Vayudoot Aviation

1. The ideal length for a Marconi aerial for a frequency of 406 MHz is

17.5 cm

35.1 cm

36.9 cm

18.5 cm

2. The ideal length of a half wave dipole for a frequency of 75 MHz is

3.8 m

1.9 m

95 cm

47.5 cm

3. A disadvantage of directivity is

phase distortion

sidelobes

ambiguity

reduced range

4. Which of the following is not an advantage of a slotted antenna (phase array)?

improved resolution

reduced power

reduced sidelobes

directivity

Question Bank