Q. An FM signal is a ______ envelope signal.

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Q. FM uses class______ amplifiers and AM uses class ______ amplifiers.

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Q. AM exhibits capture effect characteristics.

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Q. Which of the following is a drawback of FM systems?

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Q. Carrier signal in modulation technique is _______ signal.

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Q. Modulation index of an AM signal is ratio of __________ to the _______

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Q. If the peak message signal amplitude is half the peak amplitude of the carrier signal, the signal is _____ modulated.

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Q. A percentage of modulation greater than ___________ will distort the message signal.

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Q. The RF bandwidth of AM is ____________ the maximum frequency contained in the modulating message signal.

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Q. Single sideband AM systems occupy same bandwidth as of conventional AM systems.

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Q. How is the performance of SSB AM systems in fading channels?

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Q. Which of the following is a disadvantage of tone-in-band SSB system?

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Q. FFSR in AM systems stands for ________

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Q. AM demodulation technique can be divided into _____ and _____ demodulation.

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Q. Non coherent detection requires the knowledge of transmitted carrier frequency and phase at the receiver.

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Q. A product detector in AM systems is also called ___________

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Q. AM system use only product detector for demodulation. They never use envelope detectors.

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Q. FM is a part of general class of modulation known as ______

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Q. FM is called constant envelope because ______ of carrier wave is kept constant.

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Q. Which of the following are two most important classes of angle modulation?

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