cinema projector. Collection Of DELED Course Multiple choice Questions with Answer. This set of Optical Communications Multiple Choice Questions & Answers (MCQs) focuses on “LED Characteristics”. 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