Radiation Pattern MCQ’s

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This set of Antenna Multiple Choice Questions & Answers (MCQs) focuses on “Radiation Pattern”.

1. The graphical representation of the radiation properties of the antenna as a function of space coordinates is called Radiation pattern.
a) True
b) False

2. What is the total power radiated in Watts for the power density wr=4sinθ3r2arW/m2?
a) 4π2
b) 8π2/3
c) 4π2/3
d) 2π2/3

3. Units of radiation intensity is _______
a) Watts/unit Solid angle
b) Watts/m2
c) Watts- m2
d) Watts

4. Which of the following pattern varies with square of magnitude of field?
a) Power Pattern
b) Electric Field Pattern
c) Current distribution
d) Array Factor

5. Fresnel zone is also called as ____
a) Near Field
b) Far Field
c) Electrostatic Field
d) Reactive Field

6. For a center fed short antenna, current distribution is _____ at center and ____ at ends.
a) Low, high
b) High, high
c) Low, low
d) High, low

7. The radiation lobe containing the direction of maximum radiation is called as _____
a) Major lobe
b) Minor lobe
c) Side lobe
d) Back lobe

8. If FNBW is 6°, then resolution is ____
a) 12°
b) 3°
c) 2°
d) 6°

9. Which pattern represents a plot with magnitude of field strength Vs θ at a constant φ?
a) E-plane pattern
b) H-plane pattern
c) Horizontal pattern
d) Power pattern

10. The region of the field that angular field distribution is independent of the distance from the antenna is called as _______
a) Reactive near-field
b) Radiating near-field
c) Fresnel zone
d) Far field

11. The portion of the near field immediate to the surrounding the antenna is called as _____
a) Reactive near-field
b) Radiating near-field
c) Fraunhofer zone
d) Far field

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