WorksheetsDTC5088 Online Quiz 3
Total questions: 5
Worksheet time: 3mins
The correct definition of modulation is
process to mix two signal together before transmission.
process of putting information to the channel for transmission.
process of putting information onto a high frequency carrier for transmission.
process to add one signal to another signal after transmission
Choose correct answer to be put inside the box
incoming signal
modulating signal
sinusoidal signal
power signal
An Am broadcast station peak carrier voltage of 10V with frequency 1000kHz has been amplitude modulated to an index of 85% with a 3500Hz test tone. If it is modulated by DSB-SC. Calculate fusb
1350kHz
4500kHz
1003500Hz
103.5kHz
Readings from a spectrum analyzer shows an FM signal modulated by a sinusoidal signal with a frequency, fm of 10kHz. Given that a carrier frequency of 200kHz with a peak carrier amplitude of 5V and a frequency deviation of 5kHz.Calculate the bandwidth with limitation for this signal.
30Hz
40Hz
20Hz
10Hz
In amplitude modulation, modulation index is one of the important parameter to be observed for. Which one of the condition represent overmodulation?
m=1
m>1
m<1
m=0
