Q. DVD uses

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Q. Fourier analysis indicate that a square wave can be represented as

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Q. The characteristic impedance of a twin wire feeder used for TV signals is about

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Q. In a FM receiver, amplitude limiter

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Q. A buffer amplifier is

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Q. Leak type bias is used in plate modulated class C amplifier to

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Q. The direction of rotation of a CD is

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Q. Which of the following is not considered as a useful quantity in comparing noise performance of receivers?

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Q. Oscillator crystal is made of

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Q. An FM signal has modulating frequency fm and maximum frequency deviation of δ. The bandwidth will be nearly equal to

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Q. In a cellular communication system, path loss between transmitter and receiver is due to

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Q. Full duplex operation-permits transmission in both directions at the same time.

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Q. In a TV receiver antenna the length of reflector rod

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Q. The modulation index of an FM is changed from 0 to 1. How does the transmitted power change?

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Q. For AM receivers the standard IF frequency is

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Q. For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as

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Q. In TV systems, equalising pulses are sent during

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Q. A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is

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Q. The main function of a balanced modulator is to

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Q. FM transmitting and receiving equipment as compared to AM equipment is

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