# Design of LPDA MCQ’s

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

1. The value of periodicity factor in LPDA is _____
a) < 1
b) >1
c) ≥1
d) =0

2. The longest and shortest dipole lengths are taken in the form of the wavelength of the operating frequencies in LPDA.
a) True
b) False

3. What is the ratio of maximum frequency to minimum frequency if the scaling factor is 0.5 for 5 elements LPDA?
a) 16
b) 2
c) 4
d) 8

4. The relation between the spacing factor σ and the scaling factor τ is given by ____
a) σ=tan^{-1}(\frac{1-τ}{4σ})
b) σ=tan^{-1}(\frac{1-τ}{2σ})
c) σ=tan^{-1}⁡(\frac{4σ}{1-τ})
d) σ=tan^{-1}⁡(\frac{2σ}{1-τ})

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