Types of Antenna – 1 MCQ’s

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This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Types of Antenna – 1″.

1. The impedance at the center of the antenna is known as?
a) Characteristic impedance
b) Radiation resistance
c) Transmission impedance
d) Recovery resistance

2. What happens when the radiation resistance of the antenna matches the characteristic impedance of the transmission line?
a) No transmission occurs
b) No reception occurs
c) SWR is maximum
d) SWR is minimum

3. A dipole antenna is also called as?
a) Marconi antenna
b) Yagi antenna
c) Bidirectional antenna
d) Hertz antenna

4. The type of dipole antenna that has a higher band width is called as?
a) Conical antenna
b) Yagi antenna
c) Helical antenna
d) Marconi antenna

5. What is the beam width for a half wave dipole antenna?
a) 90°
b) 180°
c) 50°
d) 250°

6. What is the power radiated by the antenna with gain called as?
a) Critical power
b) Transverse power
c) Effective radiated power
d) Transmitted power

7. The radiation pattern of a half-wave dipole has the shape of a ______
a) Doughnut
b) Sphere
c) Hemisphere
d) Circular

8. What does the beam width of an antenna tell us?
a) Signal strength
b) Signal power
c) Directivity
d) Degradation

9. What is the radiation pattern of an isotropic radiator?
a) Doughnut
b) Sphere
c) Hemisphere
d) Circular

10. Which of the following antennas produce a vertical radiation pattern?
a) Dipole antenna
b) Yagi antenna
c) Marconi antenna
d) Hertz antenna

11. What is the impedance of the folded dipole antenna?
a) 50Ω
b) 100Ω
c) 300Ω
d) 20Ω

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