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Electronics and Communication Communication Systems Difficulty: Medium

An automotive radar operates at a frequency of 8 GHz. The Doppler shift due to an automobile directly approaching the radar at a speed of 160 km per hour is What is the value of C such that equivalent capacitance across x-y is 5F. An Ideal power limited communication channel with additive white Gaussian noise with 1 MHz band width and Signal to Noise ratio of 15 is transmitting the information at theoretical maximum rate. If the Signal to Noise ratio is reduced to 7, how much bandwidth is required to maintain same rate: Coherent radiation in LASER is caused by A 1 m length wire has a resistance of 150 Ω. When it is subjected to strain, its length becomes 1.01 m. The measurement is conducted by a strain gauge whose gauge factor is 2. The change in resistance of the wire is