Avionics Mock Test 6

10%

Question 1 of 10

1. Why does the orbit take the shape of an ellipse or circle?

Better coverage on earth

Most efficient geometry

Position can be easily determined

Consume less fuel

Question 1 of 10

Question 2 of 10

2. Which of the following is not true?

A transmission line must not radiate energy

A conductor carrying alternating current radiates

A parallel wire transmission, when left open, does not radiate

Antennas are transmission lines which are made to radiate energy

Question 2 of 10

Question 3 of 10

3. What is the point on the surface of the earth that is directly below the satellite called?

Supersatellite point

Satellite point

Overhead point

Subsatellite point

Question 3 of 10

Question 4 of 10

4. Why is it not possible to provide transmit function by wideband amplifier and mixer circuits?

Weight of the system increases five fold

Heavy attenuation

High power output over wideband is not possible

Economically not profitable

Question 4 of 10

Question 5 of 10

5. What does the beam width of an antenna tell us?

Signal strength

Signal power

Directivity

Degradation

Question 5 of 10

Question 6 of 10

6. All EM waves propagate at the speed of light irrespective of medium.

False

True

Question 6 of 10

Question 7 of 10

7. The Far field is also known as ______________

Marconi zone

Fresnel zone

Fraunhofer zone

Maxwell zone

Question 7 of 10

Question 8 of 10

8. What happens when a vertical or horizontal polarized antenna receives a circular polarized wave?

Signal strength reduces

Signal strength increases

Gain increases

Cannot receive circular polarized waves

Question 8 of 10

Question 9 of 10

9. What is the number of transponders if the satellite uses 12 channels of frequency and frequency reuse is implemented?

Question 9 of 10

Question 10 of 10

10. The satellite is accelerating as it orbits the earth.

False

True

Question 10 of 10