Definitions

Question 1

Amplitude Modulations

Answer 1

• The carrier wave has a constant t frequency
• These variations ar ein synchrony with the displacement of the information signal
• The amplitude of the carrier wave are those variations

Question 2

Frequency Modulations

Answer 2

• The amplitude of the carrier wave is constant

- The frequency of the carrier wave is mad e to any in synchrony wit the displacement of the information signal

Question 3

Bandwidth

Answer 3

It is the range of frequencies occupied by the amplitude modulated waveform

Question 4

Sampling rate

Answer 4

In an analogue ti digital converter the analogue voltage is sampled at regular time intervals which is known as the sampling rate

The value of the sample voltage measured at each sampling time is converted into binary number that represent voltage value

Question 5

Geostationary Orbits

Answer 5

The satellite orbits the earth with a period of 24 hrs at a height of 3.4 * 10^4 with the same direction of rotation of the earth

Question 6

Polar satellites

Answer 6

Are satellites that have low orbits and pass over the poles with a period of 100min