Q.1.
Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation.
Q.2.
Full duplex operation permits transmission in both directions at the same time.
Q.3.
In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then
Q.4.
The modulation index of an FM is changed from 0 toHow does the transmitted power change?
Q.5.
For a given carrier wave, maximum undistorted power is transmitted when value of modulation is
Q.6.
In TV systems, equalising pulses are sent during
Q.7.
For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as
Q.8.
In Modulation, “carrier” is
Q.9.
If in a broadcasting studio, akHz carrier is modulated by an audio signal of frequency range 100-kHz, the width of channel is __________ kHz.
Q.10.
Which one of the following is analog?
Q.11.
For AM receivers the standard IF frequency is
Q.12.
FM transmitting and receiving equipment as compared to AM equipment is
Q.13.
Leak type bias is used in plate modulated class C amplifier to
Q.14.
Fourier analysis indicate that a square wave can be represented as