Explore topic-wise MCQs in Antenna Parameters.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Antenna Parameters knowledge and support exam preparation. Choose a topic below to get started.

1.

For lower Quality factor antennas, the bandwidth is very high.

A. True
B. False
Answer» B. False
Discussion
2.

High the Fractional Bandwidth ___________ is the quality factor.

A. low
B. high
C. constant
D. infinity
Answer» B. high
Discussion
3.

In the impedance v/s frequency graph of antenna, the antenna impedance at frequencies less than resonant frequency is ____

A. inductive
B. capacitive
C. resistive
D. both inductive and capacitive
Answer» C. resistive
Discussion
4.

In an antenna, the lower frequency limit is determined by pattern, gain or impedance.

A. True
B. False
Answer» B. False
Discussion
5.

What is the quality factor of the antenna operating at 650MHz and having a bandwidth of 10MHZ?

A. 65
B. 0.65
C. 15
D. 55
Answer» B. 0.65
Discussion
6.

Quality factor is defined as ________

A. \(2π×\frac{energy \,radiated\, per\, cycle}{Total\, energy\, stored\, by\, antenna}\)
B. \(4π×\frac{Total \,energy \,stored \,by\, antenna}{energy\, radiated\, per \,cycle}\)
C. \(4π×\frac{energy \,radiated\, per \,cycle}{Total \,energy\, stored \,by \,antenna}\)
D. \(2π×\frac{Total \,energy\, stored\, by \,antenna}{energy\, radiated \,per \,cycle}\)
Answer» E.
Discussion
7.

What is the length of the half-wave dipole with bandwidth 20MHz and Quality factor 30?

A. 5m
B. 0.25m
C. 0.50m
D. 2.5m
Answer» C. 0.50m
Discussion
8.

What is the Bandwidth of the antenna operating at resonant frequency 200MHz with Quality factor 20?

A. 10Hz
B. 5MHz
C. 10MHz
D. 0.1MHz
Answer» D. 0.1MHz
Discussion
9.

Relation between Quality factor, Bandwidth, and resonant frequency is _________

A. \(Q=\frac{BW}{f_0}\)
B. \(Q=\frac{f_0}{BW}\)
C. Q = BW×f0
D. \(Q=\frac{BW+f_0}{BW-f_0}\)
Answer» C. Q = BW×f0
Discussion