An amplitude modulated wave is represented by the expression v m =5(1+0.6 cos 6280 t ) sin (211 × 104 t ) volts. The minimum and maximum amplitudes of the amplitude modulated wave are, respectively :

Question

An amplitude modulated wave is represented by the expression v m =5(1+0.6 cos 6280 t ) sin (211 × 104 t ) volts. The minimum and maximum amplitudes of the amplitude modulated wave are, respectively : (A) 2 V , 8 V (B) (3/2) V , 5 V (C) (5/2) V , 8 V (D) 3 V , 5 V

Tardigrade Admin · Accepted Answer

V m =5(1+0.6 cos 6280 t ) sin (211 × 104 t ) V m =[5+3 cos 6820 t ] sin (211 × 104 t ) V max =5+3=8 V text min. =5-3=2

Q. An amplitude modulated wave is represented by the expression $v_{m} = 5 (1 + 0.6 cos 6280 t)$ $sin (211 \times 1 0^{4} t)$ volts. The minimum and maximum amplitudes of the amplitude modulated wave are, respectively :

$2 V, 8 V$

$\frac{3}{2} V, 5 V$

$\frac{5}{2} V, 8 V$

$3 V, 5 V$

$V_{m} = 5 (1 + 0.6 cos 6280 t) sin (211 \times 1 0^{4} t)$
$V_{m} = [5 + 3 cos 6820 t] sin (211 \times 1 0^{4} t)$
$V_{m a x} = 5 + 3 = 8$
$V_{min.} = 5 - 3 = 2$

Q. An amplitude modulated wave is represented by the expression vm​=5(1+0.6cos6280t) sin(211×104t) volts. The minimum and maximum amplitudes of the amplitude modulated wave are, respectively :

2V,8V

23​V,5V

25​V,8V

3V,5V