engineering recuitment GATE ECE 2023-24 Test Series Communication Systems Angle Modulation Frequency Modulation
Consider the angle modulated signal s(t) = 10 cos [200 πt + πt2]
Which of the following statements are correct (fi is the instantaneous frequency)?1
fi = (10 + t2) Hz
2
fi = (100 + t) Hz
3
‘fi’ increases at the rate of 10 Hz / sec
4
‘fi’ increases at the rate of 1 Hz / sec