Electromagnetics-Antennas [GATE (Graduate Aptitude Test in Engineering) Electronics & CE (EC)]: Questions 6 - 9 of 24
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Question 6
Appeared in Year: 2013
Question MCQ▾
VSWR (Voltage Standing Wave Ratio) is always (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | 1 | |
b. | More than 1 | |
c. | 0.4 | |
d. | Less than 1 |
Question 7
Appeared in Year: 2013
Question MCQ▾
Which antenna gets circularly polarized? (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | Helical | |
b. | Yagi-Uda | |
c. | Parabolic | |
d. | Dipole |
Question 8
Appeared in Year: 2013
Question MCQ▾
Consider the following statements regarding a semiconductor:
1. Acceptor level lies close to the valence band.
2. Donor level close to the valence band.
3. n-type semiconductor behaves as a conductor at zero Kelvin.
4. p-type semiconductor behaves as a insulator at zero Kelvin.
Choices
Choice (4) | Response | |
---|---|---|
a. | 2 & 3 are correct. | |
b. | 1 & 3 are correct. | |
c. | 1 & 4 are correct. | |
d. | 3 & 4 are correct. |
Question 9
Appeared in Year: 2013
Question Match List-Ⅰ List-Ⅱ▾
Match the following lists: (September)
List-Ⅰ (Column I) | List-Ⅱ (Column II) |
---|---|
(A) Parabolic reflector antenna | (i) Directional transmission |
(B) Cassegrain antenna | (ii) Radar |
(C) Yagi antenna | (iii) Direction finding |
(D) Loop antenna | (iv) Large B. W. |
Choices
Choice (4) | Response | |
---|---|---|
| ||
a. |
| |
b. |
| |
c. |
| |
d. |
|