Exam Questions Papers - Engineering

Q1:

A transmitted using AM has in modulated carrier output power of 10 KW and can be modulated to a maximum depth of 90% by a sinusoidal modulating voltage without causing overloading. Find the value to which an modulated carrier power can be increased without resulting in overloading if the maximum permitted modulating index is 40%

A 14 KW

B 12.96 KW

C 26.96 KW

D 2.96 KW

ANS:B - 12.96 KW

Now PT is fixed, μ = 0.4 Then PC is PC =