Antenna Terminology » Exercise – 1
1. A device that converts high frequency current into electromagnetic wave.
(a) Antenna
(b) Loudspeaker
(c) Microphone
(d) Transduce
2. Very low signal strength in antenna.
(a) minor lobes
(b) null
(c) antenna patterns
(d) major lobes
3. ………. is the measurement of a unilateral antenna properties of directivity.
(a) phase angle
(b) antenna gain
(c) beamwidth
(d) bandwidth
4. If the antenna increases 3.3 times how much does the radiated power increase ?
(a) 3.3 times
(b) 10.89 times
(c) 9.9 times
(d) 6.6 times
5. What determines antenna polarization ?
(a) the frequency of the radiated wave
(b) the direction of the radiated wave
(c) the direction of the magnetic field vector
(d) the direction of the electric field vector
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Antenna Terminology » Exercise - 110. If the radiated power increase 10.89 times, the antenna current increases by ………… ? (a) 3.3 times (b) 6.6 times (c) 1.82 times (d) 10.89 times- Antenna Terminology » Exercise - 14. If the antenna increases 3.3 times how much does the radiated power increase ? (a) 3.3 times (b) 10.89 times (c) 9.9 times (d) 6.6 times
- Antenna Terminology » Exercise - 18. …………. of an antenna is a measure of how the antenna concentrates its radiated power in a given direction. (a) efficiency (b) power (c) gain (d) polarization
- Antenna Terminology » Exercise - 15. What determines antenna polarization ? (a) the frequency of the radiated wave (b) the direction of the radiated wave (c) the direction of the magnetic field vector (d) the direction of the electric field vector
- Antenna Terminology » Exercise - 17. How will you increase the gain of an antenna ? (a) by adding several antennas in parallel (b) by focusing the radiated energy in one desired direction (c) by making antenna rods thicker (d) by making the antenna size larger