Q. Which of the following is used to vary the frequency of the carrier frequency in accordance with the baseband signal amplitude variations in direct method of FM generation?

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Q. Frequency demodulator is a frequency to amplitude converter circuit.

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Q. Which of the following is not a technique for FM demodulation?

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Q. Which of the following FM demodulator is sometimes known as pulse averaging discriminator?

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Q. PLL in FM detection stands for ______

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Q. In angle modulation, signal to noise ratio before detection is a function of ______

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Q. FM can improve the receiver performance through adjustment of transmitted power.

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Q. Modern mobile communication systems use analog modulation techniques.

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Q. Which of the following is not an advantage of digital modulation?

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Q. A desirable modulation scheme provides _________ bit error rates at __________ received signal to noise ratios.

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Q. The performance of modulation scheme is not measured in terms of __________

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Q. In digital communication system, in order to increase noise immunity, it is necessary to increase _________

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Q. Which of the following is the ratio of signal energy per bit to noise power spectral density?

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Q. Increasing the data rate implies the increase in pulse width of digital symbol.

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Q. Which of the following is the ratio of the throughput data rate per Hertz?

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Q. Which of the following is defined as the range of frequencies over which the signal has a non zero power spectral density?

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Q. _______ is equal to width of main spectral lobe.

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Q. Half power bandwidth is also called ______

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Q. Intersymbol interference (ISI) leads to ________ probability of the receiver for making an error in detecting the symbols.

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Q. ISI is ________ by increasing channel bandwidth.

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