Answers of E.C.E - 3 Questions

1. Rhombic Antenna

2. Smaller the beam-width angle, higher the directivity.

3. There are more than one driven elements in a driven array.

4. The effective length of a antenna is always greater than it's physical length.

5. Earthmat is used to ensure: -

7. The induced voltage will experience 2 maxima and 2 null.

8. as a UHF receiving antenna.

9. 2

10. We use counterpoise to reduce: -

12. Input impedance of folded dipole antenna is 280 ohms.

13. Unipolar antenna is best for low frequency transmission.

14.An antenna behave as a resonant circuit, when it's length is a integral multiple of ʎ/2

15. An half wave dipole produce Broadside pattern.

16. The range will increase by the factor of 2

17. 1/2r

18. Loop antenna is commonly used for direction finding.

19. A parabolic antenna is commonly used at 5000 MHz.

20. The radiation pattern of Parabolic antenna is highly directional.

Answer for E.C.E 3 Questions

E.C.E 1 Questions

E.C.E 2 Questions

1. Rhombic Antenna

2. Smaller the beam-width angle, higher the directivity.

3. There are more than one driven elements in a driven array.

4. The effective length of a antenna is always greater than it's physical length.

5. Earthmat is used to ensure: -

- Provision of earth from the antenna
- Improvement of radiation patteren
- impossibility of good ground connection

7. The induced voltage will experience 2 maxima and 2 null.

8. as a UHF receiving antenna.

9. 2

10. We use counterpoise to reduce: -

- Rockiness of ground connection
- Difficulty of a good ground connection
- Provision of earth from antenna.

12. Input impedance of folded dipole antenna is 280 ohms.

13. Unipolar antenna is best for low frequency transmission.

14.An antenna behave as a resonant circuit, when it's length is a integral multiple of ʎ/2

15. An half wave dipole produce Broadside pattern.

16. The range will increase by the factor of 2

^{1/2}^{}

18. Loop antenna is commonly used for direction finding.

19. A parabolic antenna is commonly used at 5000 MHz.

20. The radiation pattern of Parabolic antenna is highly directional.

Answer for E.C.E 3 Questions

E.C.E 1 Questions

E.C.E 2 Questions

## No comments:

## Post a Comment