# Power Radiation From Half Wave Dipole MCQ’s

This set of Antenna Multiple Choice Questions & Answers (MCQs) focuses on “Power Radiation From Half Wave Dipole”.

1. The average radiated power of half-wave dipole is given by ______
a) 73I_{rms}^2
b) 36.5I_{rms}^2
c) 13.25I_{rms}^2
d) 146I_{rms}^2

2. If the power radiated by a quarter-wave monopole is 100mW then power radiated by a half wave dipole under same current input is _____
a) 100W
b) 100mW
c) 200W
d) 200mW

3. If the current input to the antenna is 100mA, then find the average power radiated from the half-wave dipole antenna?
a) 365mW
b) 0.356mW
c) 0.365mW
d) 356mW

4. Power radiated by a half wave dipole is how many times the power radiated by a quarter wave monopole under same input current to antennas?
a) 2
b) 3
c) 4
d) 1

5. In which of the following the power is radiated through a complete spherical surface?
a) Half-wave dipole
b) Quarter-wave Monopole
c) Both Half-wave dipole & Quarter-wave Monopole
d) Neither Half-wave dipole nor Quarter-wave Monopole

6. For the same current, the power radiated by half-wave dipole is four times that of the radiation by quarter wave monopole.
a) True
b) False

7. Find the magnetic field if the electric field radiated by the half-wave dipole is 60mV/m?
a) 159μA/m
b) 195μA/m
c) 159mA/m
d) 195mA/m

8. Find the power radiated from the half wave dipole at 2km away with magnetic field at point \theta=\frac{\pi}{2} is 10μA/m ?
a) 0.576mW
b) 0.576W
c) 0.756W
d) 0.675W

9. If the power radiated by a half wave dipole is 100mW then power radiated by a quarter wave monopole under same current input is _____
a) 50mW
b) 200mW
c) 100mW
d) 50W

10. If the power radiated by a quarter wave monopole is 100mW, then power radiated by a half wave dipole with doubled current is ______
a) 800mW
b) 400mW
c) 200mW
d) 100mW