img
Question:
Published on: 3 December, 2024

An AM transmitter has an un-modulated carrier power of 10 kW. It can be modulated by a sinusoidal modulating voltage to a maximum depth of 40%, without overload. If the maximum modulation index is reduced to 30%, what is the extent up to which the modulated carrier power can be increased without overloading?

Answer:

Given that Pc = 10kW

Modulation index µ = 0.4

Total transmitted power

Now the effective modulation index

The total radiated power

Hence Pt = 11.25kW

Hence modulated carrier power is increased by amount of 11.25 - 10.08 = 1.17kW

Subjects
Basic Electrical Engineering Radio Frequency and Microwave Engineering Electrical Engineering Management Analog Communication Power Electronics
Trending

For a broadcast super heterodyne AM receiver having no RF amplifier, the loaded quality factor Q of the antenna coupling circuit is 100. Now if the intermediate frequency is 455 KHz, then determine the image frequency and its rejection ratio at an incoming frequency of 1 MHz.
View : 744
3 December, 2024

Apply Shannon – Fano algorithm to the source with M = 8 emitting message A, B, C, D, E, F, G, H having probability P(A) = 1/2, P(B) = P(C) = 1/8, P(D) = P(E) = P(F) = 1/16, P(G) = P(H) = 1/32, calculate entropy, average code length and efficiency of coding.
View : 740
3 December, 2024

Derive the expression for overall noise figure of a cascaded system.
View : 707
3 December, 2024

An AM transmitter has an un-modulated carrier power of 10 kW. It can be modulated by a sinusoidal modulating voltage to a maximum depth of 40%, without overload. If the maximum modulation index is reduced to 30%, what is the extent up to which the modulated carrier power can be increased without overloading?
View : 681
3 December, 2024

Write a short note on TDM (Time Division Multiplexing).
View : 798
3 December, 2024
Random questions
About
MindStudy is a preparation hub for all the students. The goal is to make it easier for pupils to get better grades on exams. We have a list of questions with the best answer for each. Professors, Teachers, and Faculty members from a variety of universities, schools, and institutions throughout the world prepare the Q&A.
Contacts
Shunya Intelliware Solution
Kolkata, WB
Mail us at: info@mindstudy.in

Follow us on:
Streams
Top Subjects
Data Structures & Algorithm Database Management System Software Engineering Compiler Design Mobile computing Design and Analysis of Algorithm C Programming and Practices Computer Graphics and Multimedia Basic Electrical Engineering Radio Frequency and Microwave Engineering Analog Communication Electrical Engineering Management Concrete Technology Design of Reinforced Concrete Structures Power Electronics Irrigation Engineering surveying
MindStudy © Copyright 2022, All rights reserved.
Home About Contact