Q. In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then

View solution

Q. If sampling is done at the rate of 10 kHz. The bandwidth required is

View solution

Q. It is found that a ship to ship communication suffers from fading. This can be avoided by using

View solution

Q. Skip distance depends on time of day and angle of incidence.

View solution

Q. In practical commercial FM system, channel bandwidth is

View solution

Q. In EM waves, polarization

View solution

Q. The maximum power output of a standard A earth station over the total band allocated to satellite communication is about

View solution

Q. PAM stands for

View solution

Q. Which of the following is an indirect way of generating FM?

View solution

Q. When the length of antenna is a whole wavelength

View solution

Q. Circular polarization

View solution

Q. An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.

View solution

Q. If S represents the carrier synchronization at the receiver and ρ represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is

View solution

Q. For telegraphy the most commonly used modulation system is

View solution

Q. Commercial Frequency deviation of FM is

View solution

Q. The colour of an object is decided by

View solution

Q. In Pulse Code Modulation system

View solution

Q. Human ear can detect sound intensities of the order of

View solution

Q. If output power of a radio receiver is doubled, its volume is increased by __________ dB.

View solution

Q. Which of the following statements is correct?

View solution