This chapter is currently out of syllabus
1
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
2
JEE Main 2022 (Online) 25th July Evening Shift
+4
-1
Out of Syllabus

In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitudes are found to be 6 V and 2 V respectively. The modulation index is :

A
100%
B
80%
C
60%
D
50%
3
JEE Main 2022 (Online) 30th June Morning Shift
+4
-1
Out of Syllabus

A speech signal given by 11 sin(2200 $$\pi$$t) V is used for amplitude modulation with a carrier signal given by 44 sin(6600 $$\pi$$t) V. The minimum amplitude of modulated wave will be :

A
33 V
B
55 V
C
8.25 V
D
13.75 V
4
JEE Main 2022 (Online) 29th June Evening Shift
+4
-1
Out of Syllabus

The TV transmission tower at a particular station has a height of 125 m. For doubling the coverage of its range, the height of the tower should be increased by

A
125 m
B
250 m
C
375 m
D
500 m
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