This chapter is currently out of syllabus
1
JEE Main 2022 (Online) 27th July Evening Shift
+4
-1
Out of Syllabus

A square wave of the modulating signal is shown in the figure. The carrier wave is given by $$C(t)=5 \sin (8 \pi t)$$ Volt. The modulation index is :

A
0.2
B
0.1
C
0.3
D
0.4
2
JEE Main 2022 (Online) 27th July Morning Shift
+4
-1
Out of Syllabus

At a particular station, the TV transmission tower has a height of 100 m. To triple its coverage range, height of the tower should be increased to

A
200 m
B
300 m
C
600 m
D
900 m
3
JEE Main 2022 (Online) 26th July Evening Shift
+4
-1
Out of Syllabus

The maximum and minimum voltage of an amplitude modulated signal are $$60 \mathrm{~V}$$ and $$20 \mathrm{~V}$$ respectively. The percentage modulation index will be :

A
0.5%
B
50%
C
2%
D
30%
4
JEE Main 2022 (Online) 26th July Morning Shift
+4
-1
Out of Syllabus

A radio can tune to any station in $$6 \,\mathrm{MHz}$$ to $$10 \,\mathrm{MHz}$$ band. The value of corresponding wavelength bandwidth will be :

A
4 m
B
20 m
C
30 m
D
50 m
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