List of top Electronics and Communication Engineering Questions on communication systems asked in TS PGECET

Which of the following is not correct if the intermediate frequency is too high?

The problem of reducing the gain of receiver for weak signals is avoided by

In communication receivers, the filter used to reduce receiver gain at some specific frequency is

The Foster-Seeley discriminator along with amplitude limiter is called

A four level PAM has a input data rate of \(2400~bits/s\) then the symbol rate is

Match the following: A: ASK, B: APK, C: PSK, D: FSK

A TDM system is used to multiplex four independent voice signals each sampled at the rate of 8 kHz using PAM. The system incorporates a synchronizing pulse train for its proper operation. Calculate the transmission bandwidth?

What are the conditions for distortion less transmission through a system?

A random process is stationary

The following are properties of auto correlation except

A receiver connected to an antenna whose resistance is \(50~\Omega\) has an equivalent noise resistance of \(30~\Omega\). Calculate the receiver's noise figure?

To develop the time-domain description of SSB modulation, the required mathematical tool is known as

In the transmission of television signals in practice, a controlled amount of carrier is added to the VSB modulated signal. This is done to use

Prior to sampling, the type of filter used to attenuate high frequency components of the signal that lie outside the band of interest is

Which of the following is used to correct the aperture effect due to flat-top sampling in the sample-and-hold circuit of PAM demodulation?

A FDM system is used to multiplex 24 independent voice signals. SSB modulation is used for the transmission. Given that each voice signal is allotted a bandwidth of 4 kHz, calculate the overall transmission bandwidth of the channel?