Explore topic-wise MCQs in Antennas.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Antennas knowledge and support exam preparation. Choose a topic below to get started.

1.

Polarization loss factor in dB when two linear polarized antennas are rotated by an angle 45° is ___

A. 3dB
B. -3dB
C. 0.5dB
D. -0.5dB
Answer» C. 0.5dB
Discussion
2.

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

A. True
B. False
Answer» B. False
Discussion
3.

Which of the following holds true for complete polarization mismatch?

A. PLF=1
B. PLF=0
C. PLF=0.5
D. PLF=0.75
Answer» C. PLF=0.5
Discussion
4.

Which of the following limit is correct for the polarization loss factor?

A. 0≤PLF≤1
B. -1≤PLF≤1
C. -1≤PLF≤0
D. 0≤PLF≤∞
Answer» B. -1≤PLF≤1
Discussion
5.

Which of the following is the condition for no power loss?

A. PLF=1
B. PLF=0
C. PLF=0.5
D. PLF=0.75
Answer» B. PLF=0
Discussion
6.

The polarization of received antenna is not same as incident wave polarization is termed as ___

A. polarization mismatch
B. polarization loss factor
C. directivity
D. transmitter
Answer» B. polarization loss factor
Discussion
7.

Which of the following is best described by the polarization loss factor?

A. Power loss due to mismatch
B. Height of antenna
C. Directivity
D. Power gain
Answer» B. Height of antenna
Discussion
8.

What is the polarization loss factor when two antennas are rotated by an angle 30°?

A. 0.75
B. 0.25
C. 1
D. 0
Answer» B. 0.25
Discussion
9.

What is the polarization loss factor when a linear polarized antenna receives a circular polarized?

A. 0.5
B. 1
C. 0
D. 2
Answer» B. 1
Discussion
10.

What is the polarization loss factor due to mismatch if the two linear polarized antennas are rotated by an angle ∅?

A. tan⁡∅
B. cos⁡∅
C. cos2∅
D. cos-1⁡∅
Answer» D. cos-1⁡∅
Discussion