Communication Systems - Study Mode

[#171] If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz.
Correct Answer

(D) 10

[#172] In Modulation, “carrier” is
Correct Answer

(D) Voltage for which frequency, phase or amplitude is varied

[#173] For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as
Correct Answer

(C) 4E

[#174] A cordless telephone using separate frequencies for transmission in base and portable units is known as
Correct Answer

(A) Duplex arrangement

[#175] In TV systems, equalising pulses are sent during
Correct Answer

(A) Horizontal blanking