Vayudoot Aviation

1. A disadvantage of directivity is

reduced range

ambiguity

phase distortion

sidelobes

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

directivity

improved resolution

reduced power

reduced sidelobes

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

35.1 cm

18.5 cm

36.9 cm

17.5 cm

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

3.8 m

47.5 cm

95 cm

1.9 m

Question Bank