Q. Armoured submarine cable is used

View solution

Q. The frequency deviation of a FM signal produced from PM is

View solution

Q. Good frequency stability can be available

View solution

Q. Assertion (A): The unit of telephone traffic measurement is erlang.

Reason (R): International circuits for communication are fitted with echo suppressors.

View solution

Q. The primary colours are

View solution

Q. The most commonly used system of modulating for telegraphy is

View solution

Q. Which of the following antennas is not wide band?

View solution

Q. In phase shift keying the input signal is

View solution

Q. A circuit which cannot demodulate SSB is

View solution

Q. In TV system in India IF video and IF audio frequencies are

View solution

Q. While AM has __________ frequencies, FM has __________ number of sidebands.

View solution

Q. In VHS format diameter of head drum is about

View solution

Q. The correct sequence of subsystem in an FM receiver is

View solution

Q. A wave is frequency modulated with an index of 0.1 and its frequency is multiplied by 8 times, the modulation index is

View solution

Q. Short circuited stubs are preferred to O.C stubs because

View solution

Q. Assertion (A): In FM all power amplifiers can be operated in class C

Reason (R): FM is a constant amplitude modulation system.

View solution

Q. In radar system which of the following is called A scope

View solution

Q. In a CD the channel separation is

View solution

Q. The unit for luminous energy is

View solution

Q. The IF bandwidth of a radar receiver is inversely proportional to

View solution