$1-$ The pre emphasis filter is used after FM modulator. Select one:

True

False

$2-$ The problem in TDM is the busy slots. Select one:

True

False

$3-$ In FDM$,$ each signal is shifted by a different carrier.. Select one:

True

False

$4-$ FSK can be considered as sum of two ASK signals.. Select one:

True

False

$5-$ In FDM$,$ the modulated signals can all have the same frequency range. Select one:

True

False