1. What is the average noise power of a device operating at a temperature of 90 ° F with a bandwidth of 30 KHz? 2. The signal voltage at the input of an amplifier is 100µV and the noise voltage is 2µV. What is the signal to noise ratio in decibels? 3. Calculate the maximum line of sight distance between a paging antenna 250ft high and a pager receiver 3.5ft off the ground? 4. To achieve 75 percent modulation of a carrier of Ec=50 V, what amplitude of the modulating signal is needed? 5. An AM transmitter has a carrier power of 30 W. The percentage of modulation is85 percent. Calculate (a) the total power and (b) the power in one sideband.

1. What is the average noise power of a device operating at a temperature of 90 ° F with a bandwidth of 30 KHz? 2. The signal voltage at the input of an amplifier is 100µV and the noise voltage is 2µV. What is the signal to noise ratio in decibels? 3. Calculate the maximum line of sight distance between a paging antenna 250ft high and a pager receiver 3.5ft off the ground? 4. To achieve 75 percent modulation of a carrier of Ec=50 V, what amplitude of the modulating signal is needed? 5. An AM transmitter has a carrier power of 30 W. The percentage of modulation is85 percent. Calculate (a) the total power and (b) the power in one sideband.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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