82) The three elements of a generalized communication system are

Transmitter, transmission channel and detector

Transmitter, multiplexer and receiver

Transmitter, noise generator and receiver

Transmitter, transmission channel and receiver

Answer is:

Transmitter, transmission channel and receiver

Explanation:

Transmitter, transmission channel and receiver are three generalised element of communication system

if the temperature is high

if the humidity is high

if smell or touch is to be transmitted

message or information is not available in the form of electrical signals

Answer is:

Explanation:

Electronic communication is not possible if message or information is not available in the form of electrical signals

Telephony

AM Radio

FM Radio

Answer is:

Explanation:

Telephony is point to point communication

mobile

radio

FAX

telephony

Answer is:

Explanation:

radio is broadcast communication

converts low power to high power

converts electrical signals to non electrical signals

converts non electrical signals to electrical signals

converts high power to low power

Answer is:

Explanation:

a device that converts variations in a physical quantity, such as pressure or brightness, into an electrical signal, or vice versa.