Q.1
The array factor ofisotropic elements of broadside array separated by a λ/4 is given by ____
  • a) sinc(cosθ)
  • b) cos(sinθ)
  • c) sin(sinθ)
  • d) sinc(2cosθ)
Q.2
The array factor of 8 – isotropic elements of broadside array separated by a λ/2 is given by ____
  • a) sinc(4cosθ)
  • b) sin(2πcosθ)
  • c) sinc(4πsinθ)
  • d) sin(2sinθ)
Q.3
What is the direction of first null of broadside 8-element isotropic antenna having a separation of λ/2?
  • a) 60°
  • b) 75.5°
  • c) 37.5°
  • d) 57.5°
Q.4
The direction of the first minor lobe of 8 element isotropic broadside array separated by λ/2 is ___
  • a) 41.4°
  • b) 76.6°
  • c) 67.7°
  • d) 90°
Q.5
An 8-isotropic element end-fire array separated by a λ/4 distance has first null occurring at ____
  • a) 60
  • b) 30
  • c) 90
  • d) 150
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