COMMUNICATION SYSTEMS QUIZ

Reduces the amplitude of signals

Eliminates any change in amplitude of received FM signals

Amplifiers low frequency signals

None of these

Amplitude of distant sidebands remains constant

Amplitude of distant sidebands decreases

Amplitude of distant sidebands increases

Amplitude of distant sidebands first increases, then decreases

Linear devices

Harmonic devices

Class C amplifiers

Non-linear devices

Large bandwidth is required

Noise is very high for high frequency

High modulating power is needed

High output power is needed

100 ohm

300 ohm

500 ohm

1000 ohm

Anticlockwise

Clockwise or anticlockwise depending on frequency of data stored

Clockwise

Mostly anticlockwise but some times clockwise

Upto 600 bps

Upto 250 bps

Upto 100 bps

Upto 400 bps

Non-linear devices

Linear devices

Class C amplifiers

Harmonic devices

100 kHz

88 MHz

108 MHz

150 kHz

Involves critical alignment of transmitting and receiving antenna

Is useful in discrimination between reception of adjacent beams

Is useful in reducing depolarization effect on received wave

None of these