Antennas Mock Test 4

10%

Question 1 of 10

1. Find the length of the E-plane horn with aperture 12λ and path travel difference 0.4λ?

9 λ

3.5 λ

54 λ

45 λ

Question 1 of 10

Question 2 of 10

2. If the flare angle of the horn increases, then its beam width ______

Increases

Depends on aperture of horn

Independent of flare angle

Decreases

Question 2 of 10

Question 3 of 10

3. Find the HPBW of the uniform rectangular aperture antenna with 4λ×2λ in the E-plane?

0.5

0.886

0.25

0.443

Question 3 of 10

Question 4 of 10

4. In a horn antenna, with increase in aperture, the directivity is ____ and diffraction is ______

increased, increased

increased, decreased

decreased, increased

decreased, decreased

Question 4 of 10

Question 5 of 10

5. What is the physical area of the rectangular horn antenna with E-plane aperture 5 λ and H-plane aperture 4 λ?

20λ²

9 λ

0.8

10λ²

Question 5 of 10

Question 6 of 10

6. If the all the walls of rectangular waveguide are flared out, then it is called ______

Conical horn

H-plane horn

E-plane horn

Pyramidal horn

Question 6 of 10

Question 7 of 10

7. Find the BWFN of a paraboloid with a circular aperture of diameter 10λ?

41 degrees

28 degrees

14 degrees

11.5 degrees

Question 7 of 10

Question 8 of 10

8. Which of the following doesn’t apt for flaring?

Improve Gain

Decreases side lobes

Impedance matching

Improve Standing waves

Question 8 of 10

Question 9 of 10

9. In a corner reflector, included angle α refers to _______

angle between vertex and the main beam axis

angle between major axis to the main beam

angle at which two plane reflectors are joined

angle between vertex and the feed radiator

Question 9 of 10

Question 10 of 10

10. The number of images, polarity and position in the analysis of the radiation field of corner reflector depends on what?

Neither included angle nor Polarization of feed element

Only included angle

Polarization of feed element

Both included angle & Polarization of feed element

Question 10 of 10