1
MHT CET 2020 19th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

A carrier wave of peak voltage 16 V is used to transmit a signal. If the modulation index is $75 \%$, the peak voltage of the modulating signal is

A
18V
B
12V
C
6V
D
24V
2
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

In communication system, a repeater is used to extend the range to transmission. It is the combination of

A
IF stage and amplifier
B
rectifier and detector
C
receiver and transmitter
D
modulator and power amplifier
3
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In amplitude modulation, the amplitude of carrier wave is $A_c$ and that of the modulating signal is $A_m$. In practice, the ratio of $A_m$ to $A_c$ is kept less than or equal to one, to avoid

A
distortion
B
attenuation
C
fading
D
noise
4
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In frequency modulated wave

A
frequency varies with time
B
both frequency and amplitude vary with time
C
amplitude varies with time
D
both frequency and amplitude are constant
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