Avionics Mock Test 5

10%

Question 1 of 10

1. What is used as a surrounding for the solid center core in a coaxial cable?

Metal

Wood

Plastic dielectric

Ceramic

Question 1 of 10

Question 2 of 10

2. What is used between the two lead wires of a parallel transmission line?

Ceramic

Plastic

Wood

Metal

Question 2 of 10

Question 3 of 10

3. Which of the following does not cause standing waves?

High frequency high power signal

Short circuit

Open circuit

Impedance is not matched

Question 3 of 10

Question 4 of 10

4. A current carrying conductor is only called a transmission line if the length of the line is _____ long at the signal frequency?

0.1λ

0.3λ

1.2λ

1.5λ

Question 4 of 10

Question 5 of 10

5. What is the load on a transmission line?

0 Ω

Some value between0 and 1

Infinity

Some value between 0 and infinity

Question 5 of 10

Question 6 of 10

6. Two parallel lines appear as a complex impedance when the transmission line is equal to the wavelength of the signal.

True

False

Question 6 of 10

Question 7 of 10

7. In which of the following systems multiplexing is not necessary?

TV broadcasting

Telemetry

Satellites

Continuous wave transmission

Question 7 of 10

Question 8 of 10

8. How would the graph of wavelength vs voltage look like if the transmission line is matched (neglect resistive loss)?

Constant

Linearly decreasing

Linearly increasing

Exponentially decreasing

Question 8 of 10

Question 9 of 10

9. In an unmatched line the actual signal on the line is ___________

The modulus of forward signal

The product of forward and reflected signals

The sum of forward and reflected signals

The difference of forward and reflected signals

Question 9 of 10

Question 10 of 10

10. For frequency division multiplexing who defines the channel bandwidth?

FAA

ARNIC

CCA

FCC

Question 10 of 10