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WorksheetsIntro to ACOM
Total questions: 10
Worksheet time: 8mins
FM stands for ________
Frequency Modulation
Frequency Modulator
Frequent Frequent Multiplier
Frequency Mixer
Why a sinusoidal signal is considered analog?
It moves in both positive and negative direction
It is positive for one half cycle
It is negative for one half cycle
It has infinite number of amplitudes in the range of values of the independent variable
The minimum height of antenna required for transmission in terms of Lambda is ________
3*lambda/2
lambda/4
2lambda
2*lambda/4
What do you understand by the term analog communication?
A method in which one of the properties of a carrier signal varies in proportion to an instantaneous value of modulation signal
A way for data and computer communication
A numerical coded communication
A suitable method for long distance communication
Medium which sends information from source to receiver is called ________
Transmitter
Transducer
Loudspeaker
Channel
Telephones send information through wires in form of ________
radio signals
electrical signal
electromagnetic waves
microwaves
Cell phones sent information in form of ________
microwaves
electrical signals
infrared Waves
radio waves
What is the role of channel in communication system?
acts as a medium to send message signals from transmitter to receiver
converts one form of signal to other
allows mixing of signals
helps to extract original signal from incoming signal
Modulation is done in ________
Receiver
Transducer
Between transmitter and radio receiver
Transmitter
What is the role of transmitter in communication system?
to decode a signal to be transmitted
to convert one form of energy into other
to detect and amplify information signal from the carrier
to produce radio waves to transmit data
