Communication S...

The type of communication system needed for a given signal depends on which of the following?

Any device that converts one form of energy into another is called:

Which of the following is the reason for signal distortion in a communication system?

Which of the following device is not a part of detector system of amplitude modulated wave?

The largest distance between a source and a destination up to which the signal is received with sufficient strength is called:

The essential element(s) of any communication system is/are:

Find the size of the antenna required to transmit an electromagnetic signal of frequency 2 MHz.

A repeater in a communication system consists of:

A message signal of frequency 20 kHz is modulated by a carrier wave of frequency 3 MHz. Find the side bands produced.

Optical communication using fibers is performed in the frequency range of:

If the wavelength of a signal is \(\lambda\), then the effective power radiated by the antenna will be:

What is the possible bandwidth allocated to a TV signal?

If the the amplitude of the modulating signal is greater than the amplitude of the carrier wave, then what will happen with the modulated signal?

Telephone call is an example of:

If the frequency of the side bands of a modulated signal are 1020 kHz and 980 kHz, then find the frequency of the carrier wave.

Two different electromagnetic signals of frequency 4 MHZ and 6 MHz are transmitted one by one by an antenna. Find the ratio of the effective power radiated for the frequency 4 MHz to the effective power radiated for the frequency 6 MHz.

Which of the following statement is correct for modulation?

If the size of an antenna is 100 m, then which of the following statement is correct?

What is the full form of ITU?

Which of the following is the commonly used transmission media in communication systems?

The process in which the low frequency message signal is superimposed on a high frequency wave is called:

Which of the following is the function of any receiver in the communication system?

The peak voltage of a message signal and the carrier wave are 15 volts and 30 volts respectively. Find the modulation index.

Which of the following process is used for the retrieval of information from the carrier wave at the receiver?

Which type of signals can be transmitted by the antenna:

Which of the following is(are) the significant characteristic(s) of a pulse?

Which of the following is correct for the broadcast mode of communication?

If \(c(t)=A_{c} \sin \left(\omega_{c} t\right)\) represent carrier wave and \(m(t)=A_{m} \sin \left(\omega_{m} t\right)\) represent message signal, then the modulated signal is represented as:

What is the range of communication through free space using radio waves?

Which of the following is the function of any transmitter in the communication system?