1. λ
2. 2λ
3. 3λ
4. 5λ
5λ
1. Poor conductivity of soil
2. Rocky earth
3. High rise buildings in the vicinity
4. All of these
All of these
1. Maintaining the distance of λ/4 between the elements
2. Maintaining the distance of λ/2 between the elements
3. Installing an identical array behind the main array at distance λ/4 and exciting it by current leading in phase by 900
4. Installing an identical array behind the main array at distance λ/2 and exciting it by current leading in phase by 1200
Installing an identical array behind the main array at distance λ/4 and exciting it by current leading in phase by 900
1. K2 (s+3)/s+5
2. K2 (s+2)/s+3
3. K1 s/s+5
4. K1 s/s+2
K1 s/s+5
1. 1 and 1
2. 2 and 2
3. 2 and 1
4. 1 and 2
1 and 2
1. 1/2π
2. 1/π
3. 21/π
4. 0.75l
21/π
1. Biconical
2. Horn
3. Helical
4. Discone
Horn
1. Naural range
2. Alford loop
3. Two crossed Adcock antennas
4. Cross-point indicator
Cross-point indicator
1. 1 V/s
2. 2 V/s
3. -2 V/s
4. Zero
2 V/s
1. RC impedance
2. RL impedance
3. RC impedance and an RL admittance
4. RC admittance and an RL impedance
RC impedance and an RL admittance