Antennas Mock Test 8

10%

Question 1 of 10

1. Normal mode of radiation is limited in use because _____

it has broad bandwidth and dependency on large dimensions of the antenna compared to wavelength

it has broad bandwidth and independent of antenna dimensions

it has narrow bandwidth and dependency on small dimensions of the antenna compared to wavelength

it has narrow bandwidth and is independent of antenna dimensions

Question 1 of 10

Question 2 of 10

2. The dipoles in the inactive transmission region offer ________ impedance.

Characteristic

Resistive

Capacitive

Inductive

Question 2 of 10

Question 3 of 10

3. Antenna efficiency of a lossless isotropic antenna is dB is ____

-3

Question 3 of 10

Question 4 of 10

4. Which of the following modes of radiation, the radiation of helical antenna is along the end-fire direction?

Axial mode

Perpendicular mode

Normal mode

Beam mode and Normal mode

Question 4 of 10

Question 5 of 10

5. In which of the following region in LPDA, the current leads the base voltage?

Active region

Inactive transmission line region

Inactive stop region

Reflective region

Question 5 of 10

Question 6 of 10

6. Which of the following antenna ranges are used to avoid limitations due to electromagnetic interference?

Slant height

Anechoic Chambers

Reflection range

Outdoor ranges

Question 6 of 10

Question 7 of 10

7. In which of the following mode, there are no minor lobes at oblique angles in radiation pattern?

Normal mode

Beam mode

Axial mode

Conical mode

Question 7 of 10

Question 8 of 10

8. Antenna range refers to the measurement of antenna parameters.

False

True

Question 8 of 10

Question 9 of 10

9. The dipoles in the active region offer ________ impedance.

Capacitive

Resistive

Characteristic

Inductive

Question 9 of 10

Question 10 of 10

10. For a helical antenna radiation, the pitch angleα should be _____

α=0 or 90

α=0

0 < α < 90

α=90

Question 10 of 10