Antennas Mock Test 3

10%

Question 1 of 10

1. A Yagi-Uda antenna is ____

Both super directive and super gain

Only a super gain antenna

Neither super directive nor super gain

Only a super directive antenna

Question 1 of 10

Question 2 of 10

2. Type II Balun has two Type I balloons in series providing more bandwidth and load impedances at all frequencies.

False

True

Question 2 of 10

Question 3 of 10

3. Tilt angle of the elliptic polarization with respect to horizontal is ____________

τ=\((\frac{a_{vertical}}{a_{horizontal}})\)

τ=\(\frac{a_{horizontal}}{a_{vertical}}\)

τ=\(tan^{-1}(\frac{a_{vertical}}{a_{horizontal}})\)

τ=\(tan^{-1}(\frac{a_{horizontal}}{a_{vertical}})\)

Question 3 of 10

Question 4 of 10

4. Polarization loss factor describes the amount of power loss due to polarization mismatch at the receiving antenna from incident wave.

True

False

Question 4 of 10

Question 5 of 10

5. Which of the following antenna belongs to rectangular aperture?

Conical antenna

Parabolic antenna

Horn antenna

Helical antenna

Question 5 of 10

Question 6 of 10

6. The first-level of the side lobe occurs at ______ dB for a uniform rectangular aperture antenna.

8.5

-6.63

-13.26

Question 6 of 10

Question 7 of 10

7. A half wave folded dipole of 3 wires has the impedance _____Ω.

675

292

219

657

Question 7 of 10

Question 8 of 10

8. The transmission mode polarization vector and receiving mode polarization vector of antenna polarization are ___________

conjugate to each other

inverse of Conjugate of other vector

always equal

negative of conjugate of other

Question 8 of 10

Question 9 of 10

9. Which of the following Balun changes the shape of the unbalanced transmission line to that of a balanced transmission line?

Sleeve Balun

Folded Balun

Infinite Balun

Tapered Balun

Question 9 of 10

Question 10 of 10

10. Which of the following does not belong to the aperture antenna?

Waveguide antenna

Half-Dipole

Slot antenna

Horn Antenna

Question 10 of 10