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Which of the following phase modulation applications is INCORRECT?
In the phase modulated signal, the deviation of frequency is ________.
Phase modulation is generally not used for transmission because
In which of the following, the phase of the carrier wave changes in accordance with the intensity of light.
An angle modulated signal with carrier frequency ω_{c} = 2π × 10^{6} rad/s given by ϕ_{m}(t) = cos(ω_{c}t + 5 sin (1000πt) + 10 sin (2000πt)). The maximum deviation of the frequency in the angle modulated signal from that of the carrier is ___________ kHz.
A phase modulated signal can be obtained from frequency modulator by passing the modulating signal through a
In phase modulated signal, the frequency deviation is proportional to
A message signal m(t) = A_{m} sin (2πf_{m}t) is used to modulate the phase of a carrier A_{c} cos (2πf_{c}t) to get the modulated signal y(t) = A_{c} cos (2πf_{c}t + m(t)). The bandwidth of y(t)
The baseband signal m(t) shown in the figure is phasemodulated to generate the PM signal φ(t) = cos(2πf_{c}t + km(t)). The time t on the xaxis in the figure is in milliseconds. If the carrier frequency f_{c} = 50 kHz and k = 10π, then the ratio of the minimum instantaneous frequency (in kHz) to the maximum instantaneous frequency (in kHz) is __________ (rounded off to 2 decimal places).
21 docs263 tests

21 docs263 tests
