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Electronics and Communication Microwave Communication Difficulty: Medium

Which of the following is not backward compatible with Cdma2000? To prevent oscillations in the TWT which one of the following is resorted to? Consider the following statements for a.c. series motors: 1. The rotor is designed so that its R/X ratio is small. 2. dT/dω < 0 where T and ω are torque and speed respectively. 3. The reference and control voltages should be in phase quadrature, but their magnitudes need not be equal. Which of the statement given above are correct? Unit of density is About the Fourier series expansion of a periodic function it can be said that