Antenna MCQs

a) Patch
b) Helical
c) Slot
d) Patch array
Answer: b) Helical

a) To focus the electromagnetic waves onto the feed
b) To reflect the electromagnetic waves towards the receiver
c) To amplify the electromagnetic waves
d) To balance the voltage and current in the antenna
Answer: b) To reflect the electromagnetic waves towards the receiver

a) Dipole
b) Loop
c) Helical
d) Parabolic
Answer: d) Parabolic

a) Linear
b) Circular
c) Elliptical
d) Diagonal
Answer: d) Diagonal

a) Frequency of the signal
b) Antenna height
c) Terrain
d) Color of the antenna
Answer: d) Color of the antenna

a) A half-wave dipole is shorter than a quarter-wave monopole
b) A half-wave dipole is longer than a quarter-wave monopole
c) A half-wave dipole is a balanced antenna while a quarter-wave monopole is unbalanced
d) A half-wave dipole is a unidirectional antenna while a quarter-wave monopole is omnidirectional
Answer: c) A half-wave dipole is a balanced antenna while a quarter-wave monopole is unbalanced

a) To balance the voltage and current in the antenna
b) To amplify the received signals
c) To increase the bandwidth of the antenna
d) To decrease the impedance of the antenna
Answer: a) To balance the voltage and current in the antenna

a) High gain
b) Low efficiency
c) Low VSWR
d) Wide bandwidth
Answer: b) Low efficiency

a) Hertz
b) Decibels
c) Watts
d) Ohms
Answer: b) Decibels

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