Antenna MCQs

a) An active antenna requires external power to operate, while a passive antenna does not.
b) An active antenna is more expensive than a passive antenna.
c) An active antenna has a higher gain than a passive antenna.
d) An active antenna has a lower bandwidth than a passive antenna.
Answer: a) An active antenna requires external power to operate, while a passive antenna does not.

a) To transmit and receive electromagnetic waves
b) To amplify electromagnetic waves
c) To filter electromagnetic waves
d) To convert electromagnetic waves into electrical energy
Answer: a) To transmit and receive electromagnetic waves

a) An omnidirectional antenna radiates signals in all directions, while a directional antenna focuses signals in a specific direction.
b) An omnidirectional antenna is smaller than a directional antenna.
c) An omnidirectional antenna has a lower gain than a directional antenna.
d) An omnidirectional antenna is more expensive than a directional antenna.
Answer: a) An omnidirectional antenna radiates signals in all directions, while a directional antenna focuses signals in a specific direction.

a) Antenna length
b) Antenna diameter
c) Antenna shape
d) All of the above
Answer: d) All of the above

a) Yagi
b) Patch
c) Log-periodic
d) Horn
Answer: b) Patch

a) Increased directivity
b) Increased bandwidth
c) Increased efficiency
d) Increased polarization diversity
Answer: a) Increased directivity

a) Directivity gain
b) Radiation efficiency gain
c) Receiver gain
d) Amplifier gain
Answer: d) Amplifier gain

a) Dipole
b) Loop
c) Horn
d) Monopole
Answer: a) Dipole

a) Dipole
b) Loop
c) Horn
d) Monopole
Answer: c) Horn

a) Antenna height
b) Antenna length
c) Antenna diameter
d) Antenna shape
Answer: d) Antenna shape