Q.1
Half-power Beamwidth is given by ____
  • a) 70λ/D
  • b) 70D/λ
  • c) 35λ/D
  • d) 35D/λ
Q.2
If the antenna dimension is two times the wavelength of the signal then the half power beam width will be _____
  • a) 35
  • b) 140
  • c) 70
  • d) 280
Q.3
For a circular aperture the FNBW is ______
  • a) 140λ/D
  • b) 70λ/D
  • c) 140D/λ
  • d) 70D/λ
Q.4
If the antenna dimension is two times the wavelength of the signal then the First null beam width will be _____
  • a) 35
  • b) 140
  • c) 70
  • d) 280
Q.5
For a rectangular aperture of a*b the first null in E-plane occur at _______
  • a) sin-1⁡(λ/b)
  • b) sec-1⁡(λ/b)
  • c) cos-1⁡(λ/a)
  • d) sin-1⁡(λ/a)
Q.6
The first null beam width in the E-plane of a rectangular aperture of a×b is given by _______________
  • a) 2sin-1⁡(λ/b)
  • b) sin-1⁡(λ/a)
  • c) 2sec-1⁡(λ/b)
  • d) 2cos-1⁡(λ/a)
Q.7
Larger the size of the aperture, the narrower is the Beam-widths.
  • a) True
  • b) False
Q.8
Half-power Beam width in E-plane for a rectangular aperture antenna of a×b is given by ____
  • a) 0.886λ/b
  • b) 0.443λ/b
  • c) 0.5λ/b
  • d) λ/b
Q.9
Find the HPBW of the uniform rectangular aperture antenna with 4λ×in the E-plane?
  • a) 0.443
  • b) 0.886
  • c) 0.25
  • d) 0.5
Q.10
The value at which the second null occurs in H-plane of rectangular aperture of a*b is given by ____
  • a) sin-1⁡(2λ/a)
  • b) sin-1⁡(λ/a)
  • c) sin-1⁡(a/2λ)
  • d) sin-1⁡(a/λ)
0 h : 0 m : 1 s