Types of Antenna – 2 MCQ’s

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This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Types of Antenna – 2″.

1. Why is top hat added to antennas?
a) To increase capacitance
b) Increasing the antenna gain
c) Sideband suppression
d) Increasing the range of the antenna

2. In a parasitic array antenna, the conductors that are not connected to the transmission line is called as?
a) Driven element
b) Parasitic elements
c) Extra elements
d) Array elements

3. What is the use of loading coil?
a) Correcting resonance to a desired frequency
b) Increasing the antenna gain
c) Sideband suppression
d) Increasing the range of the antenna

4. In a parasitic array the elements are shorted if they are connected to a conducting beam.
a) True
b) False

5. Why is the boom of the yagi antenna connected to a metal mast and electrical ground?
a) Better signal directivity
b) Increased bandwidth
c) Lightning protection
d) To avoid short circuiting

6. What is the length of the shortest element in the yagi antenna?
a) One quarter the wavelength of the highest frequency
b) One quarter the wavelength of the lowest frequency
c) One half the wavelength of the highest frequency
d) One half the wavelength of the lowest frequency

7. Parasitic element that is typically about 5 percent longer than the half-wave dipole-driven element is called _______
a) Array element
b) Director element
c) Reflector element
d) Driven element

8. Which of the following is not one of the types of driven array antenna?
a) Rectilinear antenna
b) Broadside antenna
c) End fire antenna
d) log periodic antenna

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