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Electronics and Communication Communication Systems Difficulty: Medium

Which of the following devices can be used as low power oscillator only? Which one of the following logical operations is performed by the digital circuit shown below? Fibers have numerical aperture (NA) in the region of 0.15 to 0.4. Fibers with higher N.A. values generally exhibit Lissajous pattern shown in double-beam cathode-ray oscilloscope screen for two sinusoidal voltages of equal magnitude and of the same frequency but of phase shift of 30° electrical is Given a range of frequencies, which of the following system is best for transmission line load matching?